X-Git-Url: http://cvs.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/3ad48540d4d77f50cc62d16acb78f17019ef431d..d2ca5dbfe8def88a3d03493524854a79a2b462a1:/client/loclass/ikeys.c?ds=sidebyside
diff --git a/client/loclass/ikeys.c b/client/loclass/ikeys.c
index 5240cba1..a40d563a 100644
--- a/client/loclass/ikeys.c
+++ b/client/loclass/ikeys.c
@@ -1,20 +1,28 @@
/*****************************************************************************
- * This file is part of iClassCipher. It is a reconstructon of the cipher engine
+ * WARNING
+ *
+ * THIS CODE IS CREATED FOR EXPERIMENTATION AND EDUCATIONAL USE ONLY.
+ *
+ * USAGE OF THIS CODE IN OTHER WAYS MAY INFRINGE UPON THE INTELLECTUAL
+ * PROPERTY OF OTHER PARTIES, SUCH AS INSIDE SECURE AND HID GLOBAL,
+ * AND MAY EXPOSE YOU TO AN INFRINGEMENT ACTION FROM THOSE PARTIES.
+ *
+ * THIS CODE SHOULD NEVER BE USED TO INFRINGE PATENTS OR INTELLECTUAL PROPERTY RIGHTS.
+ *
+ *****************************************************************************
+ *
+ * This file is part of loclass. It is a reconstructon of the cipher engine
* used in iClass, and RFID techology.
*
* The implementation is based on the work performed by
* Flavio D. Garcia, Gerhard de Koning Gans, Roel Verdult and
* Milosch Meriac in the paper "Dismantling IClass".
*
- * This is a reference implementation of iclass key diversification. I'm sure it can be
- * optimized heavily. It is written for ease of understanding and correctness, please take it
- * and tweak it and make a super fast version instead, using this for testing and verification.
-
* Copyright (C) 2014 Martin Holst Swende
*
* This is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as published
- * by the Free Software Foundation.
+ * by the Free Software Foundation, or, at your option, any later version.
*
* This file is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ -22,8 +30,11 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
- * along with IClassCipher. If not, see .
+ * along with loclass. If not, see .
+ *
+ *
****************************************************************************/
+
/**
@@ -57,12 +68,12 @@ From "Dismantling iclass":
#include
#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;
@@ -382,16 +393,16 @@ 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);
- //uint64_t crypted_csn_swapped = swapZvalues(crypt_csn);
+ //uint64_t crypted_csn_swapped = swapZvalues(crypt_csn);
hash0(crypt_csn,div_key);
}
@@ -455,13 +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)
{
@@ -667,7 +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 );
@@ -698,7 +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");
@@ -725,19 +736,19 @@ int doTestsWithKnownInputs()
int readKeyFile(uint8_t key[8])
{
-
FILE *f;
-
+ int retval = 1;
f = fopen("iclass_key.bin", "rb");
- if (f)
- {
- if(fread(key, sizeof(key), 1, f) == 1) return 0;
+ if (!f)
+ return retval;
+
+ if (fread(key, sizeof(uint8_t), 8, f) == 8) {
+ retval = 0;
}
- return 1;
-
+ fclose(f);
+ return retval;
}
-
int doKeyTests(uint8_t debuglevel)
{
debug_print = debuglevel;
@@ -765,8 +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();