New and improved DICE core. Asymm keygen successful

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atul.jha
2021-01-08 09:14:07 +01:00
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/**
* \file psa/crypto_accel_driver.h
* \brief PSA cryptography accelerator driver module
*
* This header declares types and function signatures for cryptography
* drivers that access key material directly. This is meant for
* on-chip cryptography accelerators.
*
* This file is part of the PSA Crypto Driver Model, containing functions for
* driver developers to implement to enable hardware to be called in a
* standardized way by a PSA Cryptographic API implementation. The functions
* comprising the driver model, which driver authors implement, are not
* intended to be called by application developers.
*/
/*
* Copyright The Mbed TLS Contributors
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef PSA_CRYPTO_ACCEL_DRIVER_H
#define PSA_CRYPTO_ACCEL_DRIVER_H
#include "crypto_driver_common.h"
#ifdef __cplusplus
extern "C" {
#endif
/** \defgroup driver_digest Hardware-Accelerated Message Digests
*
* Generation and authentication of Message Digests (aka hashes) must be done
* in parts using the following sequence:
* - `psa_drv_hash_setup_t`
* - `psa_drv_hash_update_t`
* - `psa_drv_hash_update_t`
* - ...
* - `psa_drv_hash_finish_t`
*
* If a previously started Message Digest operation needs to be terminated
* before the `psa_drv_hash_finish_t` operation is complete, it should be aborted
* by the `psa_drv_hash_abort_t`. Failure to do so may result in allocated
* resources not being freed or in other undefined behavior.
*/
/**@{*/
/** \brief The hardware-specific hash context structure
*
* The contents of this structure are implementation dependent and are
* therefore not described here
*/
typedef struct psa_drv_hash_context_s psa_drv_hash_context_t;
/** \brief The function prototype for the start operation of a hash (message
* digest) operation
*
* Functions that implement this prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_hash_<ALGO>_setup
* ~~~~~~~~~~~~~
* Where `ALGO` is the name of the underlying hash function
*
* \param[in,out] p_context A structure that will contain the
* hardware-specific hash context
*
* \retval PSA_SUCCESS Success.
*/
typedef psa_status_t (*psa_drv_hash_setup_t)(psa_drv_hash_context_t *p_context);
/** \brief The function prototype for the update operation of a hash (message
* digest) operation
*
* Functions that implement this prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_hash_<ALGO>_update
* ~~~~~~~~~~~~~
* Where `ALGO` is the name of the underlying algorithm
*
* \param[in,out] p_context A hardware-specific structure for the
* previously-established hash operation to be
* continued
* \param[in] p_input A buffer containing the message to be appended
* to the hash operation
* \param[in] input_length The size in bytes of the input message buffer
*/
typedef psa_status_t (*psa_drv_hash_update_t)(psa_drv_hash_context_t *p_context,
const uint8_t *p_input,
size_t input_length);
/** \brief The function prototype for the finish operation of a hash (message
* digest) operation
*
* Functions that implement this prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_hash_<ALGO>_finish
* ~~~~~~~~~~~~~
* Where `ALGO` is the name of the underlying algorithm
*
* \param[in,out] p_context A hardware-specific structure for the
* previously started hash operation to be
* fiinished
* \param[out] p_output A buffer where the generated digest will be
* placed
* \param[in] output_size The size in bytes of the buffer that has been
* allocated for the `p_output` buffer
* \param[out] p_output_length The number of bytes placed in `p_output` after
* success
*
* \retval PSA_SUCCESS
* Success.
*/
typedef psa_status_t (*psa_drv_hash_finish_t)(psa_drv_hash_context_t *p_context,
uint8_t *p_output,
size_t output_size,
size_t *p_output_length);
/** \brief The function prototype for the abort operation of a hash (message
* digest) operation
*
* Functions that implement this prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_hash_<ALGO>_abort
* ~~~~~~~~~~~~~
* Where `ALGO` is the name of the underlying algorithm
*
* \param[in,out] p_context A hardware-specific structure for the previously
* started hash operation to be aborted
*/
typedef void (*psa_drv_hash_abort_t)(psa_drv_hash_context_t *p_context);
/**@}*/
/** \defgroup accel_mac Hardware-Accelerated Message Authentication Code
* Generation and authentication of Message Authentication Codes (MACs) using
* cryptographic accelerators can be done either as a single function call (via the
* `psa_drv_accel_mac_generate_t` or `psa_drv_accel_mac_verify_t`
* functions), or in parts using the following sequence:
* - `psa_drv_accel_mac_setup_t`
* - `psa_drv_accel_mac_update_t`
* - `psa_drv_accel_mac_update_t`
* - ...
* - `psa_drv_accel_mac_finish_t` or `psa_drv_accel_mac_finish_verify_t`
*
* If a previously started MAC operation needs to be terminated, it
* should be done so by the `psa_drv_accel_mac_abort_t`. Failure to do so may
* result in allocated resources not being freed or in other undefined
* behavior.
*
*/
/**@{*/
/** \brief The hardware-accelerator-specific MAC context structure
*
* The contents of this structure are implementation dependent and are
* therefore not described here.
*/
typedef struct psa_drv_accel_mac_context_s psa_drv_accel_mac_context_t;
/** \brief The function prototype for the setup operation of a
* hardware-accelerated MAC operation
*
* Functions that implement this prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_accel_mac_<ALGO>_<MAC_VARIANT>_setup
* ~~~~~~~~~~~~~
* Where `ALGO` is the name of the underlying primitive, and `MAC_VARIANT`
* is the specific variant of a MAC operation (such as HMAC or CMAC)
*
* \param[in,out] p_context A structure that will contain the
* hardware-specific MAC context
* \param[in] p_key A buffer containing the cleartext key material
* to be used in the operation
* \param[in] key_length The size in bytes of the key material
*
* \retval PSA_SUCCESS
* Success.
*/
typedef psa_status_t (*psa_drv_accel_mac_setup_t)(psa_drv_accel_mac_context_t *p_context,
const uint8_t *p_key,
size_t key_length);
/** \brief The function prototype for the update operation of a
* hardware-accelerated MAC operation
*
* Functions that implement this prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_accel_mac_<ALGO>_<MAC_VARIANT>_update
* ~~~~~~~~~~~~~
* Where `ALGO` is the name of the underlying algorithm, and `MAC_VARIANT`
* is the specific variant of a MAC operation (such as HMAC or CMAC)
*
* \param[in,out] p_context A hardware-specific structure for the
* previously-established MAC operation to be
* continued
* \param[in] p_input A buffer containing the message to be appended
* to the MAC operation
* \param[in] input_length The size in bytes of the input message buffer
*/
typedef psa_status_t (*psa_drv_accel_mac_update_t)(psa_drv_accel_mac_context_t *p_context,
const uint8_t *p_input,
size_t input_length);
/** \brief The function prototype for the finish operation of a
* hardware-accelerated MAC operation
*
* Functions that implement this prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_accel_mac_<ALGO>_<MAC_VARIANT>_finish
* ~~~~~~~~~~~~~
* Where `ALGO` is the name of the underlying algorithm, and `MAC_VARIANT` is
* the specific variant of a MAC operation (such as HMAC or CMAC)
*
* \param[in,out] p_context A hardware-specific structure for the
* previously started MAC operation to be
* finished
* \param[out] p_mac A buffer where the generated MAC will be placed
* \param[in] mac_length The size in bytes of the buffer that has been
* allocated for the `p_mac` buffer
*
* \retval PSA_SUCCESS
* Success.
*/
typedef psa_status_t (*psa_drv_accel_mac_finish_t)(psa_drv_accel_mac_context_t *p_context,
uint8_t *p_mac,
size_t mac_length);
/** \brief The function prototype for the finish and verify operation of a
* hardware-accelerated MAC operation
*
* Functions that implement this prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_accel_mac_<ALGO>_<MAC_VARIANT>_finish_verify
* ~~~~~~~~~~~~~
* Where `ALGO` is the name of the underlying algorithm, and `MAC_VARIANT` is
* the specific variant of a MAC operation (such as HMAC or CMAC)
*
* \param[in,out] p_context A hardware-specific structure for the
* previously started MAC operation to be
* verified and finished
* \param[in] p_mac A buffer containing the MAC that will be used
* for verification
* \param[in] mac_length The size in bytes of the data in the `p_mac`
* buffer
*
* \retval PSA_SUCCESS
* The operation completed successfully and the comparison matched
*/
typedef psa_status_t (*psa_drv_accel_mac_finish_verify_t)(psa_drv_accel_mac_context_t *p_context,
const uint8_t *p_mac,
size_t mac_length);
/** \brief The function prototype for the abort operation for a previously
* started hardware-accelerated MAC operation
*
* Functions that implement this prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_accel_mac_<ALGO>_<MAC_VARIANT>_abort
* ~~~~~~~~~~~~~
* Where `ALGO` is the name of the underlying algorithm, and `MAC_VARIANT` is
* the specific variant of a MAC operation (such as HMAC or CMAC)
*
* \param[in,out] p_context A hardware-specific structure for the
* previously started MAC operation to be
* aborted
*
*/
typedef psa_status_t (*psa_drv_accel_mac_abort_t)(psa_drv_accel_mac_context_t *p_context);
/** \brief The function prototype for the one-shot operation of a
* hardware-accelerated MAC operation
*
* Functions that implement this prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_accel_mac_<ALGO>_<MAC_VARIANT>
* ~~~~~~~~~~~~~
* Where `ALGO` is the name of the underlying algorithm, and `MAC_VARIANT` is
* the specific variant of a MAC operation (such as HMAC or CMAC)
*
* \param[in] p_input A buffer containing the data to be MACed
* \param[in] input_length The length in bytes of the `p_input` data
* \param[in] p_key A buffer containing the key material to be used
* for the MAC operation
* \param[in] key_length The length in bytes of the `p_key` data
* \param[in] alg The algorithm to be performed
* \param[out] p_mac The buffer where the resulting MAC will be placed
* upon success
* \param[in] mac_length The length in bytes of the `p_mac` buffer
*/
typedef psa_status_t (*psa_drv_accel_mac_t)(const uint8_t *p_input,
size_t input_length,
const uint8_t *p_key,
size_t key_length,
psa_algorithm_t alg,
uint8_t *p_mac,
size_t mac_length);
/** \brief The function prototype for the one-shot hardware-accelerated MAC
* Verify operation
*
* Functions that implement this prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_accel_mac_<ALGO>_<MAC_VARIANT>_verify
* ~~~~~~~~~~~~~
* Where `ALGO` is the name of the underlying algorithm, and `MAC_VARIANT` is
* the specific variant of a MAC operation (such as HMAC or CMAC)
*
* \param[in] p_input A buffer containing the data to be MACed
* \param[in] input_length The length in bytes of the `p_input` data
* \param[in] p_key A buffer containing the key material to be used
* for the MAC operation
* \param[in] key_length The length in bytes of the `p_key` data
* \param[in] alg The algorithm to be performed
* \param[in] p_mac The MAC data to be compared
* \param[in] mac_length The length in bytes of the `p_mac` buffer
*
* \retval PSA_SUCCESS
* The operation completed successfully and the comparison matched
*/
typedef psa_status_t (*psa_drv_accel_mac_verify_t)(const uint8_t *p_input,
size_t input_length,
const uint8_t *p_key,
size_t key_length,
psa_algorithm_t alg,
const uint8_t *p_mac,
size_t mac_length);
/**@}*/
/** \defgroup accel_cipher Hardware-Accelerated Block Ciphers
* Encryption and Decryption using hardware-acceleration in block modes other
* than ECB must be done in multiple parts, using the following flow:
* - `psa_drv_accel_ciphersetup_t`
* - `psa_drv_accel_cipher_set_iv_t` (optional depending upon block mode)
* - `psa_drv_accel_cipher_update_t`
* - `psa_drv_accel_cipher_update_t`
* - ...
* - `psa_drv_accel_cipher_finish_t`
*
* If a previously started hardware-accelerated Cipher operation needs to be
* terminated, it should be done so by the `psa_drv_accel_cipher_abort_t`.
* Failure to do so may result in allocated resources not being freed or in
* other undefined behavior.
*/
/**@{*/
/** \brief The hardware-accelerator-specific cipher context structure
*
* The contents of this structure are implementation dependent and are
* therefore not described here.
*/
typedef struct psa_drv_accel_cipher_context_s psa_drv_accel_cipher_context_t;
/** \brief The function prototype for the setup operation of
* hardware-accelerated block cipher operations.
* Functions that implement this prototype should be named in the following
* conventions:
* ~~~~~~~~~~~~~{.c}
* psa_drv_accel_cipher_setup_<CIPHER_NAME>_<MODE>
* ~~~~~~~~~~~~~
* Where
* - `CIPHER_NAME` is the name of the underlying block cipher (i.e. AES or DES)
* - `MODE` is the block mode of the cipher operation (i.e. CBC or CTR)
*
* For stream ciphers:
* ~~~~~~~~~~~~~{.c}
* psa_drv_accel_cipher_setup_<CIPHER_NAME>
* ~~~~~~~~~~~~~
* Where `CIPHER_NAME` is the name of a stream cipher (i.e. RC4)
*
* \param[in,out] p_context A structure that will contain the
* hardware-specific cipher context
* \param[in] direction Indicates if the operation is an encrypt or a
* decrypt
* \param[in] p_key_data A buffer containing the cleartext key material
* to be used in the operation
* \param[in] key_data_size The size in bytes of the key material
*
* \retval PSA_SUCCESS
*/
typedef psa_status_t (*psa_drv_accel_cipher_setup_t)(psa_drv_accel_cipher_context_t *p_context,
psa_encrypt_or_decrypt_t direction,
const uint8_t *p_key_data,
size_t key_data_size);
/** \brief The function prototype for the set initialization vector operation
* of hardware-accelerated block cipher operations
* Functions that implement this prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_accel_cipher_set_iv_<CIPHER_NAME>_<MODE>
* ~~~~~~~~~~~~~
* Where
* - `CIPHER_NAME` is the name of the underlying block cipher (i.e. AES or DES)
* - `MODE` is the block mode of the cipher operation (i.e. CBC or CTR)
*
* \param[in,out] p_context A structure that contains the previously setup
* hardware-specific cipher context
* \param[in] p_iv A buffer containing the initialization vecotr
* \param[in] iv_length The size in bytes of the contents of `p_iv`
*
* \retval PSA_SUCCESS
*/
typedef psa_status_t (*psa_drv_accel_cipher_set_iv_t)(psa_drv_accel_cipher_context_t *p_context,
const uint8_t *p_iv,
size_t iv_length);
/** \brief The function prototype for the update operation of
* hardware-accelerated block cipher operations.
*
* Functions that implement this prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_accel_cipher_update_<CIPHER_NAME>_<MODE>
* ~~~~~~~~~~~~~
* Where
* - `CIPHER_NAME` is the name of the underlying block cipher (i.e. AES or DES)
* - `MODE` is the block mode of the cipher operation (i.e. CBC or CTR)
*
* \param[in,out] p_context A hardware-specific structure for the
* previously started cipher operation
* \param[in] p_input A buffer containing the data to be
* encrypted or decrypted
* \param[in] input_size The size in bytes of the `p_input` buffer
* \param[out] p_output A caller-allocated buffer where the
* generated output will be placed
* \param[in] output_size The size in bytes of the `p_output` buffer
* \param[out] p_output_length After completion, will contain the number
* of bytes placed in the `p_output` buffer
*
* \retval PSA_SUCCESS
*/
typedef psa_status_t (*psa_drv_accel_cipher_update_t)(psa_drv_accel_cipher_context_t *p_context,
const uint8_t *p_input,
size_t input_size,
uint8_t *p_output,
size_t output_size,
size_t *p_output_length);
/** \brief The function prototype for the finish operation of
* hardware-accelerated block cipher operations.
