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CHG: the "HF MFU" authentication changes.

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CHG: name change from "hf 14a snoop"  ->  "hf 14a sniff"..
This commit is contained in:
iceman1001 2015-05-16 15:34:01 +02:00
commit 4d2e4eea58
5 changed files with 172 additions and 203 deletions
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138
armsrc/mifareutil.c
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@ -18,6 +18,7 @@
#include "iso14443a.h"
#include "crapto1.h"
#include "mifareutil.h"
#include "des.h"
int MF_DBGLEVEL = MF_DBG_ALL;
@ -110,6 +111,27 @@ int mifare_sendcmd_short_mfucauth(struct Crypto1State *pcs, uint8_t crypted, uin
return len;
}
int mifare_sendcmd_short_mfuev1auth(struct Crypto1State *pcs, uint8_t crypted, uint8_t cmd, uint8_t *data, uint8_t *answer, uint8_t *answer_parity, uint32_t *timing)
{
uint8_t dcmd[7];
int len;
dcmd[0] = cmd;
memcpy(dcmd+1,data,4);
AppendCrc14443a(dcmd, 5);
ReaderTransmit(dcmd, sizeof(dcmd), timing);
len = ReaderReceive(answer, answer_parity);
if(!len) {
if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Authentication failed. Card timeout.");
len = ReaderReceive(answer,answer_parity);
}
if(len==1) {
if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("NAK - Authentication failed.");
return 1;
}
return len;
}
int mifare_sendcmd_shortex(struct Crypto1State *pcs, uint8_t crypted, uint8_t cmd, uint8_t data, uint8_t *answer, uint8_t *answer_parity, uint32_t *timing)
{
uint8_t dcmd[4], ecmd[4];
@ -288,47 +310,113 @@ int mifare_classic_readblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blo
}
// mifare ultralight commands
int mifare_ultra_auth1(uint8_t *blockData){
int mifare_ul_ev1_auth(uint8_t *keybytes, uint8_t *pack){
uint16_t len;
uint8_t receivedAnswer[MAX_FRAME_SIZE];
uint8_t receivedAnswerPar[MAX_PARITY_SIZE];
uint8_t resp[4];
uint8_t respPar[1];
uint8_t key[4] = {0x00};
memcpy(key, keybytes, 4);
len = mifare_sendcmd_short(NULL, 1, 0x1A, 0x00, receivedAnswer,receivedAnswerPar ,NULL);
if (len != 11) {
if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
Dbprintf("EV1 Auth : %02x%02x%02x%02x", key[0], key[1], key[2], key[3]);
len = mifare_sendcmd_short_mfuev1auth(NULL, 0, 0x1B, key, resp, respPar, NULL);
if (len != 4) {
if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x %u", resp[0], len);
OnError(1);
return 1;
}
if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {
Dbprintf("Auth1 Resp: %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
receivedAnswer[0],receivedAnswer[1],receivedAnswer[2],receivedAnswer[3],receivedAnswer[4],
receivedAnswer[5],receivedAnswer[6],receivedAnswer[7],receivedAnswer[8],receivedAnswer[9],
receivedAnswer[10]);
}
memcpy(blockData, receivedAnswer, 11);
if (MF_DBGLEVEL >= MF_DBG_EXTENDED)
Dbprintf("Auth Resp: %02x%02x%02x%02x", resp[0],resp[1],resp[2],resp[3]);
memcpy(pack, resp, 4);
return 0;
}
int mifare_ultra_auth2(uint8_t *key, uint8_t *blockData){
int mifare_ultra_auth(uint8_t *keybytes){
uint16_t len;
uint8_t receivedAnswer[MAX_FRAME_SIZE];
uint8_t receivedAnswerPar[MAX_PARITY_SIZE];
// 3des2k
uint8_t random_a[8] = {1,1,1,1,1,1,1,1};
uint8_t random_b[8] = {0x00};
uint8_t enc_random_b[8] = {0x00};
uint8_t rnd_ab[16] = {0x00};
uint8_t IV[8] = {0x00};
uint8_t key[16] = {0x00};
memcpy(key, keybytes, 16);
len = mifare_sendcmd_short_mfucauth(NULL, 1, 0xAF, key, receivedAnswer, receivedAnswerPar, NULL);
uint16_t len;
uint8_t resp[19] = {0x00};
uint8_t respPar[3] = {0,0,0};
// REQUEST AUTHENTICATION
len = mifare_sendcmd_short(NULL, 1, 0x1A, 0x00, resp, respPar ,NULL);
if (len != 11) {
if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", resp[0]);
OnError(1);
return 1;
}
// tag nonce.
