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iceman1001 2019-04-09 20:43:09 +02:00
commit 8c4f8eaeca
1 changed files with 5 additions and 8 deletions
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13
armsrc/mifareutil.c
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@ -14,13 +14,11 @@ int MF_DBGLEVEL = MF_DBG_ERROR;
// crypto1 helpers // crypto1 helpers
void mf_crypto1_decryptEx(struct Crypto1State *pcs, uint8_t *data_in, int len, uint8_t *data_out) { 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) { if (len != 1) {
for (i = 0; i < len; i++) for (int i = 0; i < len; i++)
data_out[i] = crypto1_byte(pcs, 0x00, 0) ^ data_in[i]; data_out[i] = crypto1_byte(pcs, 0x00, 0) ^ data_in[i];
} else { } else {
uint8_t bt = 0;
bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data_in[0], 0)) << 0; 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], 1)) << 1;
bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data_in[0], 2)) << 2; bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data_in[0], 2)) << 2;
@ -39,12 +37,11 @@ void mf_crypto1_encrypt(struct Crypto1State *pcs, uint8_t *data, uint16_t len, u
} }
void mf_crypto1_encryptEx(struct Crypto1State *pcs, uint8_t *data_in, uint8_t *keystream, uint8_t *data_out, uint16_t len, uint8_t *par) { void mf_crypto1_encryptEx(struct Crypto1State *pcs, uint8_t *data_in, uint8_t *keystream, uint8_t *data_out, uint16_t len, uint8_t *par) {
uint8_t bt = 0;
int i; int i;
par[0] = 0; par[0] = 0;
for (i = 0; i < len; i++) { for (i = 0; i < len; i++) {
bt = data_in[i]; uint8_t bt = data_in[i];
data_out[i] = crypto1_byte(pcs, keystream ? keystream[i] : 0x00, 0) ^ data_in[i]; data_out[i] = crypto1_byte(pcs, keystream ? keystream[i] : 0x00, 0) ^ data_in[i];
if ((i & 0x0007) == 0) if ((i & 0x0007) == 0)
par[ i >> 3 ] = 0; par[ i >> 3 ] = 0;
@ -78,7 +75,7 @@ int mifare_sendcmd(uint8_t cmd, uint8_t *data, uint8_t data_size, uint8_t *answe
// send 2 byte commands // send 2 byte commands
int mifare_sendcmd_short(struct Crypto1State *pcs, uint8_t crypted, uint8_t cmd, uint8_t data, uint8_t *answer, uint8_t *answer_parity, uint32_t *timing) { int mifare_sendcmd_short(struct Crypto1State *pcs, uint8_t crypted, uint8_t cmd, uint8_t data, uint8_t *answer, uint8_t *answer_parity, uint32_t *timing) {
uint16_t pos, res; uint16_t pos;
uint8_t dcmd[4] = {cmd, data, 0x00, 0x00}; uint8_t dcmd[4] = {cmd, data, 0x00, 0x00};
uint8_t ecmd[4] = {0x00, 0x00, 0x00, 0x00}; uint8_t ecmd[4] = {0x00, 0x00, 0x00, 0x00};
uint8_t par[1] = {0x00}; // 1 Byte parity is enough here uint8_t par[1] = {0x00}; // 1 Byte parity is enough here
@ -102,7 +99,7 @@ int mifare_sendcmd_short(struct Crypto1State *pcs, uint8_t crypted, uint8_t cmd,
if (crypted == CRYPT_ALL) { if (crypted == CRYPT_ALL) {
if (len == 1) { if (len == 1) {
res = 0; uint16_t res = 0;
res |= (crypto1_bit(pcs, 0, 0) ^ BIT(answer[0], 0)) << 0; res |= (crypto1_bit(pcs, 0, 0) ^ BIT(answer[0], 0)) << 0;
res |= (crypto1_bit(pcs, 0, 0) ^ BIT(answer[0], 1)) << 1; res |= (crypto1_bit(pcs, 0, 0) ^ BIT(answer[0], 1)) << 1;
res |= (crypto1_bit(pcs, 0, 0) ^ BIT(answer[0], 2)) << 2; res |= (crypto1_bit(pcs, 0, 0) ^ BIT(answer[0], 2)) << 2;