*
* Functions that implement this prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_accel_cipher_finish_<CIPHER_NAME>_<MODE>
* ~~~~~~~~~~~~~
* Where
* - `CIPHER_NAME` is the name of the underlying block cipher (i.e. AES or DES)
* - `MODE` is the block mode of the cipher operation (i.e. CBC or CTR)
*
* \param[in,out] p_context A hardware-specific structure for the
* previously started cipher operation
* \param[out] p_output A caller-allocated buffer where the generated
* output will be placed
* \param[in] output_size The size in bytes of the `p_output` buffer
* \param[out] p_output_length After completion, will contain the number of
* bytes placed in the `p_output` buffer
*
* \retval PSA_SUCCESS
*/
typedef psa_status_t (*psa_drv_accel_cipher_finish_t)(psa_drv_accel_cipher_context_t *p_context,
uint8_t *p_output,
size_t output_size,
size_t *p_output_length);
/** \brief The function prototype for the abort operation of
* hardware-accelerated block cipher operations.
*
* Functions that implement the following prototype should be named in the
* following convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_accel_cipher_abort_<CIPHER_NAME>_<MODE>
* ~~~~~~~~~~~~~
* Where
* - `CIPHER_NAME` is the name of the underlying block cipher (i.e. AES or DES)
* - `MODE` is the block mode of the cipher operation (i.e. CBC or CTR)
*
* \param[in,out] p_context A hardware-specific structure for the
* previously started cipher operation
*
* \retval PSA_SUCCESS
*/
typedef psa_status_t (*psa_drv_accel_cipher_abort_t)(psa_drv_accel_cipher_context_t *p_context);
/**@}*/
/** \defgroup accel_aead Hardware-Accelerated Authenticated Encryption with Additional Data
*
* Hardware-accelerated Authenticated Encryption with Additional Data (AEAD)
* operations must be done in one function call. While this creates a burden
* for implementers as there must be sufficient space in memory for the entire
* message, it prevents decrypted data from being made available before the
* authentication operation is complete and the data is known to be authentic.
*/
/**@{*/
/** \brief The function prototype for the hardware-accelerated authenticated
* encryption operation.
*
* Functions that implement this prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_accel_aead_<ALGO>_encrypt
* ~~~~~~~~~~~~~
* Where `ALGO` is the name of the AEAD algorithm
*
* \param[in] p_key A pointer to the key material
* \param[in] key_length The size in bytes of the key material
* \param[in] alg The AEAD algorithm to compute
* (\c PSA_ALG_XXX value such that
* #PSA_ALG_IS_AEAD(`alg`) is true)
* \param[in] nonce Nonce or IV to use
* \param[in] nonce_length Size of the `nonce` buffer in bytes
* \param[in] additional_data Additional data that will be MACed
* but not encrypted.
* \param[in] additional_data_length Size of `additional_data` in bytes
* \param[in] plaintext Data that will be MACed and
* encrypted.
* \param[in] plaintext_length Size of `plaintext` in bytes
* \param[out] ciphertext Output buffer for the authenticated and
* encrypted data. The additional data is
* not part of this output. For algorithms
* where the encrypted data and the
* authentication tag are defined as
* separate outputs, the authentication
* tag is appended to the encrypted data.
* \param[in] ciphertext_size Size of the `ciphertext` buffer in
* bytes
* This must be at least
* #PSA_AEAD_ENCRYPT_OUTPUT_SIZE(`alg`,
* `plaintext_length`).
* \param[out] ciphertext_length On success, the size of the output in
* the `ciphertext` buffer
*
* \retval #PSA_SUCCESS
*
*/
typedef psa_status_t (*psa_drv_accel_aead_encrypt_t)(const uint8_t *p_key,
size_t key_length,
psa_algorithm_t alg,
const uint8_t *nonce,
size_t nonce_length,
const uint8_t *additional_data,
size_t additional_data_length,
const uint8_t *plaintext,
size_t plaintext_length,
uint8_t *ciphertext,
size_t ciphertext_size,
size_t *ciphertext_length);
/** \brief The function prototype for the hardware-accelerated authenticated
* decryption operation.
*
* Functions that implement this prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_accel_aead_<ALGO>_decrypt
* ~~~~~~~~~~~~~
* Where `ALGO` is the name of the AEAD algorithm
* \param[in] p_key A pointer to the key material
* \param[in] key_length The size in bytes of the key material
* \param[in] alg The AEAD algorithm to compute
* (\c PSA_ALG_XXX value such that
* #PSA_ALG_IS_AEAD(`alg`) is true)
* \param[in] nonce Nonce or IV to use
* \param[in] nonce_length Size of the `nonce` buffer in bytes
* \param[in] additional_data Additional data that has been MACed
* but not encrypted
* \param[in] additional_data_length Size of `additional_data` in bytes
* \param[in] ciphertext Data that has been MACed and
* encrypted
* For algorithms where the encrypted data
* and the authentication tag are defined
* as separate inputs, the buffer must
* contain the encrypted data followed by
* the authentication tag.
* \param[in] ciphertext_length Size of `ciphertext` in bytes
* \param[out] plaintext Output buffer for the decrypted data
* \param[in] plaintext_size Size of the `plaintext` buffer in
* bytes
* This must be at least
* #PSA_AEAD_DECRYPT_OUTPUT_SIZE(`alg`,
* `ciphertext_length`).
* \param[out] plaintext_length On success, the size of the output
* in the \b plaintext buffer
*
* \retval #PSA_SUCCESS
* Success.
*/
typedef psa_status_t (*psa_drv_accel_aead_decrypt_t)(const uint8_t *p_key,
size_t key_length,
psa_algorithm_t alg,
const uint8_t *nonce,
size_t nonce_length,
const uint8_t *additional_data,
size_t additional_data_length,
const uint8_t *ciphertext,
size_t ciphertext_length,
uint8_t *plaintext,
size_t plaintext_size,
size_t *plaintext_length);
/**@}*/
/** \defgroup accel_asymmetric Hardware-Accelerated Asymmetric Cryptography
*
* Since the amount of data that can (or should) be encrypted or signed using
* asymmetric keys is limited by the key size, hardware-accelerated asymmetric
* key operations must be done in single function calls.
*/
/**@{*/
/**
* \brief The function prototype for the hardware-accelerated asymmetric sign
* operation.
*
* Functions that implement this prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_accel_asymmetric_<ALGO>_sign
* ~~~~~~~~~~~~~
* Where `ALGO` is the name of the signing algorithm
*
* This function supports any asymmetric-key output from psa_export_key() as
* the buffer in \p p_key. Refer to the documentation of \ref
* psa_export_key() for the formats.
*
* \param[in] p_key A buffer containing the private key
* material
* \param[in] key_size The size in bytes of the `p_key` data
* \param[in] alg A signature algorithm that is compatible
* with the type of `p_key`
* \param[in] p_hash The hash or message to sign
* \param[in] hash_length Size of the `p_hash` buffer in bytes
* \param[out] p_signature Buffer where the signature is to be written
* \param[in] signature_size Size of the `p_signature` buffer in bytes
* \param[out] p_signature_length On success, the number of bytes
* that make up the returned signature value
*
* \retval PSA_SUCCESS
*/
typedef psa_status_t (*psa_drv_accel_asymmetric_sign_t)(const uint8_t *p_key,
size_t key_size,
psa_algorithm_t alg,
psa_key_type_t key_type,
const uint8_t *p_hash,
size_t hash_length,
uint8_t *p_signature,
size_t signature_size,
size_t *p_signature_length);
/**
* \brief The function prototype for the hardware-accelerated signature verify
* operation
*
* Functions that implement this prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_accel_asymmetric_<ALGO>_verify
* ~~~~~~~~~~~~~
* Where `ALGO` is the name of the signing algorithm
*
* This function supports any output from \ref psa_export_public_key() as the
* buffer in \p p_key. Refer to the documentation of \ref
* psa_export_public_key() for the format of public keys and to the
* documentation of \ref psa_export_key() for the format for other key types.
*
* \param[in] p_key A buffer containing the public key material
* \param[in] key_size The size in bytes of the `p_key` data
* \param[in] alg A signature algorithm that is compatible with
* the type of `key`
* \param[in] p_hash The hash or message whose signature is to be
* verified
* \param[in] hash_length Size of the `p_hash` buffer in bytes
* \param[in] p_signature Buffer containing the signature to verify
* \param[in] signature_length Size of the `p_signature` buffer in bytes
*
* \retval PSA_SUCCESS
* The signature is valid.
*/
typedef psa_status_t (*psa_drv_accel_asymmetric_verify_t)(const uint8_t *p_key,
size_t key_size,
psa_algorithm_t alg,
psa_key_type_t key_type,
const uint8_t *p_hash,
size_t hash_length,
const uint8_t *p_signature,
size_t signature_length);
/**
* \brief The function prototype for the hardware-accelerated asymmetric
* encrypt operation
*
* Functions that implement this prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_accel_asymmetric_<ALGO>_encrypt
* ~~~~~~~~~~~~~
* Where `ALGO` is the name of the encryption algorithm
*
* This function supports any output from \ref psa_export_public_key() as the
* buffer in \p p_key. Refer to the documentation of \ref
* psa_export_public_key() for the format of public keys and to the
* documentation of \ref psa_export_key() for the format for other key types.
*
* \param[in] p_key A buffer containing the public key material
* \param[in] key_size The size in bytes of the `p_key` data
* \param[in] alg An asymmetric encryption algorithm that is
* compatible with the type of `key`
* \param[in] p_input The message to encrypt
* \param[in] input_length Size of the `p_input` buffer in bytes
* \param[in] p_salt A salt or label, if supported by the
* encryption algorithm
* If the algorithm does not support a
* salt, pass `NULL`
* If the algorithm supports an optional
* salt and you do not want to pass a salt,
* pass `NULL`.
* For #PSA_ALG_RSA_PKCS1V15_CRYPT, no salt is
* supported.
* \param[in] salt_length Size of the `p_salt` buffer in bytes
* If `p_salt` is `NULL`, pass 0.
* \param[out] p_output Buffer where the encrypted message is to
* be written
* \param[in] output_size Size of the `p_output` buffer in bytes
* \param[out] p_output_length On success, the number of bytes
* that make up the returned output
*
* \retval PSA_SUCCESS
*/
typedef psa_status_t (*psa_drv_accel_asymmetric_encrypt_t)(const uint8_t *p_key,
size_t key_size,
psa_algorithm_t alg,
psa_key_type_t key_type,
const uint8_t *p_input,
size_t input_length,
const uint8_t *p_salt,
size_t salt_length,
uint8_t *p_output,
size_t output_size,
size_t *p_output_length);
/**
* \brief The function prototype for the hardware=acce;erated asymmetric
* decrypt operation
*
* Functions that implement this prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_accel_asymmetric_<ALGO>_decrypt
* ~~~~~~~~~~~~~
* Where `ALGO` is the name of the encryption algorithm
*
* This function supports any asymmetric-key output from psa_export_key() as
* the buffer in \p p_key. Refer to the documentation of \ref
* psa_export_key() for the formats.
*
* \param[in] p_key A buffer containing the private key material
* \param[in] key_size The size in bytes of the `p_key` data
* \param[in] alg An asymmetric encryption algorithm that is
* compatible with the type of `key`
* \param[in] p_input The message to decrypt
* \param[in] input_length Size of the `p_input` buffer in bytes
* \param[in] p_salt A salt or label, if supported by the
* encryption algorithm
* If the algorithm does not support a
* salt, pass `NULL`.
* If the algorithm supports an optional
* salt and you do not want to pass a salt,
* pass `NULL`.
* For #PSA_ALG_RSA_PKCS1V15_CRYPT, no salt is
* supported
* \param[in] salt_length Size of the `p_salt` buffer in bytes
* If `p_salt` is `NULL`, pass 0
* \param[out] p_output Buffer where the decrypted message is to
* be written
* \param[in] output_size Size of the `p_output` buffer in bytes
* \param[out] p_output_length On success, the number of bytes
* that make up the returned output
*
* \retval PSA_SUCCESS
*/
typedef psa_status_t (*psa_drv_accel_asymmetric_decrypt_t)(const uint8_t *p_key,
size_t key_size,
psa_algorithm_t alg,
psa_key_type_t key_type,
const uint8_t *p_input,
size_t input_length,
const uint8_t *p_salt,
size_t salt_length,
uint8_t *p_output,
size_t output_size,
size_t *p_output_length);
/**@}*/
#ifdef __cplusplus
}
#endif
#endif /* PSA_CRYPTO_ACCEL_DRIVER_H */

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/**
* \file psa/crypto_compat.h
*
* \brief PSA cryptography module: Backward compatibility aliases
*
* This header declares alternative names for macro and functions.
* New application code should not use these names.
* These names may be removed in a future version of Mbed Crypto.
*
* \note This file may not be included directly. Applications must
* include psa/crypto.h.
*/
/*
* Copyright The Mbed TLS Contributors
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef PSA_CRYPTO_COMPAT_H
#define PSA_CRYPTO_COMPAT_H
#ifdef __cplusplus
extern "C" {
#endif
#if !defined(MBEDTLS_DEPRECATED_REMOVED)
/*
* Mechanism for declaring deprecated values
*/
#if defined(MBEDTLS_DEPRECATED_WARNING) && !defined(MBEDTLS_PSA_DEPRECATED)
#define MBEDTLS_PSA_DEPRECATED __attribute__((deprecated))
#else
#define MBEDTLS_PSA_DEPRECATED
#endif
typedef MBEDTLS_PSA_DEPRECATED size_t mbedtls_deprecated_size_t;
typedef MBEDTLS_PSA_DEPRECATED psa_status_t mbedtls_deprecated_psa_status_t;
typedef MBEDTLS_PSA_DEPRECATED psa_key_usage_t mbedtls_deprecated_psa_key_usage_t;
typedef MBEDTLS_PSA_DEPRECATED psa_ecc_family_t mbedtls_deprecated_psa_ecc_family_t;
typedef MBEDTLS_PSA_DEPRECATED psa_dh_family_t mbedtls_deprecated_psa_dh_family_t;
typedef MBEDTLS_PSA_DEPRECATED psa_ecc_family_t psa_ecc_curve_t;
typedef MBEDTLS_PSA_DEPRECATED psa_dh_family_t psa_dh_group_t;
#define PSA_KEY_TYPE_GET_CURVE PSA_KEY_TYPE_ECC_GET_FAMILY
#define PSA_KEY_TYPE_GET_GROUP PSA_KEY_TYPE_DH_GET_FAMILY
#define MBEDTLS_DEPRECATED_CONSTANT( type, value ) \
( (mbedtls_deprecated_##type) ( value ) )
/*
* Deprecated PSA Crypto error code definitions (PSA Crypto API <= 1.0 beta2)
*/
#define PSA_ERROR_UNKNOWN_ERROR \
MBEDTLS_DEPRECATED_CONSTANT( psa_status_t, PSA_ERROR_GENERIC_ERROR )
#define PSA_ERROR_OCCUPIED_SLOT \
MBEDTLS_DEPRECATED_CONSTANT( psa_status_t, PSA_ERROR_ALREADY_EXISTS )
#define PSA_ERROR_EMPTY_SLOT \
MBEDTLS_DEPRECATED_CONSTANT( psa_status_t, PSA_ERROR_DOES_NOT_EXIST )
#define PSA_ERROR_INSUFFICIENT_CAPACITY \
MBEDTLS_DEPRECATED_CONSTANT( psa_status_t, PSA_ERROR_INSUFFICIENT_DATA )
#define PSA_ERROR_TAMPERING_DETECTED \
MBEDTLS_DEPRECATED_CONSTANT( psa_status_t, PSA_ERROR_CORRUPTION_DETECTED )
/*
* Deprecated PSA Crypto numerical encodings (PSA Crypto API <= 1.0 beta3)
*/
#define PSA_KEY_USAGE_SIGN \
MBEDTLS_DEPRECATED_CONSTANT( psa_key_usage_t, PSA_KEY_USAGE_SIGN_HASH )
#define PSA_KEY_USAGE_VERIFY \
MBEDTLS_DEPRECATED_CONSTANT( psa_key_usage_t, PSA_KEY_USAGE_VERIFY_HASH )
/*
* Deprecated PSA Crypto size calculation macros (PSA Crypto API <= 1.0 beta3)
*/
#define PSA_ASYMMETRIC_SIGNATURE_MAX_SIZE \
MBEDTLS_DEPRECATED_CONSTANT( size_t, PSA_SIGNATURE_MAX_SIZE )
#define PSA_ASYMMETRIC_SIGN_OUTPUT_SIZE( key_type, key_bits, alg ) \
MBEDTLS_DEPRECATED_CONSTANT( size_t, PSA_SIGN_OUTPUT_SIZE( key_type, key_bits, alg ) )
/*
* Deprecated PSA Crypto function names (PSA Crypto API <= 1.0 beta3)
*/
MBEDTLS_PSA_DEPRECATED static inline psa_status_t psa_asymmetric_sign( psa_key_handle_t key,
psa_algorithm_t alg,
const uint8_t *hash,
size_t hash_length,
uint8_t *signature,
size_t signature_size,
size_t *signature_length )
{
return psa_sign_hash( key, alg, hash, hash_length, signature, signature_size, signature_length );
}
MBEDTLS_PSA_DEPRECATED static inline psa_status_t psa_asymmetric_verify( psa_key_handle_t key,
psa_algorithm_t alg,
const uint8_t *hash,
size_t hash_length,
const uint8_t *signature,
size_t signature_length )
{
return psa_verify_hash( key, alg, hash, hash_length, signature, signature_length );
}
#endif /* MBEDTLS_DEPRECATED_REMOVED */
/*
* Size-specific elliptic curve families.
