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ikeys

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This commit is contained in:
merlokk 2018-11-19 11:53:44 +02:00
commit 5c3eaed840
1 changed files with 12 additions and 12 deletions
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24
client/loclass/ikeys.c
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@ -68,12 +68,12 @@ From "Dismantling iclass":
#include <inttypes.h>
#include "fileutils.h"
#include "cipherutils.h"
#include "polarssl/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;
@ -393,12 +393,12 @@ 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);
@ -466,13 +466,13 @@ typedef struct
} 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)
{
@ -678,7 +678,7 @@ 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 );
@ -709,7 +709,7 @@ int doTestsWithKnownInputs()
prnlog("[+] Testing foo");
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);
prnlog("[+] Testing hashing algorithm");
@ -776,8 +776,8 @@ int doKeyTests(uint8_t debuglevel)
prnlog("[+] 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
prnlog("[+] The following tests require the correct 8-byte master key");
testKeyDiversificationWithMasterkeyTestcases();