memcpy(enc_random_b,resp+1,8);
// decrypt nonce.
tdes_2key_dec(random_b, enc_random_b, sizeof(random_b), key, IV );
rol(random_b,8);
memcpy(rnd_ab ,random_a,8);
memcpy(rnd_ab+8,random_b,8);
if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {
Dbprintf("Auth2 Resp: %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
receivedAnswer[0],receivedAnswer[1],receivedAnswer[2],receivedAnswer[3],receivedAnswer[4],
receivedAnswer[5],receivedAnswer[6],receivedAnswer[7],receivedAnswer[8],receivedAnswer[9],
receivedAnswer[10]);
Dbprintf("enc_B: %02x %02x %02x %02x %02x %02x %02x %02x",
enc_random_b[0],enc_random_b[1],enc_random_b[2],enc_random_b[3],enc_random_b[4],enc_random_b[5],enc_random_b[6],enc_random_b[7]);
Dbprintf(" B: %02x %02x %02x %02x %02x %02x %02x %02x",
random_b[0],random_b[1],random_b[2],random_b[3],random_b[4],random_b[5],random_b[6],random_b[7]);
Dbprintf("rnd_ab: %02x %02x %02x %02x %02x %02x %02x %02x",
rnd_ab[0],rnd_ab[1],rnd_ab[2],rnd_ab[3],rnd_ab[4],rnd_ab[5],rnd_ab[6],rnd_ab[7]);
Dbprintf("rnd_ab: %02x %02x %02x %02x %02x %02x %02x %02x",
rnd_ab[8],rnd_ab[9],rnd_ab[10],rnd_ab[11],rnd_ab[12],rnd_ab[13],rnd_ab[14],rnd_ab[15] );
}
// encrypt out, in, length, key, iv
tdes_2key_enc(rnd_ab, rnd_ab, sizeof(rnd_ab), key, enc_random_b);
len = mifare_sendcmd_short_mfucauth(NULL, 1, 0xAF, rnd_ab, resp, respPar, NULL);
if (len != 11) {
if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", resp[0]);
OnError(1);
return 1;
}
uint8_t enc_resp[8] = { 0,0,0,0,0,0,0,0 };
uint8_t resp_random_a[8] = { 0,0,0,0,0,0,0,0 };
memcpy(enc_resp, resp+1, 8);
// decrypt out, in, length, key, iv
tdes_2key_dec(resp_random_a, enc_resp, 8, key, enc_random_b);
if ( memcmp(resp_random_a, random_a, 8) != 0 ) {
if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("failed authentication");
return 1;
}
if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {
Dbprintf("e_AB: %02x %02x %02x %02x %02x %02x %02x %02x",
rnd_ab[0],rnd_ab[1],rnd_ab[2],rnd_ab[3],
rnd_ab[4],rnd_ab[5],rnd_ab[6],rnd_ab[7]);
Dbprintf("e_AB: %02x %02x %02x %02x %02x %02x %02x %02x",
rnd_ab[8],rnd_ab[9],rnd_ab[10],rnd_ab[11],
rnd_ab[12],rnd_ab[13],rnd_ab[14],rnd_ab[15]);
Dbprintf("a: %02x %02x %02x %02x %02x %02x %02x %02x",
random_a[0],random_a[1],random_a[2],random_a[3],
random_a[4],random_a[5],random_a[6],random_a[7]);
Dbprintf("b: %02x %02x %02x %02x %02x %02x %02x %02x",
resp_random_a[0],resp_random_a[1],resp_random_a[2],resp_random_a[3],
resp_random_a[4],resp_random_a[5],resp_random_a[6],resp_random_a[7]);
}
memcpy(blockData, receivedAnswer, 11);
return 0;
}