*/
#define PSA_ECC_CURVE_SECP160K1 \
MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_SECP_K1 )
#define PSA_ECC_CURVE_SECP192K1 \
MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_SECP_K1 )
#define PSA_ECC_CURVE_SECP224K1 \
MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_SECP_K1 )
#define PSA_ECC_CURVE_SECP256K1 \
MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_SECP_K1 )
#define PSA_ECC_CURVE_SECP160R1 \
MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_SECP_R1 )
#define PSA_ECC_CURVE_SECP192R1 \
MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_SECP_R1 )
#define PSA_ECC_CURVE_SECP224R1 \
MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_SECP_R1 )
#define PSA_ECC_CURVE_SECP256R1 \
MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_SECP_R1 )
#define PSA_ECC_CURVE_SECP384R1 \
MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_SECP_R1 )
#define PSA_ECC_CURVE_SECP521R1 \
MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_SECP_R1 )
#define PSA_ECC_CURVE_SECP160R2 \
MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_SECP_R2 )
#define PSA_ECC_CURVE_SECT163K1 \
MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_SECT_K1 )
#define PSA_ECC_CURVE_SECT233K1 \
MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_SECT_K1 )
#define PSA_ECC_CURVE_SECT239K1 \
MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_SECT_K1 )
#define PSA_ECC_CURVE_SECT283K1 \
MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_SECT_K1 )
#define PSA_ECC_CURVE_SECT409K1 \
MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_SECT_K1 )
#define PSA_ECC_CURVE_SECT571K1 \
MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_SECT_K1 )
#define PSA_ECC_CURVE_SECT163R1 \
MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_SECT_R1 )
#define PSA_ECC_CURVE_SECT193R1 \
MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_SECT_R1 )
#define PSA_ECC_CURVE_SECT233R1 \
MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_SECT_R1 )
#define PSA_ECC_CURVE_SECT283R1 \
MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_SECT_R1 )
#define PSA_ECC_CURVE_SECT409R1 \
MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_SECT_R1 )
#define PSA_ECC_CURVE_SECT571R1 \
MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_SECT_R1 )
#define PSA_ECC_CURVE_SECT163R2 \
MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_SECT_R2 )
#define PSA_ECC_CURVE_SECT193R2 \
MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_SECT_R2 )
#define PSA_ECC_CURVE_BRAINPOOL_P256R1 \
MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_BRAINPOOL_P_R1 )
#define PSA_ECC_CURVE_BRAINPOOL_P384R1 \
MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_BRAINPOOL_P_R1 )
#define PSA_ECC_CURVE_BRAINPOOL_P512R1 \
MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_BRAINPOOL_P_R1 )
#define PSA_ECC_CURVE_CURVE25519 \
MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_MONTGOMERY )
#define PSA_ECC_CURVE_CURVE448 \
MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_MONTGOMERY )
/*
* Curves that changed name due to PSA specification.
*/
#define PSA_ECC_CURVE_SECP_K1 \
MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_SECP_K1 )
#define PSA_ECC_CURVE_SECP_R1 \
MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_SECP_R1 )
#define PSA_ECC_CURVE_SECP_R2 \
MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_SECP_R2 )
#define PSA_ECC_CURVE_SECT_K1 \
MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_SECT_K1 )
#define PSA_ECC_CURVE_SECT_R1 \
MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_SECT_R1 )
#define PSA_ECC_CURVE_SECT_R2 \
MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_SECT_R2 )
#define PSA_ECC_CURVE_BRAINPOOL_P_R1 \
MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_BRAINPOOL_P_R1 )
#define PSA_ECC_CURVE_MONTGOMERY \
MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_MONTGOMERY )
/*
* Finite-field Diffie-Hellman families.
*/
#define PSA_DH_GROUP_FFDHE2048 \
MBEDTLS_DEPRECATED_CONSTANT( psa_dh_family_t, PSA_DH_FAMILY_RFC7919 )
#define PSA_DH_GROUP_FFDHE3072 \
MBEDTLS_DEPRECATED_CONSTANT( psa_dh_family_t, PSA_DH_FAMILY_RFC7919 )
#define PSA_DH_GROUP_FFDHE4096 \
MBEDTLS_DEPRECATED_CONSTANT( psa_dh_family_t, PSA_DH_FAMILY_RFC7919 )
#define PSA_DH_GROUP_FFDHE6144 \
MBEDTLS_DEPRECATED_CONSTANT( psa_dh_family_t, PSA_DH_FAMILY_RFC7919 )
#define PSA_DH_GROUP_FFDHE8192 \
MBEDTLS_DEPRECATED_CONSTANT( psa_dh_family_t, PSA_DH_FAMILY_RFC7919 )
/*
* Diffie-Hellman families that changed name due to PSA specification.
*/
#define PSA_DH_GROUP_RFC7919 \
MBEDTLS_DEPRECATED_CONSTANT( psa_dh_family_t, PSA_DH_FAMILY_RFC7919 )
#define PSA_DH_GROUP_CUSTOM \
MBEDTLS_DEPRECATED_CONSTANT( psa_dh_family_t, PSA_DH_FAMILY_CUSTOM )
#ifdef __cplusplus
}
#endif
#endif /* PSA_CRYPTO_COMPAT_H */

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/**
* \file psa/crypto_driver_common.h
* \brief Definitions for all PSA crypto drivers
*
* This file contains common definitions shared by all PSA crypto drivers.
* Do not include it directly: instead, include the header file(s) for
* the type(s) of driver that you are implementing. For example, if
* you are writing a driver for a chip that provides both a hardware
* random generator and an accelerator for some cryptographic algorithms,
* include `psa/crypto_entropy_driver.h` and `psa/crypto_accel_driver.h`.
*
* This file is part of the PSA Crypto Driver Model, containing functions for
* driver developers to implement to enable hardware to be called in a
* standardized way by a PSA Cryptographic API implementation. The functions
* comprising the driver model, which driver authors implement, are not
* intended to be called by application developers.
*/
/*
* Copyright The Mbed TLS Contributors
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef PSA_CRYPTO_DRIVER_COMMON_H
#define PSA_CRYPTO_DRIVER_COMMON_H
#include <stddef.h>
#include <stdint.h>
/* Include type definitions (psa_status_t, psa_algorithm_t,
* psa_key_type_t, etc.) and macros to build and analyze values
* of these types. */
#include "crypto_types.h"
#include "crypto_values.h"
/** For encrypt-decrypt functions, whether the operation is an encryption
* or a decryption. */
typedef enum {
PSA_CRYPTO_DRIVER_DECRYPT,
PSA_CRYPTO_DRIVER_ENCRYPT
} psa_encrypt_or_decrypt_t;
#endif /* PSA_CRYPTO_DRIVER_COMMON_H */

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/**
* \file psa/crypto_entropy_driver.h
* \brief PSA entropy source driver module
*
* This header declares types and function signatures for entropy sources.
*
* This file is part of the PSA Crypto Driver Model, containing functions for
* driver developers to implement to enable hardware to be called in a
* standardized way by a PSA Cryptographic API implementation. The functions
* comprising the driver model, which driver authors implement, are not
* intended to be called by application developers.
*/
/*
* Copyright The Mbed TLS Contributors
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef PSA_CRYPTO_ENTROPY_DRIVER_H
#define PSA_CRYPTO_ENTROPY_DRIVER_H
#include "crypto_driver_common.h"
#ifdef __cplusplus
extern "C" {
#endif
/** \defgroup driver_rng Entropy Generation
*/
/**@{*/
/** \brief Initialize an entropy driver
*
*
* \param[in,out] p_context A hardware-specific structure
* containing any context information for
* the implementation
*
* \retval PSA_SUCCESS
*/
typedef psa_status_t (*psa_drv_entropy_init_t)(void *p_context);
/** \brief Get a specified number of bits from the entropy source
*
* It retrives `buffer_size` bytes of data from the entropy source. The entropy
* source will always fill the provided buffer to its full size, however, most
* entropy sources have biases, and the actual amount of entropy contained in
* the buffer will be less than the number of bytes.
* The driver will return the actual number of bytes of entropy placed in the
* buffer in `p_received_entropy_bytes`.
* A PSA Crypto API implementation will likely feed the output of this function
* into a Digital Random Bit Generator (DRBG), and typically has a minimum
* amount of entropy that it needs.
* To accomplish this, the PSA Crypto implementation should be designed to call
* this function multiple times until it has received the required amount of
* entropy from the entropy source.
*
* \param[in,out] p_context A hardware-specific structure
* containing any context information
* for the implementation
* \param[out] p_buffer A caller-allocated buffer for the
* retrieved entropy to be placed in
* \param[in] buffer_size The allocated size of `p_buffer`
* \param[out] p_received_entropy_bits The amount of entropy (in bits)
* actually provided in `p_buffer`
*
* \retval PSA_SUCCESS
*/
typedef psa_status_t (*psa_drv_entropy_get_bits_t)(void *p_context,
uint8_t *p_buffer,
uint32_t buffer_size,
uint32_t *p_received_entropy_bits);
/**
* \brief A struct containing all of the function pointers needed to interface
* to an entropy source
*
* PSA Crypto API implementations should populate instances of the table as
* appropriate upon startup.
*
* If one of the functions is not implemented, it should be set to NULL.
*/
typedef struct {
/** The driver-specific size of the entropy context */
const size_t context_size;
/** Function that performs initialization for the entropy source */
psa_drv_entropy_init_t p_init;
/** Function that performs the get_bits operation for the entropy source */
psa_drv_entropy_get_bits_t p_get_bits;
} psa_drv_entropy_t;
/**@}*/
#ifdef __cplusplus
}
#endif
#endif /* PSA_CRYPTO_ENTROPY_DRIVER_H */

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/**
* \file psa/crypto_extra.h
*
* \brief PSA cryptography module: Mbed TLS vendor extensions
*
* \note This file may not be included directly. Applications must
* include psa/crypto.h.
*
* This file is reserved for vendor-specific definitions.
*/
/*
* Copyright The Mbed TLS Contributors
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef PSA_CRYPTO_EXTRA_H
#define PSA_CRYPTO_EXTRA_H
#include "mbedtls/platform_util.h"
#include "crypto_compat.h"
#ifdef __cplusplus
extern "C" {
#endif
/* UID for secure storage seed */
#define PSA_CRYPTO_ITS_RANDOM_SEED_UID 0xFFFFFF52
/** \addtogroup attributes
* @{
*/
/** \brief Declare the enrollment algorithm for a key.
*
* An operation on a key may indifferently use the algorithm set with
* psa_set_key_algorithm() or with this function.
*
* \param[out] attributes The attribute structure to write to.
* \param alg2 A second algorithm that the key may be used
* for, in addition to the algorithm set with
* psa_set_key_algorithm().
*
* \warning Setting an enrollment algorithm is not recommended, because
* using the same key with different algorithms can allow some
* attacks based on arithmetic relations between different
* computations made with the same key, or can escalate harmless
* side channels into exploitable ones. Use this function only
* if it is necessary to support a protocol for which it has been
* verified that the usage of the key with multiple algorithms
* is safe.
*/
static inline void psa_set_key_enrollment_algorithm(
psa_key_attributes_t *attributes,
psa_algorithm_t alg2)
{
attributes->core.policy.alg2 = alg2;
}
/** Retrieve the enrollment algorithm policy from key attributes.
*
* \param[in] attributes The key attribute structure to query.
*
* \return The enrollment algorithm stored in the attribute structure.
*/
static inline psa_algorithm_t psa_get_key_enrollment_algorithm(
const psa_key_attributes_t *attributes)
{
return( attributes->core.policy.alg2 );
}
#if defined(MBEDTLS_PSA_CRYPTO_SE_C)
/** Retrieve the slot number where a key is stored.
*
* A slot number is only defined for keys that are stored in a secure
* element.
*
* This information is only useful if the secure element is not entirely
* managed through the PSA Cryptography API. It is up to the secure
* element driver to decide how PSA slot numbers map to any other interface
* that the secure element may have.
*
* \param[in] attributes The key attribute structure to query.
* \param[out] slot_number On success, the slot number containing the key.
*
* \retval #PSA_SUCCESS
* The key is located in a secure element, and \p *slot_number
* indicates the slot number that contains it.
* \retval #PSA_ERROR_NOT_PERMITTED
* The caller is not permitted to query the slot number.
* Mbed Crypto currently does not return this error.
* \retval #PSA_ERROR_INVALID_ARGUMENT
* The key is not located in a secure element.
*/
psa_status_t psa_get_key_slot_number(
const psa_key_attributes_t *attributes,
psa_key_slot_number_t *slot_number );
/** Choose the slot number where a key is stored.
*
* This function declares a slot number in the specified attribute
* structure.
*
* A slot number is only meaningful for keys that are stored in a secure
* element. It is up to the secure element driver to decide how PSA slot
* numbers map to any other interface that the secure element may have.
*
* \note Setting a slot number in key attributes for a key creation can
* cause the following errors when creating the key:
* - #PSA_ERROR_NOT_SUPPORTED if the selected secure element does
* not support choosing a specific slot number.
* - #PSA_ERROR_NOT_PERMITTED if the caller is not permitted to
* choose slot numbers in general or to choose this specific slot.
* - #PSA_ERROR_INVALID_ARGUMENT if the chosen slot number is not
* valid in general or not valid for this specific key.
* - #PSA_ERROR_ALREADY_EXISTS if there is already a key in the
* selected slot.
*
* \param[out] attributes The attribute structure to write to.
* \param slot_number The slot number to set.
*/
static inline void psa_set_key_slot_number(
psa_key_attributes_t *attributes,
psa_key_slot_number_t slot_number )
{
attributes->core.flags |= MBEDTLS_PSA_KA_FLAG_HAS_SLOT_NUMBER;
attributes->slot_number = slot_number;
}
/** Remove the slot number attribute from a key attribute structure.
*
* This function undoes the action of psa_set_key_slot_number().
*
* \param[out] attributes The attribute structure to write to.
*/
static inline void psa_clear_key_slot_number(
psa_key_attributes_t *attributes )
{
attributes->core.flags &= ~MBEDTLS_PSA_KA_FLAG_HAS_SLOT_NUMBER;
}
/** Register a key that is already present in a secure element.
*
* The key must be located in a secure element designated by the
* lifetime field in \p attributes, in the slot set with
* psa_set_key_slot_number() in the attribute structure.
* This function makes the key available through the key identifier
* specified in \p attributes.
*
* \param[in] attributes The attributes of the existing key.
*
* \retval #PSA_SUCCESS
* The key was successfully registered.
* Note that depending on the design of the driver, this may or may
* not guarantee that a key actually exists in the designated slot
* and is compatible with the specified attributes.
* \retval #PSA_ERROR_ALREADY_EXISTS
* There is already a key with the identifier specified in
* \p attributes.
* \retval #PSA_ERROR_NOT_SUPPORTED
* The secure element driver for the specified lifetime does not
* support registering a key.
