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change 14b apdu - longer timeout, emrt now autopad too short document numbers

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This commit is contained in:
iceman1001 2020-12-17 00:00:26 +01:00
parent c7e5648164
commit 4b9ffef63a
2 changed files with 36 additions and 28 deletions
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3
client/src/cmdhf14b.c
View file

@ -26,6 +26,7 @@
#include "mifare/ndef.h" // NDEFRecordsDecodeAndPrint
#define TIMEOUT 2000
#define APDU_TIMEOUT 4000
// iso14b apdu input frame length
static uint16_t apdu_frame_length = 0;
@ -1438,7 +1439,7 @@ static int handle_14b_apdu(bool chainingin, uint8_t *datain, int datainlen, bool
SendCommandMIX(CMD_HF_ISO14443B_COMMAND, ISO14B_APDU | flags, 0, 0, NULL, 0);
PacketResponseNG resp;
if (WaitForResponseTimeout(CMD_HF_ISO14443B_COMMAND, &resp, TIMEOUT)) {
if (WaitForResponseTimeout(CMD_HF_ISO14443B_COMMAND, &resp, APDU_TIMEOUT)) {
uint8_t *recv = resp.data.asBytes;
int rlen = resp.oldarg[0];
uint8_t res = resp.oldarg[1];

61
client/src/cmdhfemrtd.c
View file

@ -274,24 +274,24 @@ static void retail_mac(uint8_t *key, uint8_t *input, int inputlen, uint8_t *outp
}
static void emrtd_deskey(uint8_t *seed, const uint8_t *type, int length, uint8_t *dataout) {
PrintAndLogEx(DEBUG, "seed: %s", sprint_hex_inrow(seed, 16));
PrintAndLogEx(DEBUG, "seed.............. %s", sprint_hex_inrow(seed, 16));
// combine seed and type
uint8_t data[50];
memcpy(data, seed, length);
memcpy(data + length, type, 4);
PrintAndLogEx(DEBUG, "data: %s", sprint_hex_inrow(data, length + 4));
PrintAndLogEx(DEBUG, "data.............. %s", sprint_hex_inrow(data, length + 4));
// SHA1 the key
unsigned char key[64];
mbedtls_sha1(data, length + 4, key);
PrintAndLogEx(DEBUG, "key: %s", sprint_hex_inrow(key, length + 4));
PrintAndLogEx(DEBUG, "key............... %s", sprint_hex_inrow(key, length + 4));
// Set parity bits
for (int i = 0; i < ((length + 4) / 8); i++) {
mbedtls_des_key_set_parity(key + (i * 8));
}
PrintAndLogEx(DEBUG, "post-parity key: %s", sprint_hex_inrow(key, 20));
PrintAndLogEx(DEBUG, "post-parity key... %s", sprint_hex_inrow(key, 20));
memcpy(dataout, &key, length);
}
@ -314,9 +314,7 @@ static int emrtd_get_challenge(int length, uint8_t *dataout, int *dataoutlen, bo
static int emrtd_external_authenticate(uint8_t *data, int length, uint8_t *dataout, int *dataoutlen, bool use_14b) {
char cmd[100];
sprintf(cmd, "00%s0000%02X%s%02X", EMRTD_EXTERNAL_AUTHENTICATE, length, sprint_hex_inrow(data, length), length);
return emrtd_exchange_commands(cmd, dataout, dataoutlen, false, true, use_14b);
}
@ -718,9 +716,10 @@ static bool emrtd_dump_file(uint8_t *ks_enc, uint8_t *ks_mac, uint8_t *ssc, cons
static void rng(int length, uint8_t *dataout) {
// Do very very secure prng operations
for (int i = 0; i < (length / 4); i++) {
num_to_bytes(prng_successor(msclock() + i, 32), 4, &dataout[i * 4]);
}
//for (int i = 0; i < (length / 4); i++) {
// num_to_bytes(prng_successor(msclock() + i, 32), 4, &dataout[i * 4]);
//}
memset(dataout, 0x00, length);
}
static bool emrtd_do_bac(char *documentnumber, char *dob, char *expiry, uint8_t *ssc, uint8_t *ks_enc, uint8_t *ks_mac, bool use_14b) {
@ -737,9 +736,9 @@ static bool emrtd_do_bac(char *documentnumber, char *dob, char *expiry, uint8_t
rng(8, rnd_ifd);
rng(16, k_ifd);
PrintAndLogEx(DEBUG, "doc: %s", documentnumber);
PrintAndLogEx(DEBUG, "dob: %s", dob);
PrintAndLogEx(DEBUG, "exp: %s", expiry);
PrintAndLogEx(DEBUG, "doc............... " _GREEN_("%s"), documentnumber);
PrintAndLogEx(DEBUG, "dob............... " _GREEN_("%s"), dob);
PrintAndLogEx(DEBUG, "exp............... " _GREEN_("%s"), expiry);
char documentnumbercd = emrtd_calculate_check_digit(documentnumber);
char dobcd = emrtd_calculate_check_digit(dob);
