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chg: 'hf mf sim' @piwi's changes part 1

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This commit is contained in:
iceman1001 2017-11-11 22:41:52 +01:00
parent 92f37c4c22
commit f906cb7f89
2 changed files with 23 additions and 9 deletions
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21
armsrc/mifareutil.c
View file

@ -13,23 +13,27 @@
int MF_DBGLEVEL = MF_DBG_ALL;
// crypto1 helpers
void mf_crypto1_decrypt(struct Crypto1State *pcs, uint8_t *data, int len){
void mf_crypto1_decryptEx(struct Crypto1State *pcs, uint8_t *data_in, int len, uint8_t *data_out){
uint8_t bt = 0;
int i;
if (len != 1) {
for (i = 0; i < len; i++)
data[i] = crypto1_byte(pcs, 0x00, 0) ^ data[i];
data_out[i] = crypto1_byte(pcs, 0x00, 0) ^ data_in[i];
} else {
bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data[0], 0)) << 0;
bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data[0], 1)) << 1;
bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data[0], 2)) << 2;
bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data[0], 3)) << 3;
data[0] = bt;
bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data_in[0], 0)) << 0;
bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data_in[0], 1)) << 1;
bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data_in[0], 2)) << 2;
bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data_in[0], 3)) << 3;
data_out[0] = bt;
}
return;
}
void mf_crypto1_decrypt(struct Crypto1State *pcs, uint8_t *data, int len){
mf_crypto1_decryptEx(pcs, data, len, data);
}
void mf_crypto1_encrypt(struct Crypto1State *pcs, uint8_t *data, uint16_t len, uint8_t *par) {
uint8_t bt = 0;
int i;
@ -62,8 +66,7 @@ int mifare_sendcmd(uint8_t cmd, uint8_t* data, uint8_t data_size, uint8_t* answe
ReaderTransmit(dcmd, sizeof(dcmd), timing);
int len = ReaderReceive(answer, answer_parity);
if(!len) {
if (MF_DBGLEVEL >= MF_DBG_ERROR)
Dbprintf("%02X Cmd failed. Card timeout.", cmd);
if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("%02X Cmd failed. Card timeout.", cmd);
len = ReaderReceive(answer,answer_parity);
}
return len;

11
armsrc/mifareutil.h
View file

@ -30,6 +30,16 @@
#define AUTH_FIRST 0
#define AUTH_NESTED 2
#define AUTHENTICATION_TIMEOUT 848 // card times out 1ms after wrong authentication (according to NXP documentation)
#define PRE_AUTHENTICATION_LEADTIME 400 // some (non standard) cards need a pause after select before they are ready for first authentication
// mifare 4bit card answers
#define CARD_ACK 0x0A // 1010 - ACK
#define CARD_NACK_NA 0x04 // 0100 - NACK, not allowed (command not allowed)
#define CARD_NACK_TR 0x05 // 0101 - NACK, transmission error
//mifare emulator states
#define MFEMUL_NOFIELD 0
#define MFEMUL_IDLE 1
@ -75,6 +85,7 @@ int mifare_desfire_des_auth2(uint32_t uid, uint8_t *key, uint8_t *blockData);
// crypto functions
void mf_crypto1_decrypt(struct Crypto1State *pcs, uint8_t *receivedCmd, int len);
void mf_crypto1_decryptEx(struct Crypto1State *pcs, uint8_t *data_in, int len, uint8_t *data_out);
void mf_crypto1_encrypt(struct Crypto1State *pcs, uint8_t *data, uint16_t len, uint8_t *par);
uint8_t mf_crypto1_encrypt4bit(struct Crypto1State *pcs, uint8_t data);