* \retval #PSA_ERROR_INVALID_ARGUMENT
* \p attributes specifies a lifetime which is not located
* in a secure element.
* \retval #PSA_ERROR_INVALID_ARGUMENT
* No slot number is specified in \p attributes,
* or the specified slot number is not valid.
* \retval #PSA_ERROR_NOT_PERMITTED
* The caller is not authorized to register the specified key slot.
* \retval #PSA_ERROR_INSUFFICIENT_MEMORY
* \retval #PSA_ERROR_COMMUNICATION_FAILURE
* \retval #PSA_ERROR_HARDWARE_FAILURE
* \retval #PSA_ERROR_CORRUPTION_DETECTED
* \retval #PSA_ERROR_BAD_STATE
* The library has not been previously initialized by psa_crypto_init().
* It is implementation-dependent whether a failure to initialize
* results in this error code.
*/
psa_status_t mbedtls_psa_register_se_key(
const psa_key_attributes_t *attributes);
#endif /* MBEDTLS_PSA_CRYPTO_SE_C */
/**@}*/
/**
* \brief Library deinitialization.
*
* This function clears all data associated with the PSA layer,
* including the whole key store.
*
* This is an Mbed TLS extension.
*/
void mbedtls_psa_crypto_free( void );
/** \brief Statistics about
* resource consumption related to the PSA keystore.
*
* \note The content of this structure is not part of the stable API and ABI
* of Mbed Crypto and may change arbitrarily from version to version.
*/
typedef struct mbedtls_psa_stats_s
{
/** Number of slots containing key material for a volatile key. */
size_t volatile_slots;
/** Number of slots containing key material for a key which is in
* internal persistent storage. */
size_t persistent_slots;
/** Number of slots containing a reference to a key in a
* secure element. */
size_t external_slots;
/** Number of slots which are occupied, but do not contain
* key material yet. */
size_t half_filled_slots;
/** Number of slots that contain cache data. */
size_t cache_slots;
/** Number of slots that are not used for anything. */
size_t empty_slots;
/** Largest key id value among open keys in internal persistent storage. */
psa_app_key_id_t max_open_internal_key_id;
/** Largest key id value among open keys in secure elements. */
psa_app_key_id_t max_open_external_key_id;
} mbedtls_psa_stats_t;
/** \brief Get statistics about
* resource consumption related to the PSA keystore.
*
* \note When Mbed Crypto is built as part of a service, with isolation
* between the application and the keystore, the service may or
* may not expose this function.
*/
void mbedtls_psa_get_stats( mbedtls_psa_stats_t *stats );
/**
* \brief Inject an initial entropy seed for the random generator into
* secure storage.
*
* This function injects data to be used as a seed for the random generator
* used by the PSA Crypto implementation. On devices that lack a trusted
* entropy source (preferably a hardware random number generator),
* the Mbed PSA Crypto implementation uses this value to seed its
* random generator.
*
* On devices without a trusted entropy source, this function must be
* called exactly once in the lifetime of the device. On devices with
* a trusted entropy source, calling this function is optional.
* In all cases, this function may only be called before calling any
* other function in the PSA Crypto API, including psa_crypto_init().
*
* When this function returns successfully, it populates a file in
* persistent storage. Once the file has been created, this function
* can no longer succeed.
*
* If any error occurs, this function does not change the system state.
* You can call this function again after correcting the reason for the
* error if possible.
*
* \warning This function **can** fail! Callers MUST check the return status.
*
* \warning If you use this function, you should use it as part of a
* factory provisioning process. The value of the injected seed
* is critical to the security of the device. It must be
* *secret*, *unpredictable* and (statistically) *unique per device*.
* You should be generate it randomly using a cryptographically
* secure random generator seeded from trusted entropy sources.
* You should transmit it securely to the device and ensure
* that its value is not leaked or stored anywhere beyond the
* needs of transmitting it from the point of generation to
* the call of this function, and erase all copies of the value
* once this function returns.
*
* This is an Mbed TLS extension.
*
* \note This function is only available on the following platforms:
* * If the compile-time option MBEDTLS_PSA_INJECT_ENTROPY is enabled.
* Note that you must provide compatible implementations of
* mbedtls_nv_seed_read and mbedtls_nv_seed_write.
* * In a client-server integration of PSA Cryptography, on the client side,
* if the server supports this feature.
* \param[in] seed Buffer containing the seed value to inject.
* \param[in] seed_size Size of the \p seed buffer.
* The size of the seed in bytes must be greater
* or equal to both #MBEDTLS_ENTROPY_MIN_PLATFORM
* and #MBEDTLS_ENTROPY_BLOCK_SIZE.
* It must be less or equal to
* #MBEDTLS_ENTROPY_MAX_SEED_SIZE.
*
* \retval #PSA_SUCCESS
* The seed value was injected successfully. The random generator
* of the PSA Crypto implementation is now ready for use.
* You may now call psa_crypto_init() and use the PSA Crypto
* implementation.
* \retval #PSA_ERROR_INVALID_ARGUMENT
* \p seed_size is out of range.
* \retval #PSA_ERROR_STORAGE_FAILURE
* There was a failure reading or writing from storage.
* \retval #PSA_ERROR_NOT_PERMITTED
* The library has already been initialized. It is no longer
* possible to call this function.
*/
psa_status_t mbedtls_psa_inject_entropy(const uint8_t *seed,
size_t seed_size);
/** \addtogroup crypto_types
* @{
*/
/** DSA public key.
*
* The import and export format is the
* representation of the public key `y = g^x mod p` as a big-endian byte
* string. The length of the byte string is the length of the base prime `p`
* in bytes.
*/
#define PSA_KEY_TYPE_DSA_PUBLIC_KEY ((psa_key_type_t)0x4002)
/** DSA key pair (private and public key).
*
* The import and export format is the
* representation of the private key `x` as a big-endian byte string. The
* length of the byte string is the private key size in bytes (leading zeroes
* are not stripped).
*
* Determinstic DSA key derivation with psa_generate_derived_key follows
* FIPS 186-4 &sect;B.1.2: interpret the byte string as integer
* in big-endian order. Discard it if it is not in the range
* [0, *N* - 2] where *N* is the boundary of the private key domain
* (the prime *p* for Diffie-Hellman, the subprime *q* for DSA,
* or the order of the curve's base point for ECC).
* Add 1 to the resulting integer and use this as the private key *x*.
*
*/
#define PSA_KEY_TYPE_DSA_KEY_PAIR ((psa_key_type_t)0x7002)
/** Whether a key type is an DSA key (pair or public-only). */
#define PSA_KEY_TYPE_IS_DSA(type) \
(PSA_KEY_TYPE_PUBLIC_KEY_OF_KEY_PAIR(type) == PSA_KEY_TYPE_DSA_PUBLIC_KEY)
#define PSA_ALG_DSA_BASE ((psa_algorithm_t)0x10040000)
/** DSA signature with hashing.
*
* This is the signature scheme defined by FIPS 186-4,
* with a random per-message secret number (*k*).
*
* \param hash_alg A hash algorithm (\c PSA_ALG_XXX value such that
* #PSA_ALG_IS_HASH(\p hash_alg) is true).
* This includes #PSA_ALG_ANY_HASH
* when specifying the algorithm in a usage policy.
*
* \return The corresponding DSA signature algorithm.
* \return Unspecified if \p hash_alg is not a supported
* hash algorithm.
*/
#define PSA_ALG_DSA(hash_alg) \
(PSA_ALG_DSA_BASE | ((hash_alg) & PSA_ALG_HASH_MASK))
#define PSA_ALG_DETERMINISTIC_DSA_BASE ((psa_algorithm_t)0x10050000)
#define PSA_ALG_DSA_DETERMINISTIC_FLAG PSA_ALG_ECDSA_DETERMINISTIC_FLAG
/** Deterministic DSA signature with hashing.
*
* This is the deterministic variant defined by RFC 6979 of
* the signature scheme defined by FIPS 186-4.
*
* \param hash_alg A hash algorithm (\c PSA_ALG_XXX value such that
* #PSA_ALG_IS_HASH(\p hash_alg) is true).
* This includes #PSA_ALG_ANY_HASH
* when specifying the algorithm in a usage policy.
*
* \return The corresponding DSA signature algorithm.
* \return Unspecified if \p hash_alg is not a supported
* hash algorithm.
*/
#define PSA_ALG_DETERMINISTIC_DSA(hash_alg) \
(PSA_ALG_DETERMINISTIC_DSA_BASE | ((hash_alg) & PSA_ALG_HASH_MASK))
#define PSA_ALG_IS_DSA(alg) \
(((alg) & ~PSA_ALG_HASH_MASK & ~PSA_ALG_DSA_DETERMINISTIC_FLAG) == \
PSA_ALG_DSA_BASE)
#define PSA_ALG_DSA_IS_DETERMINISTIC(alg) \
(((alg) & PSA_ALG_DSA_DETERMINISTIC_FLAG) != 0)
#define PSA_ALG_IS_DETERMINISTIC_DSA(alg) \
(PSA_ALG_IS_DSA(alg) && PSA_ALG_DSA_IS_DETERMINISTIC(alg))
#define PSA_ALG_IS_RANDOMIZED_DSA(alg) \
(PSA_ALG_IS_DSA(alg) && !PSA_ALG_DSA_IS_DETERMINISTIC(alg))
/* We need to expand the sample definition of this macro from
* the API definition. */
#undef PSA_ALG_IS_HASH_AND_SIGN
#define PSA_ALG_IS_HASH_AND_SIGN(alg) \
(PSA_ALG_IS_RSA_PSS(alg) || PSA_ALG_IS_RSA_PKCS1V15_SIGN(alg) || \
PSA_ALG_IS_DSA(alg) || PSA_ALG_IS_ECDSA(alg))
/**@}*/
/** \addtogroup attributes
* @{
*/
/** Custom Diffie-Hellman group.
*
* For keys of type #PSA_KEY_TYPE_DH_PUBLIC_KEY(#PSA_DH_FAMILY_CUSTOM) or
* #PSA_KEY_TYPE_DH_KEY_PAIR(#PSA_DH_FAMILY_CUSTOM), the group data comes
* from domain parameters set by psa_set_key_domain_parameters().
*/
#define PSA_DH_FAMILY_CUSTOM ((psa_dh_family_t) 0x7e)
/**
* \brief Set domain parameters for a key.
*
* Some key types require additional domain parameters in addition to
* the key type identifier and the key size. Use this function instead
* of psa_set_key_type() when you need to specify domain parameters.
*
* The format for the required domain parameters varies based on the key type.
*
* - For RSA keys (#PSA_KEY_TYPE_RSA_PUBLIC_KEY or #PSA_KEY_TYPE_RSA_KEY_PAIR),
* the domain parameter data consists of the public exponent,
* represented as a big-endian integer with no leading zeros.
* This information is used when generating an RSA key pair.
* When importing a key, the public exponent is read from the imported
* key data and the exponent recorded in the attribute structure is ignored.
* As an exception, the public exponent 65537 is represented by an empty
* byte string.
* - For DSA keys (#PSA_KEY_TYPE_DSA_PUBLIC_KEY or #PSA_KEY_TYPE_DSA_KEY_PAIR),
* the `Dss-Parms` format as defined by RFC 3279 &sect;2.3.2.
* ```
* Dss-Parms ::= SEQUENCE {
* p INTEGER,
* q INTEGER,
* g INTEGER
* }
* ```
* - For Diffie-Hellman key exchange keys
* (#PSA_KEY_TYPE_DH_PUBLIC_KEY(#PSA_DH_FAMILY_CUSTOM) or
* #PSA_KEY_TYPE_DH_KEY_PAIR(#PSA_DH_FAMILY_CUSTOM)), the
* `DomainParameters` format as defined by RFC 3279 &sect;2.3.3.
* ```
* DomainParameters ::= SEQUENCE {
* p INTEGER, -- odd prime, p=jq +1
* g INTEGER, -- generator, g
* q INTEGER, -- factor of p-1
* j INTEGER OPTIONAL, -- subgroup factor
* validationParms ValidationParms OPTIONAL
* }
* ValidationParms ::= SEQUENCE {
* seed BIT STRING,
* pgenCounter INTEGER
* }
* ```
*
* \note This function may allocate memory or other resources.
* Once you have called this function on an attribute structure,
* you must call psa_reset_key_attributes() to free these resources.
*
* \note This is an experimental extension to the interface. It may change
* in future versions of the library.
*
* \param[in,out] attributes Attribute structure where the specified domain
* parameters will be stored.
* If this function fails, the content of
* \p attributes is not modified.
* \param type Key type (a \c PSA_KEY_TYPE_XXX value).
* \param[in] data Buffer containing the key domain parameters.
* The content of this buffer is interpreted
* according to \p type as described above.
* \param data_length Size of the \p data buffer in bytes.
*
* \retval #PSA_SUCCESS
* \retval #PSA_ERROR_INVALID_ARGUMENT
* \retval #PSA_ERROR_NOT_SUPPORTED
* \retval #PSA_ERROR_INSUFFICIENT_MEMORY
*/
psa_status_t psa_set_key_domain_parameters(psa_key_attributes_t *attributes,
psa_key_type_t type,
const uint8_t *data,
size_t data_length);
/**
* \brief Get domain parameters for a key.
*
* Get the domain parameters for a key with this function, if any. The format
* of the domain parameters written to \p data is specified in the
* documentation for psa_set_key_domain_parameters().
*
* \note This is an experimental extension to the interface. It may change
* in future versions of the library.
*
* \param[in] attributes The key attribute structure to query.
* \param[out] data On success, the key domain parameters.
* \param data_size Size of the \p data buffer in bytes.
* The buffer is guaranteed to be large
* enough if its size in bytes is at least
* the value given by
* PSA_KEY_DOMAIN_PARAMETERS_SIZE().
* \param[out] data_length On success, the number of bytes
* that make up the key domain parameters data.
*
* \retval #PSA_SUCCESS
* \retval #PSA_ERROR_BUFFER_TOO_SMALL
*/
psa_status_t psa_get_key_domain_parameters(
const psa_key_attributes_t *attributes,
uint8_t *data,
size_t data_size,
size_t *data_length);
/** Safe output buffer size for psa_get_key_domain_parameters().
*
* This macro returns a compile-time constant if its arguments are
* compile-time constants.
*
* \warning This function may call its arguments multiple times or
* zero times, so you should not pass arguments that contain
* side effects.
*
* \note This is an experimental extension to the interface. It may change
* in future versions of the library.
*
* \param key_type A supported key type.
* \param key_bits The size of the key in bits.
*
* \return If the parameters are valid and supported, return
* a buffer size in bytes that guarantees that
* psa_get_key_domain_parameters() will not fail with
* #PSA_ERROR_BUFFER_TOO_SMALL.
* If the parameters are a valid combination that is not supported
* by the implementation, this macro shall return either a
* sensible size or 0.
* If the parameters are not valid, the
* return value is unspecified.
*/
#define PSA_KEY_DOMAIN_PARAMETERS_SIZE(key_type, key_bits) \
(PSA_KEY_TYPE_IS_RSA(key_type) ? sizeof(int) : \
PSA_KEY_TYPE_IS_DH(key_type) ? PSA_DH_KEY_DOMAIN_PARAMETERS_SIZE(key_bits) : \
PSA_KEY_TYPE_IS_DSA(key_type) ? PSA_DSA_KEY_DOMAIN_PARAMETERS_SIZE(key_bits) : \
0)
#define PSA_DH_KEY_DOMAIN_PARAMETERS_SIZE(key_bits) \
(4 + (PSA_BITS_TO_BYTES(key_bits) + 5) * 3 /*without optional parts*/)
#define PSA_DSA_KEY_DOMAIN_PARAMETERS_SIZE(key_bits) \
(4 + (PSA_BITS_TO_BYTES(key_bits) + 5) * 2 /*p, g*/ + 34 /*q*/)
/**@}*/
/** \defgroup psa_tls_helpers TLS helper functions
* @{
*/
#if defined(MBEDTLS_ECP_C)
#include <mbedtls/ecp.h>
/** Convert an ECC curve identifier from the Mbed TLS encoding to PSA.
*
* \note This function is provided solely for the convenience of
* Mbed TLS and may be removed at any time without notice.
