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ikeys

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This commit is contained in:
merlokk 2018-11-14 11:34:20 +02:00
parent 0ef9b609dc
commit 82b6a2cd5b
1 changed files with 12 additions and 12 deletions
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24
client/loclass/ikeys.c
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@ -65,12 +65,12 @@ From "Dismantling iclass":
#include <inttypes.h>
#include "fileutils.h"
#include "cipherutils.h"
#include "des.h"
#include "mbedtls/des.h"
uint8_t pi[35] = {0x0F,0x17,0x1B,0x1D,0x1E,0x27,0x2B,0x2D,0x2E,0x33,0x35,0x39,0x36,0x3A,0x3C,0x47,0x4B,0x4D,0x4E,0x53,0x55,0x56,0x59,0x5A,0x5C,0x63,0x65,0x66,0x69,0x6A,0x6C,0x71,0x72,0x74,0x78};
static des_context ctx_enc = {DES_ENCRYPT,{0}};
static des_context ctx_dec = {DES_DECRYPT,{0}};
static mbedtls_des_context ctx_enc = {0};
static mbedtls_des_context ctx_dec = {0};
static int debug_print = 0;
@ -370,12 +370,12 @@ void hash0(uint64_t c, uint8_t k[8])
void diversifyKey(uint8_t csn[8], uint8_t key[8], uint8_t div_key[8])
{
// Prepare the DES key
des_setkey_enc( &ctx_enc, key);
mbedtls_des_setkey_enc( &ctx_enc, key);
uint8_t crypted_csn[8] = {0};
// Calculate DES(CSN, KEY)
des_crypt_ecb(&ctx_enc,csn, crypted_csn);
mbedtls_des_crypt_ecb(&ctx_enc,csn, crypted_csn);
//Calculate HASH0(DES))
uint64_t crypt_csn = x_bytes_to_num(crypted_csn, 8);
@ -437,13 +437,13 @@ typedef struct
uint8_t div_key[8];
} Testcase;
int testDES(Testcase testcase, des_context ctx_enc, des_context ctx_dec)
int testDES(Testcase testcase, mbedtls_des_context ctx_enc, mbedtls_des_context ctx_dec)
{
uint8_t des_encrypted_csn[8] = {0};
uint8_t decrypted[8] = {0};
uint8_t div_key[8] = {0};
int retval = des_crypt_ecb(&ctx_enc,testcase.uid,des_encrypted_csn);
retval |= des_crypt_ecb(&ctx_dec,des_encrypted_csn,decrypted);
int retval = mbedtls_des_crypt_ecb(&ctx_enc,testcase.uid,des_encrypted_csn);
retval |= mbedtls_des_crypt_ecb(&ctx_dec,des_encrypted_csn,decrypted);
if(memcmp(testcase.uid,decrypted,8) != 0)
{
@ -629,7 +629,7 @@ int testDES2(uint64_t csn, uint64_t expected) {
print64bits(" csn ", csn);
x_num_to_bytes(csn, 8,input);
des_crypt_ecb(&ctx_enc,input, result);
mbedtls_des_crypt_ecb(&ctx_enc,input, result);
uint64_t crypt_csn = x_bytes_to_num(result, 8);
print64bits(" {csn} ", crypt_csn );
@ -654,7 +654,7 @@ int doTestsWithKnownInputs() {
PrintAndLogDevice(SUCCESS, "Testing DES encryption");
uint8_t key[8] = {0x6c,0x8d,0x44,0xf9,0x2a,0x2d,0x01,0xbf};
des_setkey_enc( &ctx_enc, key);
mbedtls_des_setkey_enc( &ctx_enc, key);
testDES2(0xbbbbaaaabbbbeeee,0xd6ad3ca619659e6b);
PrintAndLogDevice(SUCCESS, "Testing hashing algorithm");
@ -712,8 +712,8 @@ int doKeyTests(uint8_t debuglevel) {
PrintAndLogDevice(SUCCESS, "Key present");
PrintAndLogDevice(SUCCESS, "Checking key parity...");
des_checkParity(key);
des_setkey_enc( &ctx_enc, key);
des_setkey_dec( &ctx_dec, key);
mbedtls_des_setkey_enc( &ctx_enc, key);
mbedtls_des_setkey_dec( &ctx_dec, key);
// Test hashing functions
PrintAndLogDevice(SUCCESS, "The following tests require the correct 8-byte master key");
testKeyDiversificationWithMasterkeyTestcases();