basic ECC functional

trial2/include/ROMfunctions.h

@@ -1,11 +1,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 
-#include <mbedtls/aes.h>
-#include <mbedtls/bignum.h>
-#include <mbedtls/ecdh.h>
-#include <mbedtls/ecdsa.h>
-#include <mbedtls/ecp.h>
+
 #include <mbedtls/hkdf.h>
 #include <mbedtls/hmac_drbg.h>
 #include <mbedtls/hkdf.h>

trial2/include/defines.h

@@ -23,4 +23,11 @@
 #define CDI_DGST_SIZE		SHA256_DGST_SIZE
 #define CDI_KEY_SIZE		32
 #define HKDF_ALG			MBEDTLS_MD_SHA256
-#define ECC_CURVE
+#define ECC_CURVE			MBEDTLS_ECP_DP_SECP256R1	//mbedtls_ecp_group_id
+
+
+
+
+/* CONFIGURATIONS */
+
+#define USE_ECC			1

trial2/include/functions.h

@@ -1,7 +1,14 @@
 #include <stdio.h>
 #include <stdlib.h>
 
-
+#include <mbedtls/aes.h>
+#include <mbedtls/bignum.h>
+#include <mbedtls/ctr_drbg.h>
+#include <mbedtls/hmac_drbg.h>
+#include <mbedtls/ecdh.h>
+#include <mbedtls/ecdsa.h>
+#include <mbedtls/ecp.h>
+#include <mbedtls/rsa.h>
 #include <mbedtls/sha256.h>
 
 #include <defines.h>
@@ -10,3 +17,5 @@
 
 
 void ROMprotocol(void);
+void deriveDeviceIDKeyPair(uint8_t * CDIKEY, int isECC);
+void seedRNGSource(uint8_t * CDIKEY);

trial2/src/functions.c

@@ -38,5 +38,81 @@ void ROMprotocol(void)
         printf("%x",CDIKEY[i]);
     printf(" : CDIKEY main\n");
 
+  printf("USE_ECC %d\n", USE_ECC);
+  deriveDeviceIDKeyPair(CDIKEY, USE_ECC);
+
+
+printf("pass 100\n");
+
   return;
+}
+
+void seedRNGSource(uint8_t * CDIKEY)
+{
+  //srand(); lib fun call //https://stackoverflow.com/questions/55927662/generate-every-time-same-rsa-key-with-c
+  //ctr_drbg    //programs/test/benchmark.c:705
+  //hmac_drbg
+
+  //seed rng with CDIKEY
+  //init
+  //drbg seed
+
+
+
+
+  return;
+}
+
+
+
+void deriveDeviceIDKeyPair(uint8_t * CDIKEY, int isECC)
+{
+
+  //firt generate ECC/RA key. 
+  //check for deterministic consistency
+  //seed RNGs with CDI
+  //let's see how it goes
+
+  //add entropy source?
+  //seed RNG
+  //create ctx
+  //init
+  //gen keypair
+
+  if(isECC)
+  { 
+    //mbedtls_ecp_group_id grpID = ECC_CURVE;
+printf("pass 1\n");
+    const mbedtls_ecp_curve_info *crvInfo;
+    crvInfo = mbedtls_ecp_curve_info_from_grp_id(ECC_CURVE);
+printf("pass 2\n");
+
+    mbedtls_ecp_group *ecpGrp;
+printf("pass 3\n");    
+    //mbedtls_ecp_group_init(ecpGrp);
+    //mbedtls_ecp_group_load(ecpGrp,ECC_CURVE);
+printf("pass 4\n");
+    //mbedtls_ecp_keypair *keyPair = {0};
+printf("pass 5\n");
+    //mbedtls_ecp_keypair_init(keyPair);
+
+printf("pass 6\n");
+
+
+    printf("ECC is not yet implemented\n");
+
+    //mbedtls_ecp_keypair_free(keyPair);
+    //mbedtls_ecp_group_free(ecpGrp);
+    printf("pass 7\n");
+    return;
+  }
+
+  else
+  {
+
+    printf("RSA is not yet implemented\n");
+    return;
+  }
+
+
 }