*
* \param grpid An Mbed TLS elliptic curve identifier
* (`MBEDTLS_ECP_DP_xxx`).
* \param[out] bits On success, the bit size of the curve.
*
* \return The corresponding PSA elliptic curve identifier
* (`PSA_ECC_FAMILY_xxx`).
* \return \c 0 on failure (\p grpid is not recognized).
*/
static inline psa_ecc_family_t mbedtls_ecc_group_to_psa( mbedtls_ecp_group_id grpid,
size_t *bits )
{
switch( grpid )
{
case MBEDTLS_ECP_DP_SECP192R1:
*bits = 192;
return( PSA_ECC_FAMILY_SECP_R1 );
case MBEDTLS_ECP_DP_SECP224R1:
*bits = 224;
return( PSA_ECC_FAMILY_SECP_R1 );
case MBEDTLS_ECP_DP_SECP256R1:
*bits = 256;
return( PSA_ECC_FAMILY_SECP_R1 );
case MBEDTLS_ECP_DP_SECP384R1:
*bits = 384;
return( PSA_ECC_FAMILY_SECP_R1 );
case MBEDTLS_ECP_DP_SECP521R1:
*bits = 521;
return( PSA_ECC_FAMILY_SECP_R1 );
case MBEDTLS_ECP_DP_BP256R1:
*bits = 256;
return( PSA_ECC_FAMILY_BRAINPOOL_P_R1 );
case MBEDTLS_ECP_DP_BP384R1:
*bits = 384;
return( PSA_ECC_FAMILY_BRAINPOOL_P_R1 );
case MBEDTLS_ECP_DP_BP512R1:
*bits = 512;
return( PSA_ECC_FAMILY_BRAINPOOL_P_R1 );
case MBEDTLS_ECP_DP_CURVE25519:
*bits = 255;
return( PSA_ECC_FAMILY_MONTGOMERY );
case MBEDTLS_ECP_DP_SECP192K1:
*bits = 192;
return( PSA_ECC_FAMILY_SECP_K1 );
case MBEDTLS_ECP_DP_SECP224K1:
*bits = 224;
return( PSA_ECC_FAMILY_SECP_K1 );
case MBEDTLS_ECP_DP_SECP256K1:
*bits = 256;
return( PSA_ECC_FAMILY_SECP_K1 );
case MBEDTLS_ECP_DP_CURVE448:
*bits = 448;
return( PSA_ECC_FAMILY_MONTGOMERY );
default:
*bits = 0;
return( 0 );
}
}
/** Convert an ECC curve identifier from the PSA encoding to Mbed TLS.
*
* \note This function is provided solely for the convenience of
* Mbed TLS and may be removed at any time without notice.
*
* \param curve A PSA elliptic curve identifier
* (`PSA_ECC_FAMILY_xxx`).
* \param byte_length The byte-length of a private key on \p curve.
*
* \return The corresponding Mbed TLS elliptic curve identifier
* (`MBEDTLS_ECP_DP_xxx`).
* \return #MBEDTLS_ECP_DP_NONE if \c curve is not recognized.
* \return #MBEDTLS_ECP_DP_NONE if \p byte_length is not
* correct for \p curve.
*/
mbedtls_ecp_group_id mbedtls_ecc_group_of_psa( psa_ecc_family_t curve,
size_t byte_length );
#endif /* MBEDTLS_ECP_C */
/**@}*/
#ifdef __cplusplus
}
#endif
#endif /* PSA_CRYPTO_EXTRA_H */

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@@ -0,0 +1,100 @@
/**
* \file psa/crypto_platform.h
*
* \brief PSA cryptography module: Mbed TLS platform definitions
*
* \note This file may not be included directly. Applications must
* include psa/crypto.h.
*
* This file contains platform-dependent type definitions.
*
* In implementations with isolation between the application and the
* cryptography module, implementers should take care to ensure that
* the definitions that are exposed to applications match what the
* module implements.
*/
/*
* Copyright The Mbed TLS Contributors
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef PSA_CRYPTO_PLATFORM_H
#define PSA_CRYPTO_PLATFORM_H
/* Include the Mbed TLS configuration file, the way Mbed TLS does it
* in each of its header files. */
#if !defined(MBEDTLS_CONFIG_FILE)
#include "mbedtls/config.h"
#else
#include MBEDTLS_CONFIG_FILE
#endif
/* PSA requires several types which C99 provides in stdint.h. */
#include <stdint.h>
/* Integral type representing a key handle. */
typedef uint16_t psa_key_handle_t;
/* This implementation distinguishes *application key identifiers*, which
* are the key identifiers specified by the application, from
* *key file identifiers*, which are the key identifiers that the library
* sees internally. The two types can be different if there is a remote
* call layer between the application and the library which supports
* multiple client applications that do not have access to each others'
* keys. The point of having different types is that the key file
* identifier may encode not only the key identifier specified by the
* application, but also the the identity of the application.
*
* Note that this is an internal concept of the library and the remote
* call layer. The application itself never sees anything other than
* #psa_app_key_id_t with its standard definition.
*/
/* The application key identifier is always what the application sees as
* #psa_key_id_t. */
typedef uint32_t psa_app_key_id_t;
#if defined(MBEDTLS_PSA_CRYPTO_KEY_FILE_ID_ENCODES_OWNER)
#if defined(PSA_CRYPTO_SECURE)
/* Building for the PSA Crypto service on a PSA platform. */
/* A key owner is a PSA partition identifier. */
typedef int32_t psa_key_owner_id_t;
#endif
typedef struct
{
uint32_t key_id;
psa_key_owner_id_t owner;
} psa_key_file_id_t;
#define PSA_KEY_FILE_GET_KEY_ID( file_id ) ( ( file_id ).key_id )
/* Since crypto.h is used as part of the PSA Cryptography API specification,
* it must use standard types for things like the argument of psa_open_key().
* If it wasn't for that constraint, psa_open_key() would take a
* `psa_key_file_id_t` argument. As a workaround, make `psa_key_id_t` an
* alias for `psa_key_file_id_t` when building for a multi-client service. */
typedef psa_key_file_id_t psa_key_id_t;
#define PSA_KEY_ID_INIT {0, 0}
#else /* !MBEDTLS_PSA_CRYPTO_KEY_FILE_ID_ENCODES_OWNER */
/* By default, a key file identifier is just the application key identifier. */
typedef psa_app_key_id_t psa_key_file_id_t;
#define PSA_KEY_FILE_GET_KEY_ID( id ) ( id )
#endif /* !MBEDTLS_PSA_CRYPTO_KEY_FILE_ID_ENCODES_OWNER */
#endif /* PSA_CRYPTO_PLATFORM_H */

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/**
* \file psa/crypto_sizes.h
*
* \brief PSA cryptography module: Mbed TLS buffer size macros
*
* \note This file may not be included directly. Applications must
* include psa/crypto.h.
*
* This file contains the definitions of macros that are useful to
* compute buffer sizes. The signatures and semantics of these macros
* are standardized, but the definitions are not, because they depend on
* the available algorithms and, in some cases, on permitted tolerances
* on buffer sizes.
*
* In implementations with isolation between the application and the
* cryptography module, implementers should take care to ensure that
* the definitions that are exposed to applications match what the
* module implements.
*
* Macros that compute sizes whose values do not depend on the
* implementation are in crypto.h.
*/
/*
* Copyright The Mbed TLS Contributors
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef PSA_CRYPTO_SIZES_H
#define PSA_CRYPTO_SIZES_H
/* Include the Mbed TLS configuration file, the way Mbed TLS does it
* in each of its header files. */
#if !defined(MBEDTLS_CONFIG_FILE)
#include "mbedtls/config.h"
#else
#include MBEDTLS_CONFIG_FILE
#endif
#define PSA_BITS_TO_BYTES(bits) (((bits) + 7) / 8)
#define PSA_BYTES_TO_BITS(bytes) ((bytes) * 8)
#define PSA_ROUND_UP_TO_MULTIPLE(block_size, length) \
(((length) + (block_size) - 1) / (block_size) * (block_size))
/** The size of the output of psa_hash_finish(), in bytes.
*
* This is also the hash size that psa_hash_verify() expects.
*
* \param alg A hash algorithm (\c PSA_ALG_XXX value such that
* #PSA_ALG_IS_HASH(\p alg) is true), or an HMAC algorithm
* (#PSA_ALG_HMAC(\c hash_alg) where \c hash_alg is a
* hash algorithm).
*
* \return The hash size for the specified hash algorithm.
* If the hash algorithm is not recognized, return 0.
* An implementation may return either 0 or the correct size
* for a hash algorithm that it recognizes, but does not support.
*/
#define PSA_HASH_SIZE(alg) \
( \
PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_MD2 ? 16 : \
PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_MD4 ? 16 : \
PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_MD5 ? 16 : \
PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_RIPEMD160 ? 20 : \
PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_1 ? 20 : \
PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_224 ? 28 : \
PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_256 ? 32 : \
PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_384 ? 48 : \
PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_512 ? 64 : \
PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_512_224 ? 28 : \
PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_512_256 ? 32 : \
PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA3_224 ? 28 : \
PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA3_256 ? 32 : \
PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA3_384 ? 48 : \
PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA3_512 ? 64 : \
0)
/** \def PSA_HASH_MAX_SIZE
*
* Maximum size of a hash.
*
* This macro must expand to a compile-time constant integer. This value
* should be the maximum size of a hash supported by the implementation,
* in bytes, and must be no smaller than this maximum.
*/
/* Note: for HMAC-SHA-3, the block size is 144 bytes for HMAC-SHA3-226,
* 136 bytes for HMAC-SHA3-256, 104 bytes for SHA3-384, 72 bytes for
* HMAC-SHA3-512. */
#if defined(MBEDTLS_SHA512_C)
#define PSA_HASH_MAX_SIZE 64
#define PSA_HMAC_MAX_HASH_BLOCK_SIZE 128
#else
#define PSA_HASH_MAX_SIZE 32
#define PSA_HMAC_MAX_HASH_BLOCK_SIZE 64
#endif
/** \def PSA_MAC_MAX_SIZE
*
* Maximum size of a MAC.
*
* This macro must expand to a compile-time constant integer. This value
* should be the maximum size of a MAC supported by the implementation,
* in bytes, and must be no smaller than this maximum.
*/
/* All non-HMAC MACs have a maximum size that's smaller than the
* minimum possible value of PSA_HASH_MAX_SIZE in this implementation. */
/* Note that the encoding of truncated MAC algorithms limits this value
* to 64 bytes.
*/
#define PSA_MAC_MAX_SIZE PSA_HASH_MAX_SIZE
/** The tag size for an AEAD algorithm, in bytes.
*
* \param alg An AEAD algorithm
* (\c PSA_ALG_XXX value such that
* #PSA_ALG_IS_AEAD(\p alg) is true).
*
* \return The tag size for the specified algorithm.
* If the AEAD algorithm does not have an identified
* tag that can be distinguished from the rest of
* the ciphertext, return 0.
* If the AEAD algorithm is not recognized, return 0.
* An implementation may return either 0 or a
* correct size for an AEAD algorithm that it
* recognizes, but does not support.
*/
#define PSA_AEAD_TAG_LENGTH(alg) \
(PSA_ALG_IS_AEAD(alg) ? \
(((alg) & PSA_ALG_AEAD_TAG_LENGTH_MASK) >> PSA_AEAD_TAG_LENGTH_OFFSET) : \
0)
/* The maximum size of an RSA key on this implementation, in bits.
* This is a vendor-specific macro.
*
* Mbed TLS does not set a hard limit on the size of RSA keys: any key
* whose parameters fit in a bignum is accepted. However large keys can
* induce a large memory usage and long computation times. Unlike other
* auxiliary macros in this file and in crypto.h, which reflect how the
* library is configured, this macro defines how the library is
* configured. This implementation refuses to import or generate an
* RSA key whose size is larger than the value defined here.
*
* Note that an implementation may set different size limits for different
* operations, and does not need to accept all key sizes up to the limit. */
#define PSA_VENDOR_RSA_MAX_KEY_BITS 4096
/* The maximum size of an ECC key on this implementation, in bits.
* This is a vendor-specific macro. */
#if defined(MBEDTLS_ECP_DP_SECP521R1_ENABLED)
#define PSA_VENDOR_ECC_MAX_CURVE_BITS 521
#elif defined(MBEDTLS_ECP_DP_BP512R1_ENABLED)
#define PSA_VENDOR_ECC_MAX_CURVE_BITS 512
#elif defined(MBEDTLS_ECP_DP_CURVE448_ENABLED)
#define PSA_VENDOR_ECC_MAX_CURVE_BITS 448
#elif defined(MBEDTLS_ECP_DP_SECP384R1_ENABLED)
#define PSA_VENDOR_ECC_MAX_CURVE_BITS 384
#elif defined(MBEDTLS_ECP_DP_BP384R1_ENABLED)
#define PSA_VENDOR_ECC_MAX_CURVE_BITS 384
#elif defined(MBEDTLS_ECP_DP_SECP256R1_ENABLED)
#define PSA_VENDOR_ECC_MAX_CURVE_BITS 256
#elif defined(MBEDTLS_ECP_DP_SECP256K1_ENABLED)
#define PSA_VENDOR_ECC_MAX_CURVE_BITS 256
#elif defined(MBEDTLS_ECP_DP_BP256R1_ENABLED)
#define PSA_VENDOR_ECC_MAX_CURVE_BITS 256
#elif defined(MBEDTLS_ECP_DP_CURVE25519_ENABLED)
#define PSA_VENDOR_ECC_MAX_CURVE_BITS 255
#elif defined(MBEDTLS_ECP_DP_SECP224R1_ENABLED)
#define PSA_VENDOR_ECC_MAX_CURVE_BITS 224
#elif defined(MBEDTLS_ECP_DP_SECP224K1_ENABLED)
#define PSA_VENDOR_ECC_MAX_CURVE_BITS 224
#elif defined(MBEDTLS_ECP_DP_SECP192R1_ENABLED)
#define PSA_VENDOR_ECC_MAX_CURVE_BITS 192
#elif defined(MBEDTLS_ECP_DP_SECP192K1_ENABLED)
#define PSA_VENDOR_ECC_MAX_CURVE_BITS 192
#else
#define PSA_VENDOR_ECC_MAX_CURVE_BITS 0
#endif
/** \def PSA_ALG_TLS12_PSK_TO_MS_MAX_PSK_LEN
*
* This macro returns the maximum length of the PSK supported
* by the TLS-1.2 PSK-to-MS key derivation.
*
* Quoting RFC 4279, Sect 5.3:
* TLS implementations supporting these ciphersuites MUST support
* arbitrary PSK identities up to 128 octets in length, and arbitrary
* PSKs up to 64 octets in length. Supporting longer identities and
* keys is RECOMMENDED.
*
* Therefore, no implementation should define a value smaller than 64
* for #PSA_ALG_TLS12_PSK_TO_MS_MAX_PSK_LEN.
*/
#define PSA_ALG_TLS12_PSK_TO_MS_MAX_PSK_LEN 128
/** The maximum size of a block cipher supported by the implementation. */
#define PSA_MAX_BLOCK_CIPHER_BLOCK_SIZE 16
/** The size of the output of psa_mac_sign_finish(), in bytes.
*
* This is also the MAC size that psa_mac_verify_finish() expects.
*
* \param key_type The type of the MAC key.
* \param key_bits The size of the MAC key in bits.
* \param alg A MAC algorithm (\c PSA_ALG_XXX value such that
* #PSA_ALG_IS_MAC(\p alg) is true).
*
* \return The MAC size for the specified algorithm with
* the specified key parameters.
* \return 0 if the MAC algorithm is not recognized.
* \return Either 0 or the correct size for a MAC algorithm that
* the implementation recognizes, but does not support.
* \return Unspecified if the key parameters are not consistent
* with the algorithm.
*/
#define PSA_MAC_FINAL_SIZE(key_type, key_bits, alg) \
((alg) & PSA_ALG_MAC_TRUNCATION_MASK ? PSA_MAC_TRUNCATED_LENGTH(alg) : \
PSA_ALG_IS_HMAC(alg) ? PSA_HASH_SIZE(PSA_ALG_HMAC_GET_HASH(alg)) : \
PSA_ALG_IS_BLOCK_CIPHER_MAC(alg) ? PSA_BLOCK_CIPHER_BLOCK_SIZE(key_type) : \
((void)(key_type), (void)(key_bits), 0))
/** The maximum size of the output of psa_aead_encrypt(), in bytes.
