From 3063768ac2fdf94555317efb2d6500d56d22e2cb Mon Sep 17 00:00:00 2001
From: "atul.jha" <s8atjhaa@stud.uni-saarland.de>
Date: Wed, 2 Sep 2020 12:48:23 +0200
Subject: [PATCH] rpi experiemnt

---
 trial3/ECCtrial.c | 72 ++++++++++++++++++++++++-----------------------
 trial3/layer1.c   |  2 +-
 trial3/makefile   |  3 ++
 3 files changed, 41 insertions(+), 36 deletions(-)

diff --git a/trial3/ECCtrial.c b/trial3/ECCtrial.c
index 788bfcd..164bfc9 100644
--- a/trial3/ECCtrial.c
+++ b/trial3/ECCtrial.c
@@ -1,22 +1,26 @@
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 
-#include<mbedtls/config.h>
+#include "mbedtls/config.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 "mbedtls/aes.h"
+#include "mbedtls/bignum.h"
+#include "mbedtls/ctr_drbg.h"
+#include "mbedtls/entropy.h"
+#include "mbedtls/ecp.h"
+#include "mbedtls/ecdh.h"
+#include "mbedtls/ecdsa.h"
+#include "mbedtls/hmac_drbg.h"
+#include "mbedtls/hkdf.h"
+#include "mbedtls/md.h"
+#include "mbedtls/pk.h"
+#include "mbedtls/rsa.h"
+#include "mbedtls/sha1.h"
+#include "mbedtls/sha256.h"
 
-#include <mbedtls/md.h>
-#include <mbedtls/pk.h>
-#include <mbedtls/entropy.h>
 
+#include "defines.h"
 
   //firt generate ECC/RA key. 
   //check for deterministic consistency
@@ -32,33 +36,31 @@
 void main()
 {
 
-	mbedtls_pk_context key;
-    mbedtls_entropy_context entropy;
-    mbedtls_ctr_drbg_context ctr_drbg;
+  uint8_t* UDS_ID = calloc(1,sizeof(uint8_t)*UDS_DGST_SIZE);
+  uint8_t* FW_ID = calloc(1,sizeof(uint8_t)*FW_DGST_SIZE);
+  uint8_t* CD_ID = calloc(1,sizeof(uint8_t)*CDI_DGST_SIZE); 
 
-    mbedtls_pk_type_t pk_alg = MBEDTLS_PK_ECKEY;
+  uint8_t UDSbuf[UDS_SIZE] = {0Xe3,0xc5,0x58,0xaa,0x2f,0xd2,0x19,0x25};
+  uint8_t FWbuf[100] = {0Xe3,0xc5,0x58,0xaa,0x2f,0xd2,0x19,0x25,0Xe3,0xc5,0x58,0xaa,0x2f,0xd2,0x19,0x25,0Xe3,0xc5,0x58,0xaa,0x2f,0xd2,0x19,0x25,0Xe3,0xc5,0x58,0xaa,0x2f,0xd2,0x19,0x25,0Xe3,0xc5,0x58,0xaa,0x2f,0xd2,0x19,0x25,0Xe3,0xc5,0x58,0xaa,0x2f,0xd2,0x19,0x25,0Xe3,0xc5,0x58,0xaa,0x2f,0xd2,0x19,0x25,0Xe3,0xc5,0x58,0xaa,0x2f,0xd2,0x19,0x25,0Xe3,0xc5,0x58,0xaa,0x2f,0xd2,0x19,0x25,0Xe3,0xc5,0x58,0xaa,0x2f,0xd2,0x19,0x25,0Xe3,0xc5,0x58,0xaa,0x2f,0xd2,0x19,0x25,0Xe3,0xc5,0x58,0xaa,0x2f,0xd2,0x19,0x25};
 
-    mbedtls_pk_init(&key);
-    mbedtls_entropy_init( &entropy );
-    mbedtls_ctr_drbg_init(&ctr_drbg);
+  mbedtls_sha256_ret( UDSbuf,UDS_SIZE,UDS_ID,0 );
+  mbedtls_sha256_ret(FWbuf,100,FW_ID,0 );
 
 
-   	int ret = mbedtls_pk_setup(&key, mbedtls_pk_info_from_type(pk_alg));
+  for (int i = 0; i < 32; i++)
+      printf("%hhx", UDS_ID[i]);
+  printf(" :  UDS ID\n" );
 
-    ret = mbedtls_ctr_drbg_seed(&ctr_drbg, mbedtls_entropy_func,
-                               &entropy,
-                               (const unsigned char *) "ecdsa",
-                               strlen(pers)
-    );
-
-    ret = mbedtls_ecp_gen_key(MBEDTLS_ECP_DP_SECP256R,
-                              mbedtls_pk_ec(key),
-                              mbedtls_ctr_drbg_random,
-                              &ctr_drbg
-    );
+  for (int i = 0; i < 32; i++)
+      printf("%hhx", FW_ID[i]);
+  printf(" :  UDS ID\n" );
 
 
-    printf("done\n\n");
-    printf("I wonder what the key is\n\n");
-    printf("key : %s", key) 
+
+
+
+
+
+  printf("SUCCESSUL EXIT\n");
+
 }
\ No newline at end of file
diff --git a/trial3/layer1.c b/trial3/layer1.c
index e504944..c839a57 100644
--- a/trial3/layer1.c
+++ b/trial3/layer1.c
@@ -46,7 +46,7 @@ int readFWID(uint8_t* FW_M)
 //  //2. Calcualte hash into arg
 
   FILE *fp = NULL;  
-  fp = fopen("layer2.c", "r");
+  fp = fopen("layer1.c", "r");
   if (!fp)
   {  
     perror("File open failed\n");
diff --git a/trial3/makefile b/trial3/makefile
index 418e58b..d7617cb 100644
--- a/trial3/makefile
+++ b/trial3/makefile
@@ -17,6 +17,9 @@ all: main.c layer1.c
 debug:
 	${CC} -g -o $(ODIR)/dbg-main main.c layer1.c layer2.c -lm -lmbedcrypto -lmbedtls -lmbedx509 
 
+trial:
+	${CC} -g -o $(ODIR)/trial ECCtrial.c layer1.c layer2.c -lm -lmbedcrypto -lmbedtls -lmbedx509 
+
 clean: 
 	rm -r $(ODIR)/* 
 	rm -r ./keys/*