+int aes_encode(uint8_t *iv, uint8_t *key, uint8_t *input, uint8_t *output, int length){\r
+ uint8_t iiv[16] = {0};\r
+ if (iv)\r
+ memcpy(iiv, iv, 16);\r
+ \r
+ aes_context aes;\r
+ aes_init(&aes);\r
+ if (aes_setkey_enc(&aes, key, 128))\r
+ return 1;\r
+ if (aes_crypt_cbc(&aes, AES_ENCRYPT, length, iiv, input, output))\r
+ return 2;\r
+ aes_free(&aes);\r
+\r
+ return 0;\r
+}\r
+\r
+int aes_decode(uint8_t *iv, uint8_t *key, uint8_t *input, uint8_t *output, int length){\r
+ uint8_t iiv[16] = {0};\r
+ if (iv)\r
+ memcpy(iiv, iv, 16);\r
+ \r
+ aes_context aes;\r
+ aes_init(&aes);\r
+ if (aes_setkey_dec(&aes, key, 128))\r
+ return 1;\r
+ if (aes_crypt_cbc(&aes, AES_DECRYPT, length, iiv, input, output))\r
+ return 2;\r
+ aes_free(&aes);\r
+\r
+ return 0;\r
+}\r
+\r
+int CmdHF14AMfAuth4(const char *cmd) {\r
+ uint8_t keyn[20] = {0};\r
+ int keynlen = 0;\r
+ uint8_t key[16] = {0};\r
+ int keylen = 0;\r
+ uint8_t data[257] = {0};\r
+ int datalen = 0;\r
+ \r
+ uint8_t Rnd1[17] = {0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x00};\r
+ uint8_t Rnd2[17] = {0};\r
+ \r
+ \r
+ CLIParserInit("hf mf auth4", \r
+ "Executes AES authentication command in ISO14443-4", \r
+ "Usage:\n\thf mf auth4 4000 000102030405060708090a0b0c0d0e0f -> executes authentication\n"\r
+ "\thf mf auth4 9003 FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF -> executes authentication\n");\r
+\r
+ void* argtable[] = {\r
+ arg_param_begin,\r
+ arg_str1(NULL, NULL, "<Key Num (HEX 2 bytes)>", NULL),\r
+ arg_str1(NULL, NULL, "<Key Value (HEX 16 bytes)>", NULL),\r
+ arg_param_end\r
+ };\r
+ CLIExecWithReturn(cmd, argtable, true);\r
+ \r
+ CLIGetStrWithReturn(1, keyn, &keynlen);\r
+ CLIGetStrWithReturn(2, key, &keylen);\r
+ CLIParserFree();\r
+ \r
+ if (keynlen != 2) {\r
+ PrintAndLog("ERROR: <Key Num> must be 2 bytes long instead of: %d", keynlen);\r
+ return 1;\r
+ }\r
+ \r
+ if (keylen != 16) {\r
+ PrintAndLog("ERROR: <Key Value> must be 16 bytes long instead of: %d", keylen);\r
+ return 1;\r
+ }\r
+\r
+ uint8_t cmd1[] = {0x70, keyn[1], keyn[0], 0x00};\r
+ int res = ExchangeRAW14a(cmd1, sizeof(cmd1), true, true, data, sizeof(data), &datalen);\r
+ if (res) {\r
+ PrintAndLog("ERROR exchande raw error: %d", res);\r
+ DropField();\r
+ return 2;\r
+ }\r
+ \r
+ PrintAndLog("<phase1: %s", sprint_hex(data, datalen));\r
+ \r
+ if (datalen < 1) {\r
+ PrintAndLog("ERROR: card response length: %d", datalen);\r
+ DropField();\r
+ return 3;\r
+ }\r
+ \r
+ if (data[0] != 0x90) {\r
+ PrintAndLog("ERROR: card response error: %02x", data[2]);\r
+ DropField();\r
+ return 3;\r
+ }\r
+\r
+ if (datalen != 19) { // code 1b + 16b + crc 2b\r
+ PrintAndLog("ERROR: card response must be 19 bytes long instead of: %d", datalen);\r
+ DropField();\r
+ return 3;\r
+ }\r
+ \r
+ aes_decode(NULL, key, &data[1], Rnd2, 16);\r
+ Rnd2[16] = Rnd2[0];\r
+ PrintAndLog("Rnd2: %s", sprint_hex(Rnd2, 16));\r
+\r
+ uint8_t cmd2[33] = {0};\r
+ cmd2[0] = 0x72;\r
+\r
+ uint8_t raw[32] = {0};\r
+ memmove(raw, Rnd1, 16);\r
+ memmove(&raw[16], &Rnd2[1], 16);\r
+\r
+ aes_encode(NULL, key, raw, &cmd2[1], 32);\r
+ PrintAndLog(">phase2: %s", sprint_hex(cmd2, 33));\r
+ \r
+ res = ExchangeRAW14a(cmd2, sizeof(cmd2), false, false, data, sizeof(data), &datalen);\r
+ if (res) {\r
+ PrintAndLog("ERROR exchande raw error: %d", res);\r
+ DropField();\r
+ return 4;\r
+ }\r
+ \r
+ PrintAndLog("<phase2: %s", sprint_hex(data, datalen));\r
+\r
+ aes_decode(NULL, key, &data[1], raw, 32);\r
+ PrintAndLog("res: %s", sprint_hex(raw, 32));\r
+ \r
+ PrintAndLog("Rnd1`: %s", sprint_hex(&raw[4], 16));\r
+ if (memcmp(&raw[4], &Rnd1[1], 16)) {\r
+ PrintAndLog("\nERROR: Authentication FAILED. rnd not equal");\r
+ PrintAndLog("rnd1 reader: %s", sprint_hex(&Rnd1[1], 16));\r
+ PrintAndLog("rnd1 card: %s", sprint_hex(&raw[4], 16));\r
+ DropField();\r
+ return 5;\r
+ }\r
+\r
+ DropField();\r
+ PrintAndLog("\nAuthentication OK");\r
+ \r
+ return 0;\r
+}\r
+\r
projects / proxmark3-svn / blobdiff