*
* If the size of the ciphertext buffer is at least this large, it is
* guaranteed that psa_aead_encrypt() will not fail due to an
* insufficient buffer size. Depending on the algorithm, the actual size of
* the ciphertext may be smaller.
*
* \param alg An AEAD algorithm
* (\c PSA_ALG_XXX value such that
* #PSA_ALG_IS_AEAD(\p alg) is true).
* \param plaintext_length Size of the plaintext in bytes.
*
* \return The AEAD ciphertext size for the specified
* algorithm.
* If the AEAD algorithm is not recognized, return 0.
* An implementation may return either 0 or a
* correct size for an AEAD algorithm that it
* recognizes, but does not support.
*/
#define PSA_AEAD_ENCRYPT_OUTPUT_SIZE(alg, plaintext_length) \
(PSA_AEAD_TAG_LENGTH(alg) != 0 ? \
(plaintext_length) + PSA_AEAD_TAG_LENGTH(alg) : \
0)
/** The maximum size of the output of psa_aead_decrypt(), in bytes.
*
* If the size of the plaintext buffer is at least this large, it is
* guaranteed that psa_aead_decrypt() will not fail due to an
* insufficient buffer size. Depending on the algorithm, the actual size of
* the plaintext may be smaller.
*
* \param alg An AEAD algorithm
* (\c PSA_ALG_XXX value such that
* #PSA_ALG_IS_AEAD(\p alg) is true).
* \param ciphertext_length Size of the plaintext in bytes.
*
* \return The AEAD ciphertext size for the specified
* algorithm.
* If the AEAD algorithm is not recognized, return 0.
* An implementation may return either 0 or a
* correct size for an AEAD algorithm that it
* recognizes, but does not support.
*/
#define PSA_AEAD_DECRYPT_OUTPUT_SIZE(alg, ciphertext_length) \
(PSA_AEAD_TAG_LENGTH(alg) != 0 ? \
(ciphertext_length) - PSA_AEAD_TAG_LENGTH(alg) : \
0)
/** A sufficient output buffer size for psa_aead_update().
*
* If the size of the output buffer is at least this large, it is
* guaranteed that psa_aead_update() will not fail due to an
* insufficient buffer size. The actual size of the output may be smaller
* in any given call.
*
* \param alg An AEAD algorithm
* (\c PSA_ALG_XXX value such that
* #PSA_ALG_IS_AEAD(\p alg) is true).
* \param input_length Size of the input in bytes.
*
* \return A sufficient output buffer size for the specified
* algorithm.
* If the AEAD algorithm is not recognized, return 0.
* An implementation may return either 0 or a
* correct size for an AEAD algorithm that it
* recognizes, but does not support.
*/
/* For all the AEAD modes defined in this specification, it is possible
* to emit output without delay. However, hardware may not always be
* capable of this. So for modes based on a block cipher, allow the
* implementation to delay the output until it has a full block. */
#define PSA_AEAD_UPDATE_OUTPUT_SIZE(alg, input_length) \
(PSA_ALG_IS_AEAD_ON_BLOCK_CIPHER(alg) ? \
PSA_ROUND_UP_TO_MULTIPLE(PSA_MAX_BLOCK_CIPHER_BLOCK_SIZE, (input_length)) : \
(input_length))
/** A sufficient ciphertext buffer size for psa_aead_finish().
*
* If the size of the ciphertext buffer is at least this large, it is
* guaranteed that psa_aead_finish() will not fail due to an
* insufficient ciphertext buffer size. The actual size of the output may
* be smaller in any given call.
*
* \param alg An AEAD algorithm
* (\c PSA_ALG_XXX value such that
* #PSA_ALG_IS_AEAD(\p alg) is true).
*
* \return A sufficient ciphertext buffer size for the
* specified algorithm.
* If the AEAD algorithm is not recognized, return 0.
* An implementation may return either 0 or a
* correct size for an AEAD algorithm that it
* recognizes, but does not support.
*/
#define PSA_AEAD_FINISH_OUTPUT_SIZE(alg) \
(PSA_ALG_IS_AEAD_ON_BLOCK_CIPHER(alg) ? \
PSA_MAX_BLOCK_CIPHER_BLOCK_SIZE : \
0)
/** A sufficient plaintext buffer size for psa_aead_verify().
*
* If the size of the plaintext buffer is at least this large, it is
* guaranteed that psa_aead_verify() will not fail due to an
* insufficient plaintext buffer size. The actual size of the output may
* be smaller in any given call.
*
* \param alg An AEAD algorithm
* (\c PSA_ALG_XXX value such that
* #PSA_ALG_IS_AEAD(\p alg) is true).
*
* \return A sufficient plaintext buffer size for the
* specified algorithm.
* If the AEAD algorithm is not recognized, return 0.
* An implementation may return either 0 or a
* correct size for an AEAD algorithm that it
* recognizes, but does not support.
*/
#define PSA_AEAD_VERIFY_OUTPUT_SIZE(alg) \
(PSA_ALG_IS_AEAD_ON_BLOCK_CIPHER(alg) ? \
PSA_MAX_BLOCK_CIPHER_BLOCK_SIZE : \
0)
#define PSA_RSA_MINIMUM_PADDING_SIZE(alg) \
(PSA_ALG_IS_RSA_OAEP(alg) ? \
2 * PSA_HASH_SIZE(PSA_ALG_RSA_OAEP_GET_HASH(alg)) + 1 : \
11 /*PKCS#1v1.5*/)
/**
* \brief ECDSA signature size for a given curve bit size
*
* \param curve_bits Curve size in bits.
* \return Signature size in bytes.
*
* \note This macro returns a compile-time constant if its argument is one.
*/
#define PSA_ECDSA_SIGNATURE_SIZE(curve_bits) \
(PSA_BITS_TO_BYTES(curve_bits) * 2)
/** Sufficient signature buffer size for psa_sign_hash().
*
* This macro returns a sufficient buffer size for a signature using a key
* of the specified type and size, with the specified algorithm.
* Note that the actual size of the signature may be smaller
* (some algorithms produce a variable-size signature).
*
* \warning This function may call its arguments multiple times or
* zero times, so you should not pass arguments that contain
* side effects.
*
* \param key_type An asymmetric key type (this may indifferently be a
* key pair type or a public key type).
* \param key_bits The size of the key in bits.
* \param alg The signature algorithm.
*
* \return If the parameters are valid and supported, return
* a buffer size in bytes that guarantees that
* psa_sign_hash() will not fail with
* #PSA_ERROR_BUFFER_TOO_SMALL.
* If the parameters are a valid combination that is not supported
* by the implementation, this macro shall return either a
* sensible size or 0.
* If the parameters are not valid, the
* return value is unspecified.
*/
#define PSA_SIGN_OUTPUT_SIZE(key_type, key_bits, alg) \
(PSA_KEY_TYPE_IS_RSA(key_type) ? ((void)alg, PSA_BITS_TO_BYTES(key_bits)) : \
PSA_KEY_TYPE_IS_ECC(key_type) ? PSA_ECDSA_SIGNATURE_SIZE(key_bits) : \
((void)alg, 0))
#define PSA_VENDOR_ECDSA_SIGNATURE_MAX_SIZE \
PSA_ECDSA_SIGNATURE_SIZE(PSA_VENDOR_ECC_MAX_CURVE_BITS)
/** \def PSA_SIGNATURE_MAX_SIZE
*
* Maximum size of an asymmetric signature.
*
* This macro must expand to a compile-time constant integer. This value
* should be the maximum size of a signature supported by the implementation,
* in bytes, and must be no smaller than this maximum.
*/
#define PSA_SIGNATURE_MAX_SIZE \
(PSA_BITS_TO_BYTES(PSA_VENDOR_RSA_MAX_KEY_BITS) > PSA_VENDOR_ECDSA_SIGNATURE_MAX_SIZE ? \
PSA_BITS_TO_BYTES(PSA_VENDOR_RSA_MAX_KEY_BITS) : \
PSA_VENDOR_ECDSA_SIGNATURE_MAX_SIZE)
/** Sufficient output buffer size for psa_asymmetric_encrypt().
*
* This macro returns a sufficient buffer size for a ciphertext produced using
* a key of the specified type and size, with the specified algorithm.
* Note that the actual size of the ciphertext may be smaller, depending
* on the algorithm.
*
* \warning This function may call its arguments multiple times or
* zero times, so you should not pass arguments that contain
* side effects.
*
* \param key_type An asymmetric key type (this may indifferently be a
* key pair type or a public key type).
* \param key_bits The size of the key in bits.
* \param alg The asymmetric encryption algorithm.
*
* \return If the parameters are valid and supported, return
* a buffer size in bytes that guarantees that
* psa_asymmetric_encrypt() will not fail with
* #PSA_ERROR_BUFFER_TOO_SMALL.
* If the parameters are a valid combination that is not supported
* by the implementation, this macro shall return either a
* sensible size or 0.
* If the parameters are not valid, the
* return value is unspecified.
*/
#define PSA_ASYMMETRIC_ENCRYPT_OUTPUT_SIZE(key_type, key_bits, alg) \
(PSA_KEY_TYPE_IS_RSA(key_type) ? \
((void)alg, PSA_BITS_TO_BYTES(key_bits)) : \
0)
/** Sufficient output buffer size for psa_asymmetric_decrypt().
*
* This macro returns a sufficient buffer size for a plaintext produced using
* a key of the specified type and size, with the specified algorithm.
* Note that the actual size of the plaintext may be smaller, depending
* on the algorithm.
*
* \warning This function may call its arguments multiple times or
* zero times, so you should not pass arguments that contain
* side effects.
*
* \param key_type An asymmetric key type (this may indifferently be a
* key pair type or a public key type).
* \param key_bits The size of the key in bits.
* \param alg The asymmetric encryption algorithm.
*
* \return If the parameters are valid and supported, return
* a buffer size in bytes that guarantees that
* psa_asymmetric_decrypt() will not fail with
* #PSA_ERROR_BUFFER_TOO_SMALL.
* If the parameters are a valid combination that is not supported
* by the implementation, this macro shall return either a
* sensible size or 0.
* If the parameters are not valid, the
* return value is unspecified.
*/
#define PSA_ASYMMETRIC_DECRYPT_OUTPUT_SIZE(key_type, key_bits, alg) \
(PSA_KEY_TYPE_IS_RSA(key_type) ? \
PSA_BITS_TO_BYTES(key_bits) - PSA_RSA_MINIMUM_PADDING_SIZE(alg) : \
0)
/* Maximum size of the ASN.1 encoding of an INTEGER with the specified
* number of bits.
*
* This definition assumes that bits <= 2^19 - 9 so that the length field
* is at most 3 bytes. The length of the encoding is the length of the
* bit string padded to a whole number of bytes plus:
* - 1 type byte;
* - 1 to 3 length bytes;
* - 0 to 1 bytes of leading 0 due to the sign bit.
*/
#define PSA_KEY_EXPORT_ASN1_INTEGER_MAX_SIZE(bits) \
((bits) / 8 + 5)
/* Maximum size of the export encoding of an RSA public key.
* Assumes that the public exponent is less than 2^32.
*
* RSAPublicKey ::= SEQUENCE {
* modulus INTEGER, -- n
* publicExponent INTEGER } -- e
*
* - 4 bytes of SEQUENCE overhead;
* - n : INTEGER;
* - 7 bytes for the public exponent.
*/
#define PSA_KEY_EXPORT_RSA_PUBLIC_KEY_MAX_SIZE(key_bits) \
(PSA_KEY_EXPORT_ASN1_INTEGER_MAX_SIZE(key_bits) + 11)
/* Maximum size of the export encoding of an RSA key pair.
* Assumes thatthe public exponent is less than 2^32 and that the size
* difference between the two primes is at most 1 bit.
*
* RSAPrivateKey ::= SEQUENCE {
* version Version, -- 0
* modulus INTEGER, -- N-bit
* publicExponent INTEGER, -- 32-bit
* privateExponent INTEGER, -- N-bit
* prime1 INTEGER, -- N/2-bit
* prime2 INTEGER, -- N/2-bit
* exponent1 INTEGER, -- N/2-bit
* exponent2 INTEGER, -- N/2-bit
* coefficient INTEGER, -- N/2-bit
* }
*
* - 4 bytes of SEQUENCE overhead;
* - 3 bytes of version;
* - 7 half-size INTEGERs plus 2 full-size INTEGERs,
* overapproximated as 9 half-size INTEGERS;
* - 7 bytes for the public exponent.
*/
#define PSA_KEY_EXPORT_RSA_KEY_PAIR_MAX_SIZE(key_bits) \
(9 * PSA_KEY_EXPORT_ASN1_INTEGER_MAX_SIZE((key_bits) / 2 + 1) + 14)
/* Maximum size of the export encoding of a DSA public key.
*
* SubjectPublicKeyInfo ::= SEQUENCE {
* algorithm AlgorithmIdentifier,
* subjectPublicKey BIT STRING } -- contains DSAPublicKey
* AlgorithmIdentifier ::= SEQUENCE {
* algorithm OBJECT IDENTIFIER,
* parameters Dss-Parms } -- SEQUENCE of 3 INTEGERs
* DSAPublicKey ::= INTEGER -- public key, Y
*
* - 3 * 4 bytes of SEQUENCE overhead;
* - 1 + 1 + 7 bytes of algorithm (DSA OID);
* - 4 bytes of BIT STRING overhead;
* - 3 full-size INTEGERs (p, g, y);
* - 1 + 1 + 32 bytes for 1 sub-size INTEGER (q <= 256 bits).
*/
#define PSA_KEY_EXPORT_DSA_PUBLIC_KEY_MAX_SIZE(key_bits) \
(PSA_KEY_EXPORT_ASN1_INTEGER_MAX_SIZE(key_bits) * 3 + 59)
/* Maximum size of the export encoding of a DSA key pair.
*
* DSAPrivateKey ::= SEQUENCE {
* version Version, -- 0
* prime INTEGER, -- p
* subprime INTEGER, -- q
* generator INTEGER, -- g
* public INTEGER, -- y
* private INTEGER, -- x
* }
*
* - 4 bytes of SEQUENCE overhead;
* - 3 bytes of version;
* - 3 full-size INTEGERs (p, g, y);
* - 2 * (1 + 1 + 32) bytes for 2 sub-size INTEGERs (q, x <= 256 bits).
*/
#define PSA_KEY_EXPORT_DSA_KEY_PAIR_MAX_SIZE(key_bits) \
(PSA_KEY_EXPORT_ASN1_INTEGER_MAX_SIZE(key_bits) * 3 + 75)
/* Maximum size of the export encoding of an ECC public key.
*
* The representation of an ECC public key is:
* - The byte 0x04;
* - `x_P` as a `ceiling(m/8)`-byte string, big-endian;
* - `y_P` as a `ceiling(m/8)`-byte string, big-endian;
* - where m is the bit size associated with the curve.
*
* - 1 byte + 2 * point size.
*/
#define PSA_KEY_EXPORT_ECC_PUBLIC_KEY_MAX_SIZE(key_bits) \
(2 * PSA_BITS_TO_BYTES(key_bits) + 1)
/* Maximum size of the export encoding of an ECC key pair.
*
* An ECC key pair is represented by the secret value.
*/
#define PSA_KEY_EXPORT_ECC_KEY_PAIR_MAX_SIZE(key_bits) \
(PSA_BITS_TO_BYTES(key_bits))
/** Sufficient output buffer size for psa_export_key() or psa_export_public_key().
*
* This macro returns a compile-time constant if its arguments are
* compile-time constants.
*
* \warning This function may call its arguments multiple times or
* zero times, so you should not pass arguments that contain
* side effects.
*
* The following code illustrates how to allocate enough memory to export
* a key by querying the key type and size at runtime.