@ -747,40 +746,40 @@ static bool emrtd_do_bac(char *documentnumber, char *dob, char *expiry, uint8_t
char kmrz[25];
sprintf(kmrz, "%s%i%s%i%s%i", documentnumber, documentnumbercd, dob, dobcd, expiry, expirycd);
PrintAndLogEx(DEBUG, "kmrz: %s", kmrz);
PrintAndLogEx(DEBUG, "kmrz.............. " _GREEN_("%s"), kmrz);
uint8_t kseed[16] = { 0x00 };
mbedtls_sha1((unsigned char *)kmrz, strlen(kmrz), kseed);
PrintAndLogEx(DEBUG, "kseed: %s", sprint_hex_inrow(kseed, 16));
PrintAndLogEx(DEBUG, "kseed (sha1)...... %s ", sprint_hex_inrow(kseed, 16));
emrtd_deskey(kseed, KENC_type, 16, kenc);
emrtd_deskey(kseed, KMAC_type, 16, kmac);
PrintAndLogEx(DEBUG, "kenc: %s", sprint_hex_inrow(kenc, 16));
PrintAndLogEx(DEBUG, "kmac: %s", sprint_hex_inrow(kmac, 16));
PrintAndLogEx(DEBUG, "kenc.............. %s", sprint_hex_inrow(kenc, 16));
PrintAndLogEx(DEBUG, "kmac.............. %s", sprint_hex_inrow(kmac, 16));
// Get Challenge
if (emrtd_get_challenge(8, rnd_ic, &resplen, use_14b) == false) {
PrintAndLogEx(ERR, "Couldn't get challenge.");
return false;
}
PrintAndLogEx(DEBUG, "rnd_ic: %s", sprint_hex_inrow(rnd_ic, 8));
PrintAndLogEx(DEBUG, "rnd_ic............ %s", sprint_hex_inrow(rnd_ic, 8));
memcpy(S, rnd_ifd, 8);
memcpy(S + 8, rnd_ic, 8);
memcpy(S + 16, k_ifd, 16);
PrintAndLogEx(DEBUG, "S: %s", sprint_hex_inrow(S, 32));
PrintAndLogEx(DEBUG, "S................. %s", sprint_hex_inrow(S, 32));
uint8_t iv[8] = { 0x00 };
uint8_t e_ifd[32] = { 0x00 };
des3_encrypt_cbc(iv, kenc, S, sizeof(S), e_ifd);
PrintAndLogEx(DEBUG, "e_ifd: %s", sprint_hex_inrow(e_ifd, 32));
PrintAndLogEx(DEBUG, "e_ifd............. %s", sprint_hex_inrow(e_ifd, 32));
uint8_t m_ifd[8] = { 0x00 };
retail_mac(kmac, e_ifd, 32, m_ifd);
PrintAndLogEx(DEBUG, "m_ifd: %s", sprint_hex_inrow(m_ifd, 8));
PrintAndLogEx(DEBUG, "m_ifd............. %s", sprint_hex_inrow(m_ifd, 8));
uint8_t cmd_data[40];
memcpy(cmd_data, e_ifd, 32);
@ -795,7 +794,7 @@ static bool emrtd_do_bac(char *documentnumber, char *dob, char *expiry, uint8_t
uint8_t dec_output[32] = { 0x00 };
des3_decrypt_cbc(iv, kenc, response, 32, dec_output);
PrintAndLogEx(DEBUG, "dec_output: %s", sprint_hex_inrow(dec_output, 32));
PrintAndLogEx(DEBUG, "dec_output........ %s", sprint_hex_inrow(dec_output, 32));
if (memcmp(rnd_ifd, dec_output + 8, 8) != 0) {
PrintAndLogEx(ERR, "Challenge failed, rnd_ifd does not match.");
@ -809,18 +808,18 @@ static bool emrtd_do_bac(char *documentnumber, char *dob, char *expiry, uint8_t
kseed[x] = k_ifd[x] ^ k_icc[x];
}
PrintAndLogEx(DEBUG, "kseed: %s", sprint_hex_inrow(kseed, 16));
PrintAndLogEx(DEBUG, "kseed............ %s", sprint_hex_inrow(kseed, 16));
emrtd_deskey(kseed, KENC_type, 16, ks_enc);
emrtd_deskey(kseed, KMAC_type, 16, ks_mac);
PrintAndLogEx(DEBUG, "ks_enc: %s", sprint_hex_inrow(ks_enc, 16));
PrintAndLogEx(DEBUG, "ks_mac: %s", sprint_hex_inrow(ks_mac, 16));
PrintAndLogEx(DEBUG, "ks_enc........ %s", sprint_hex_inrow(ks_enc, 16));
PrintAndLogEx(DEBUG, "ks_mac........ %s", sprint_hex_inrow(ks_mac, 16));
memcpy(ssc, rnd_ic + 4, 4);
memcpy(ssc + 4, rnd_ifd + 4, 4);
PrintAndLogEx(DEBUG, "ssc: %s", sprint_hex_inrow(ssc, 8));
PrintAndLogEx(DEBUG, "ssc........... %s", sprint_hex_inrow(ssc, 8));
return true;
}
@ -975,9 +974,17 @@ static int cmd_hf_emrtd_dump(const char *Cmd) {
// Go through all args, if even one isn't supplied, mark BAC as unavailable
if (CLIParamStrToBuf(arg_get_str(ctx, 1), docnum, 9, &slen) != 0 || slen == 0) {
BAC = false;
} else if (CLIParamStrToBuf(arg_get_str(ctx, 2), dob, 6, &slen) != 0 || slen == 0) {
} else {
if ( slen != 9) {
memset(docnum + slen, 0x3c, 9 - slen);
}
}
if (CLIParamStrToBuf(arg_get_str(ctx, 2), dob, 6, &slen) != 0 || slen == 0) {
BAC = false;
} else if (CLIParamStrToBuf(arg_get_str(ctx, 3), expiry, 6, &slen) != 0 || slen == 0) {
}
if (CLIParamStrToBuf(arg_get_str(ctx, 3), expiry, 6, &slen) != 0 || slen == 0) {
BAC = false;
}