* \code{c}
* psa_key_attributes_t attributes = PSA_KEY_ATTRIBUTES_INIT;
* psa_status_t status;
* status = psa_get_key_attributes(key, &attributes);
* if (status != PSA_SUCCESS) handle_error(...);
* psa_key_type_t key_type = psa_get_key_type(&attributes);
* size_t key_bits = psa_get_key_bits(&attributes);
* size_t buffer_size = PSA_KEY_EXPORT_MAX_SIZE(key_type, key_bits);
* psa_reset_key_attributes(&attributes);
* uint8_t *buffer = malloc(buffer_size);
* if (buffer == NULL) handle_error(...);
* size_t buffer_length;
* status = psa_export_key(key, buffer, buffer_size, &buffer_length);
* if (status != PSA_SUCCESS) handle_error(...);
* \endcode
*
* For psa_export_public_key(), calculate the buffer size from the
* public key type. You can use the macro #PSA_KEY_TYPE_PUBLIC_KEY_OF_KEY_PAIR
* to convert a key pair type to the corresponding public key type.
* \code{c}
* psa_key_attributes_t attributes = PSA_KEY_ATTRIBUTES_INIT;
* psa_status_t status;
* status = psa_get_key_attributes(key, &attributes);
* if (status != PSA_SUCCESS) handle_error(...);
* psa_key_type_t key_type = psa_get_key_type(&attributes);
* psa_key_type_t public_key_type = PSA_KEY_TYPE_PUBLIC_KEY_OF_KEY_PAIR(key_type);
* size_t key_bits = psa_get_key_bits(&attributes);
* size_t buffer_size = PSA_KEY_EXPORT_MAX_SIZE(public_key_type, key_bits);
* psa_reset_key_attributes(&attributes);
* uint8_t *buffer = malloc(buffer_size);
* if (buffer == NULL) handle_error(...);
* size_t buffer_length;
* status = psa_export_public_key(key, buffer, buffer_size, &buffer_length);
* if (status != PSA_SUCCESS) handle_error(...);
* \endcode
*
* \param key_type A supported key type.
* \param key_bits The size of the key in bits.
*
* \return If the parameters are valid and supported, return
* a buffer size in bytes that guarantees that
* psa_sign_hash() will not fail with
* #PSA_ERROR_BUFFER_TOO_SMALL.
* If the parameters are a valid combination that is not supported
* by the implementation, this macro shall return either a
* sensible size or 0.
* If the parameters are not valid, the
* return value is unspecified.
*/
#define PSA_KEY_EXPORT_MAX_SIZE(key_type, key_bits) \
(PSA_KEY_TYPE_IS_UNSTRUCTURED(key_type) ? PSA_BITS_TO_BYTES(key_bits) : \
(key_type) == PSA_KEY_TYPE_RSA_KEY_PAIR ? PSA_KEY_EXPORT_RSA_KEY_PAIR_MAX_SIZE(key_bits) : \
(key_type) == PSA_KEY_TYPE_RSA_PUBLIC_KEY ? PSA_KEY_EXPORT_RSA_PUBLIC_KEY_MAX_SIZE(key_bits) : \
(key_type) == PSA_KEY_TYPE_DSA_KEY_PAIR ? PSA_KEY_EXPORT_DSA_KEY_PAIR_MAX_SIZE(key_bits) : \
(key_type) == PSA_KEY_TYPE_DSA_PUBLIC_KEY ? PSA_KEY_EXPORT_DSA_PUBLIC_KEY_MAX_SIZE(key_bits) : \
PSA_KEY_TYPE_IS_ECC_KEY_PAIR(key_type) ? PSA_KEY_EXPORT_ECC_KEY_PAIR_MAX_SIZE(key_bits) : \
PSA_KEY_TYPE_IS_ECC_PUBLIC_KEY(key_type) ? PSA_KEY_EXPORT_ECC_PUBLIC_KEY_MAX_SIZE(key_bits) : \
0)
#endif /* PSA_CRYPTO_SIZES_H */

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/**
* \file psa/crypto_struct.h
*
* \brief PSA cryptography module: Mbed TLS structured type implementations
*
* \note This file may not be included directly. Applications must
* include psa/crypto.h.
*
* This file contains the definitions of some data structures with
* implementation-specific definitions.
*
* In implementations with isolation between the application and the
* cryptography module, it is expected that the front-end and the back-end
* would have different versions of this file.
*
* <h3>Design notes about multipart operation structures</h3>
*
* Each multipart operation structure contains a `psa_algorithm_t alg`
* field which indicates which specific algorithm the structure is for.
* When the structure is not in use, `alg` is 0. Most of the structure
* consists of a union which is discriminated by `alg`.
*
* Note that when `alg` is 0, the content of other fields is undefined.
* In particular, it is not guaranteed that a freshly-initialized structure
* is all-zero: we initialize structures to something like `{0, 0}`, which
* is only guaranteed to initializes the first member of the union;
* GCC and Clang initialize the whole structure to 0 (at the time of writing),
* but MSVC and CompCert don't.
*
* In Mbed Crypto, multipart operation structures live independently from
* the key. This allows Mbed Crypto to free the key objects when destroying
* a key slot. If a multipart operation needs to remember the key after
* the setup function returns, the operation structure needs to contain a
* copy of the key.
*/
/*
* Copyright The Mbed TLS Contributors
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef PSA_CRYPTO_STRUCT_H
#define PSA_CRYPTO_STRUCT_H
#ifdef __cplusplus
extern "C" {
#endif
/* Include the Mbed TLS configuration file, the way Mbed TLS does it
* in each of its header files. */
#if !defined(MBEDTLS_CONFIG_FILE)
#include "mbedtls/config.h"
#else
#include MBEDTLS_CONFIG_FILE
#endif
#include "mbedtls/cipher.h"
#include "mbedtls/cmac.h"
#include "mbedtls/gcm.h"
#include "mbedtls/md.h"
#include "mbedtls/md2.h"
#include "mbedtls/md4.h"
#include "mbedtls/md5.h"
#include "mbedtls/ripemd160.h"
#include "mbedtls/sha1.h"
#include "mbedtls/sha256.h"
#include "mbedtls/sha512.h"
struct psa_hash_operation_s
{
psa_algorithm_t alg;
union
{
unsigned dummy; /* Make the union non-empty even with no supported algorithms. */
#if defined(MBEDTLS_MD2_C)
mbedtls_md2_context md2;
#endif
#if defined(MBEDTLS_MD4_C)
mbedtls_md4_context md4;
#endif
#if defined(MBEDTLS_MD5_C)
mbedtls_md5_context md5;
#endif
#if defined(MBEDTLS_RIPEMD160_C)
mbedtls_ripemd160_context ripemd160;
#endif
#if defined(MBEDTLS_SHA1_C)
mbedtls_sha1_context sha1;
#endif
#if defined(MBEDTLS_SHA256_C)
mbedtls_sha256_context sha256;
#endif
#if defined(MBEDTLS_SHA512_C)
mbedtls_sha512_context sha512;
#endif
} ctx;
};
#define PSA_HASH_OPERATION_INIT {0, {0}}
static inline struct psa_hash_operation_s psa_hash_operation_init( void )
{
const struct psa_hash_operation_s v = PSA_HASH_OPERATION_INIT;
return( v );
}
#if defined(MBEDTLS_MD_C)
typedef struct
{
/** The hash context. */
struct psa_hash_operation_s hash_ctx;
/** The HMAC part of the context. */
uint8_t opad[PSA_HMAC_MAX_HASH_BLOCK_SIZE];
} psa_hmac_internal_data;
#endif /* MBEDTLS_MD_C */
struct psa_mac_operation_s
{
psa_algorithm_t alg;
unsigned int key_set : 1;
unsigned int iv_required : 1;
unsigned int iv_set : 1;
unsigned int has_input : 1;
unsigned int is_sign : 1;
uint8_t mac_size;
union
{
unsigned dummy; /* Make the union non-empty even with no supported algorithms. */
#if defined(MBEDTLS_MD_C)
psa_hmac_internal_data hmac;
#endif
#if defined(MBEDTLS_CMAC_C)
mbedtls_cipher_context_t cmac;
#endif
} ctx;
};
#define PSA_MAC_OPERATION_INIT {0, 0, 0, 0, 0, 0, 0, {0}}
static inline struct psa_mac_operation_s psa_mac_operation_init( void )
{
const struct psa_mac_operation_s v = PSA_MAC_OPERATION_INIT;
return( v );
}
struct psa_cipher_operation_s
{
psa_algorithm_t alg;
unsigned int key_set : 1;
unsigned int iv_required : 1;
unsigned int iv_set : 1;
uint8_t iv_size;
uint8_t block_size;
union
{
unsigned dummy; /* Enable easier initializing of the union. */
mbedtls_cipher_context_t cipher;
} ctx;
};
#define PSA_CIPHER_OPERATION_INIT {0, 0, 0, 0, 0, 0, {0}}
static inline struct psa_cipher_operation_s psa_cipher_operation_init( void )
{
const struct psa_cipher_operation_s v = PSA_CIPHER_OPERATION_INIT;
return( v );
}
struct psa_aead_operation_s
{
psa_algorithm_t alg;
unsigned int key_set : 1;
unsigned int iv_set : 1;
uint8_t iv_size;
uint8_t block_size;
union
{
unsigned dummy; /* Enable easier initializing of the union. */
mbedtls_cipher_context_t cipher;
} ctx;
};
#define PSA_AEAD_OPERATION_INIT {0, 0, 0, 0, 0, {0}}
static inline struct psa_aead_operation_s psa_aead_operation_init( void )
{
const struct psa_aead_operation_s v = PSA_AEAD_OPERATION_INIT;
return( v );
}
#if defined(MBEDTLS_MD_C)
typedef struct
{
uint8_t *info;
size_t info_length;
psa_hmac_internal_data hmac;
uint8_t prk[PSA_HASH_MAX_SIZE];
uint8_t output_block[PSA_HASH_MAX_SIZE];
#if PSA_HASH_MAX_SIZE > 0xff
#error "PSA_HASH_MAX_SIZE does not fit in uint8_t"
#endif
uint8_t offset_in_block;
uint8_t block_number;
unsigned int state : 2;
unsigned int info_set : 1;
} psa_hkdf_key_derivation_t;
#endif /* MBEDTLS_MD_C */
#if defined(MBEDTLS_MD_C)
typedef enum
{
TLS12_PRF_STATE_INIT, /* no input provided */
TLS12_PRF_STATE_SEED_SET, /* seed has been set */
TLS12_PRF_STATE_KEY_SET, /* key has been set */
TLS12_PRF_STATE_LABEL_SET, /* label has been set */
TLS12_PRF_STATE_OUTPUT /* output has been started */
} psa_tls12_prf_key_derivation_state_t;
typedef struct psa_tls12_prf_key_derivation_s
{
#if PSA_HASH_MAX_SIZE > 0xff
#error "PSA_HASH_MAX_SIZE does not fit in uint8_t"
#endif
/* Indicates how many bytes in the current HMAC block have
* not yet been read by the user. */
uint8_t left_in_block;
/* The 1-based number of the block. */
uint8_t block_number;
psa_tls12_prf_key_derivation_state_t state;
uint8_t *seed;
size_t seed_length;
uint8_t *label;
size_t label_length;
psa_hmac_internal_data hmac;
uint8_t Ai[PSA_HASH_MAX_SIZE];
/* `HMAC_hash( prk, A(i) + seed )` in the notation of RFC 5246, Sect. 5. */
uint8_t output_block[PSA_HASH_MAX_SIZE];
} psa_tls12_prf_key_derivation_t;
#endif /* MBEDTLS_MD_C */
struct psa_key_derivation_s
{
psa_algorithm_t alg;
unsigned int can_output_key : 1;
size_t capacity;
union
{
/* Make the union non-empty even with no supported algorithms. */
uint8_t dummy;
#if defined(MBEDTLS_MD_C)
psa_hkdf_key_derivation_t hkdf;
psa_tls12_prf_key_derivation_t tls12_prf;
#endif
} ctx;
};
/* This only zeroes out the first byte in the union, the rest is unspecified. */
#define PSA_KEY_DERIVATION_OPERATION_INIT {0, 0, 0, {0}}
static inline struct psa_key_derivation_s psa_key_derivation_operation_init( void )
{
const struct psa_key_derivation_s v = PSA_KEY_DERIVATION_OPERATION_INIT;
return( v );
}
struct psa_key_policy_s
{
psa_key_usage_t usage;
psa_algorithm_t alg;
psa_algorithm_t alg2;
};
typedef struct psa_key_policy_s psa_key_policy_t;
#define PSA_KEY_POLICY_INIT {0, 0, 0}
static inline struct psa_key_policy_s psa_key_policy_init( void )
{
const struct psa_key_policy_s v = PSA_KEY_POLICY_INIT;
return( v );
}
/* The type used internally for key sizes.
* Public interfaces use size_t, but internally we use a smaller type. */
typedef uint16_t psa_key_bits_t;
/* The maximum value of the type used to represent bit-sizes.
* This is used to mark an invalid key size. */
#define PSA_KEY_BITS_TOO_LARGE ( (psa_key_bits_t) ( -1 ) )
/* The maximum size of a key in bits.
* Currently defined as the maximum that can be represented, rounded down
* to a whole number of bytes.
* This is an uncast value so that it can be used in preprocessor
* conditionals. */
#define PSA_MAX_KEY_BITS 0xfff8
/** A mask of flags that can be stored in key attributes.
*
* This type is also used internally to store flags in slots. Internal
* flags are defined in library/psa_crypto_core.h. Internal flags may have
* the same value as external flags if they are properly handled during
* key creation and in psa_get_key_attributes.
*/
typedef uint16_t psa_key_attributes_flag_t;
#define MBEDTLS_PSA_KA_FLAG_HAS_SLOT_NUMBER \
( (psa_key_attributes_flag_t) 0x0001 )
/* A mask of key attribute flags used externally only.
* Only meant for internal checks inside the library. */
#define MBEDTLS_PSA_KA_MASK_EXTERNAL_ONLY ( \
MBEDTLS_PSA_KA_FLAG_HAS_SLOT_NUMBER | \
0 )
/* A mask of key attribute flags used both internally and externally.
* Currently there aren't any. */
#define MBEDTLS_PSA_KA_MASK_DUAL_USE ( \
0 )
typedef struct
{
psa_key_type_t type;
psa_key_bits_t bits;
psa_key_lifetime_t lifetime;
psa_key_id_t id;
psa_key_policy_t policy;
psa_key_attributes_flag_t flags;
} psa_core_key_attributes_t;
#define PSA_CORE_KEY_ATTRIBUTES_INIT {PSA_KEY_TYPE_NONE, 0, PSA_KEY_LIFETIME_VOLATILE, PSA_KEY_ID_INIT, PSA_KEY_POLICY_INIT, 0}
struct psa_key_attributes_s
{
psa_core_key_attributes_t core;
#if defined(MBEDTLS_PSA_CRYPTO_SE_C)
psa_key_slot_number_t slot_number;
#endif /* MBEDTLS_PSA_CRYPTO_SE_C */
void *domain_parameters;
size_t domain_parameters_size;
};
#if defined(MBEDTLS_PSA_CRYPTO_SE_C)
#define PSA_KEY_ATTRIBUTES_INIT {PSA_CORE_KEY_ATTRIBUTES_INIT, 0, NULL, 0}
#else
#define PSA_KEY_ATTRIBUTES_INIT {PSA_CORE_KEY_ATTRIBUTES_INIT, NULL, 0}
#endif
static inline struct psa_key_attributes_s psa_key_attributes_init( void )
{
const struct psa_key_attributes_s v = PSA_KEY_ATTRIBUTES_INIT;
return( v );
}
static inline void psa_set_key_id(psa_key_attributes_t *attributes,
psa_key_id_t id)
{
attributes->core.id = id;
if( attributes->core.lifetime == PSA_KEY_LIFETIME_VOLATILE )
attributes->core.lifetime = PSA_KEY_LIFETIME_PERSISTENT;
}
static inline psa_key_id_t psa_get_key_id(
const psa_key_attributes_t *attributes)
{
return( attributes->core.id );
}
static inline void psa_set_key_lifetime(psa_key_attributes_t *attributes,
psa_key_lifetime_t lifetime)
{
attributes->core.lifetime = lifetime;
if( lifetime == PSA_KEY_LIFETIME_VOLATILE )
{
#ifdef MBEDTLS_PSA_CRYPTO_KEY_FILE_ID_ENCODES_OWNER
attributes->core.id.key_id = 0;
attributes->core.id.owner = 0;
#else
attributes->core.id = 0;
#endif
}
}
static inline psa_key_lifetime_t psa_get_key_lifetime(
const psa_key_attributes_t *attributes)
{
return( attributes->core.lifetime );
}
static inline void psa_set_key_usage_flags(psa_key_attributes_t *attributes,
psa_key_usage_t usage_flags)
{
attributes->core.policy.usage = usage_flags;
}
static inline psa_key_usage_t psa_get_key_usage_flags(
const psa_key_attributes_t *attributes)
{
return( attributes->core.policy.usage );
}
static inline void psa_set_key_algorithm(psa_key_attributes_t *attributes,
psa_algorithm_t alg)
{
attributes->core.policy.alg = alg;
}
static inline psa_algorithm_t psa_get_key_algorithm(
const psa_key_attributes_t *attributes)
{
return( attributes->core.policy.alg );
}
/* This function is declared in crypto_extra.h, which comes after this
* header file, but we need the function here, so repeat the declaration. */
psa_status_t psa_set_key_domain_parameters(psa_key_attributes_t *attributes,
psa_key_type_t type,
const uint8_t *data,
size_t data_length);
static inline void psa_set_key_type(psa_key_attributes_t *attributes,
psa_key_type_t type)
{
if( attributes->domain_parameters == NULL )
{
/* Common case: quick path */
attributes->core.type = type;
}
else
{
/* Call the bigger function to free the old domain paramteres.
* Ignore any errors which may arise due to type requiring
* non-default domain parameters, since this function can't
* report errors. */
(void) psa_set_key_domain_parameters( attributes, type, NULL, 0 );
}
}
static inline psa_key_type_t psa_get_key_type(
const psa_key_attributes_t *attributes)
{
return( attributes->core.type );
}
static inline void psa_set_key_bits(psa_key_attributes_t *attributes,
size_t bits)
{
if( bits > PSA_MAX_KEY_BITS )
attributes->core.bits = PSA_KEY_BITS_TOO_LARGE;
else
attributes->core.bits = (psa_key_bits_t) bits;
}
static inline size_t psa_get_key_bits(
const psa_key_attributes_t *attributes)
{
return( attributes->core.bits );
}
#ifdef __cplusplus
}
#endif
#endif /* PSA_CRYPTO_STRUCT_H */

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/**
* \file psa/crypto_types.h
*
* \brief PSA cryptography module: type aliases.
*
* \note This file may not be included directly. Applications must
* include psa/crypto.h. Drivers must include the appropriate driver
* header file.
*
* This file contains portable definitions of integral types for properties
* of cryptographic keys, designations of cryptographic algorithms, and
* error codes returned by the library.
*
* This header file does not declare any function.
*/
/*
* Copyright The Mbed TLS Contributors
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef PSA_CRYPTO_TYPES_H
#define PSA_CRYPTO_TYPES_H
#include <stdint.h>
/** \defgroup error Error codes
* @{
*/
/**
* \brief Function return status.
*
* This is either #PSA_SUCCESS (which is zero), indicating success,
* or a small negative value indicating that an error occurred. Errors are
* encoded as one of the \c PSA_ERROR_xxx values defined here. */
/* If #PSA_SUCCESS is already defined, it means that #psa_status_t
* is also defined in an external header, so prevent its multiple
* definition.
*/
#ifndef PSA_SUCCESS
typedef int32_t psa_status_t;
#endif
/**@}*/
/** \defgroup crypto_types Key and algorithm types
* @{
*/
/** \brief Encoding of a key type.
*/
typedef uint16_t psa_key_type_t;
/** The type of PSA elliptic curve family identifiers.
*
* The curve identifier is required to create an ECC key using the
* PSA_KEY_TYPE_ECC_KEY_PAIR() or PSA_KEY_TYPE_ECC_PUBLIC_KEY()
* macros.
*
* Values defined by this standard will never be in the range 0x80-0xff.
* Vendors who define additional families must use an encoding in this range.
*/
typedef uint8_t psa_ecc_family_t;
/** The type of PSA Diffie-Hellman group family identifiers.
*
* The group identifier is required to create an Diffie-Hellman key using the
* PSA_KEY_TYPE_DH_KEY_PAIR() or PSA_KEY_TYPE_DH_PUBLIC_KEY()
* macros.
*
* Values defined by this standard will never be in the range 0x80-0xff.
* Vendors who define additional families must use an encoding in this range.
*/
typedef uint8_t psa_dh_family_t;
/** \brief Encoding of a cryptographic algorithm.
*
* For algorithms that can be applied to multiple key types, this type
* does not encode the key type. For example, for symmetric ciphers
* based on a block cipher, #psa_algorithm_t encodes the block cipher
* mode and the padding mode while the block cipher itself is encoded
* via #psa_key_type_t.
*/
typedef uint32_t psa_algorithm_t;
/**@}*/
/** \defgroup key_lifetimes Key lifetimes
* @{
*/
/** Encoding of key lifetimes.
*
* The lifetime of a key indicates where it is stored and what system actions
* may create and destroy it.
*
* Lifetime values have the following structure:
* - Bits 0-7 (#PSA_KEY_LIFETIME_GET_PERSISTENCE(\c lifetime)):
* persistence level. This value indicates what device management
* actions can cause it to be destroyed. In particular, it indicates
* whether the key is _volatile_ or _persistent_.
* See ::psa_key_persistence_t for more information.
* - Bits 8-31 (#PSA_KEY_LIFETIME_GET_LOCATION(\c lifetime)):
* location indicator. This value indicates where the key is stored
* and where operations on the key are performed.
* See ::psa_key_location_t for more information.
*
* Volatile keys are automatically destroyed when the application instance
* terminates or on a power reset of the device. Persistent keys are
* preserved until the application explicitly destroys them or until an
* implementation-specific device management event occurs (for example,
* a factory reset).
*
* Persistent keys have a key identifier of type #psa_key_id_t.
* This identifier remains valid throughout the lifetime of the key,
* even if the application instance that created the key terminates.
* The application can call psa_open_key() to open a persistent key that
* it created previously.
*
* This specification defines two basic lifetime values:
* - Keys with the lifetime #PSA_KEY_LIFETIME_VOLATILE are volatile.
* All implementations should support this lifetime.
* - Keys with the lifetime #PSA_KEY_LIFETIME_PERSISTENT are persistent.
* All implementations that have access to persistent storage with
* appropriate security guarantees should support this lifetime.
*/
typedef uint32_t psa_key_lifetime_t;
/** Encoding of key persistence levels.
*
* What distinguishes different persistence levels is what device management
* events may cause keys to be destroyed. _Volatile_ keys are destroyed
* by a power reset. Persistent keys may be destroyed by events such as
* a transfer of ownership or a factory reset. What management events
* actually affect persistent keys at different levels is outside the
* scope of the PSA Cryptography specification.
*
* This specification defines the following values of persistence levels:
* - \c 0 = #PSA_KEY_PERSISTENCE_VOLATILE: volatile key.
* A volatile key is automatically destroyed by the implementation when
* the application instance terminates. In particular, a volatile key
* is automatically destroyed on a power reset of the device.
* - \c 1 = #PSA_KEY_PERSISTENCE_DEFAULT:
* persistent key with a default lifetime.
* Implementations should support this value if they support persistent
* keys at all.
* Applications should use this value if they have no specific needs that
* are only met by implementation-specific features.
* - \c 2-127: persistent key with a PSA-specified lifetime.
* The PSA Cryptography specification does not define the meaning of these
* values, but other PSA specifications may do so.
* - \c 128-254: persistent key with a vendor-specified lifetime.
* No PSA specification will define the meaning of these values, so
* implementations may choose the meaning freely.
* As a guideline, higher persistence levels should cause a key to survive
* more management events than lower levels.
* - \c 255 = #PSA_KEY_PERSISTENCE_READ_ONLY:
* read-only or write-once key.
* A key with this persistence level cannot be destroyed.
* Implementations that support such keys may either allow their creation
* through the PSA Cryptography API, preferably only to applications with
* the appropriate privilege, or only expose keys created through
* implementation-specific means such as a factory ROM engraving process.
* Note that keys that are read-only due to policy restrictions
* rather than due to physical limitations should not have this
* persistence levels.
*
* \note Key persistence levels are 8-bit values. Key management
* interfaces operate on lifetimes (type ::psa_key_lifetime_t) which
* encode the persistence as the lower 8 bits of a 32-bit value.
*/
typedef uint8_t psa_key_persistence_t;
/** Encoding of key location indicators.
*
* If an implementation of this API can make calls to external
* cryptoprocessors such as secure elements, the location of a key
* indicates which secure element performs the operations on the key.
* If an implementation offers multiple physical locations for persistent
* storage, the location indicator reflects at which physical location
* the key is stored.
*
* This specification defines the following values of location indicators:
* - \c 0: primary local storage.
* All implementations should support this value.
* The primary local storage is typically the same storage area that
* contains the key metadata.
* - \c 1: primary secure element.
* Implementations should support this value if there is a secure element
* attached to the operating environment.
* As a guideline, secure elements may provide higher resistance against
* side channel and physical attacks than the primary local storage, but may
* have restrictions on supported key types, sizes, policies and operations
* and may have different performance characteristics.
* - \c 2-0x7fffff: other locations defined by a PSA specification.
* The PSA Cryptography API does not currently assign any meaning to these
* locations, but future versions of this specification or other PSA
* specifications may do so.
* - \c 0x800000-0xffffff: vendor-defined locations.
* No PSA specification will assign a meaning to locations in this range.
*
* \note Key location indicators are 24-bit values. Key management
* interfaces operate on lifetimes (type ::psa_key_lifetime_t) which
* encode the location as the upper 24 bits of a 32-bit value.
*/
typedef uint32_t psa_key_location_t;
/** Encoding of identifiers of persistent keys.
*
* - Applications may freely choose key identifiers in the range
* #PSA_KEY_ID_USER_MIN to #PSA_KEY_ID_USER_MAX.
* - Implementations may define additional key identifiers in the range
* #PSA_KEY_ID_VENDOR_MIN to #PSA_KEY_ID_VENDOR_MAX.
* - 0 is reserved as an invalid key identifier.
* - Key identifiers outside these ranges are reserved for future use.
*/
/* Implementation-specific quirk: The Mbed Crypto library can be built as
* part of a multi-client service that exposes the PSA Crypto API in each
* client and encodes the client identity in the key id argument of functions
* such as psa_open_key(). In this build configuration, we define
* psa_key_id_t in crypto_platform.h instead of here. */
#if !defined(MBEDTLS_PSA_CRYPTO_KEY_FILE_ID_ENCODES_OWNER)
typedef uint32_t psa_key_id_t;
#define PSA_KEY_ID_INIT 0
#endif
/**@}*/
/** \defgroup policy Key policies
* @{
*/
/** \brief Encoding of permitted usage on a key. */
typedef uint32_t psa_key_usage_t;
/**@}*/
/** \defgroup attributes Key attributes
* @{
*/
/** The type of a structure containing key attributes.
*
* This is an opaque structure that can represent the metadata of a key
* object. Metadata that can be stored in attributes includes:
* - The location of the key in storage, indicated by its key identifier
* and its lifetime.
* - The key's policy, comprising usage flags and a specification of
* the permitted algorithm(s).
* - Information about the key itself: the key type and its size.
* - Implementations may define additional attributes.
*
* The actual key material is not considered an attribute of a key.
* Key attributes do not contain information that is generally considered
* highly confidential.
*
* An attribute structure can be a simple data structure where each function
* `psa_set_key_xxx` sets a field and the corresponding function
* `psa_get_key_xxx` retrieves the value of the corresponding field.
* However, implementations may report values that are equivalent to the
* original one, but have a different encoding. For example, an
* implementation may use a more compact representation for types where
* many bit-patterns are invalid or not supported, and store all values
* that it does not support as a special marker value. In such an
* implementation, after setting an invalid value, the corresponding
* get function returns an invalid value which may not be the one that
* was originally stored.
*
* An attribute structure may contain references to auxiliary resources,
* for example pointers to allocated memory or indirect references to
* pre-calculated values. In order to free such resources, the application
* must call psa_reset_key_attributes(). As an exception, calling
* psa_reset_key_attributes() on an attribute structure is optional if
* the structure has only been modified by the following functions
* since it was initialized or last reset with psa_reset_key_attributes():
* - psa_set_key_id()
* - psa_set_key_lifetime()
* - psa_set_key_type()
* - psa_set_key_bits()
* - psa_set_key_usage_flags()
* - psa_set_key_algorithm()
*
* Before calling any function on a key attribute structure, the application
* must initialize it by any of the following means:
* - Set the structure to all-bits-zero, for example:
* \code
* psa_key_attributes_t attributes;
* memset(&attributes, 0, sizeof(attributes));
* \endcode
* - Initialize the structure to logical zero values, for example:
* \code
* psa_key_attributes_t attributes = {0};
* \endcode
* - Initialize the structure to the initializer #PSA_KEY_ATTRIBUTES_INIT,
* for example:
* \code
* psa_key_attributes_t attributes = PSA_KEY_ATTRIBUTES_INIT;
* \endcode
* - Assign the result of the function psa_key_attributes_init()
* to the structure, for example:
* \code
* psa_key_attributes_t attributes;
* attributes = psa_key_attributes_init();
* \endcode
*
* A freshly initialized attribute structure contains the following
* values:
*
* - lifetime: #PSA_KEY_LIFETIME_VOLATILE.
* - key identifier: 0 (which is not a valid key identifier).
* - type: \c 0 (meaning that the type is unspecified).
* - key size: \c 0 (meaning that the size is unspecified).
* - usage flags: \c 0 (which allows no usage except exporting a public key).
* - algorithm: \c 0 (which allows no cryptographic usage, but allows
* exporting).
*
* A typical sequence to create a key is as follows:
* -# Create and initialize an attribute structure.
* -# If the key is persistent, call psa_set_key_id().
* Also call psa_set_key_lifetime() to place the key in a non-default
* location.
* -# Set the key policy with psa_set_key_usage_flags() and
* psa_set_key_algorithm().
* -# Set the key type with psa_set_key_type().
* Skip this step if copying an existing key with psa_copy_key().
* -# When generating a random key with psa_generate_key() or deriving a key
* with psa_key_derivation_output_key(), set the desired key size with
* psa_set_key_bits().
* -# Call a key creation function: psa_import_key(), psa_generate_key(),
* psa_key_derivation_output_key() or psa_copy_key(). This function reads
* the attribute structure, creates a key with these attributes, and
* outputs a handle to the newly created key.
* -# The attribute structure is now no longer necessary.
* You may call psa_reset_key_attributes(), although this is optional
* with the workflow presented here because the attributes currently
* defined in this specification do not require any additional resources
* beyond the structure itself.
*
* A typical sequence to query a key's attributes is as follows:
* -# Call psa_get_key_attributes().
* -# Call `psa_get_key_xxx` functions to retrieve the attribute(s) that
* you are interested in.
* -# Call psa_reset_key_attributes() to free any resources that may be
* used by the attribute structure.
*
* Once a key has been created, it is impossible to change its attributes.
*/
typedef struct psa_key_attributes_s psa_key_attributes_t;
#ifndef __DOXYGEN_ONLY__
#if defined(MBEDTLS_PSA_CRYPTO_SE_C)
/* Mbed Crypto defines this type in crypto_types.h because it is also
* visible to applications through an implementation-specific extension.
* For the PSA Cryptography specification, this type is only visible
* via crypto_se_driver.h. */
typedef uint64_t psa_key_slot_number_t;
#endif /* MBEDTLS_PSA_CRYPTO_SE_C */
#endif /* !__DOXYGEN_ONLY__ */
/**@}*/
/** \defgroup derivation Key derivation
* @{
*/
/** \brief Encoding of the step of a key derivation. */
typedef uint16_t psa_key_derivation_step_t;
/**@}*/
#endif /* PSA_CRYPTO_TYPES_H */

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