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change data available check in hf mf sim on device side.

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This commit is contained in:
iceman1001 2024-09-14 18:37:56 +02:00
commit 34e00146c6
8 changed files with 131 additions and 63 deletions
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51
armsrc/desfire_crypto.c
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@ -31,7 +31,7 @@
#include "crc32.h"
#include "crc.h"
#include "crc16.h" // crc16 ccitt
#include "printf.h"
#include "nprintf.h"
#include "iso14443a.h"
#include "dbprint.h"
#include "BigBuf.h"
@ -65,25 +65,32 @@ void des_decrypt(void *out, const void *in, const void *key) {
mbedtls_des_crypt_ecb(&ctx, in, out);
}
void tdes_nxp_receive(const void *in, void *out, size_t length, const void *key, unsigned char iv[8], int keymode) {
if (length % 8) return;
if (keymode == 2)
mbedtls_des3_set2key_dec(&ctx3, key);
else
mbedtls_des3_set3key_dec(&ctx3, key);
void tdes_nxp_receive(const void *in, void *out, size_t length, const void *key, uint8_t *iv, int keymode) {
// must be even blocks of 8 bytes.
if (length % 8) {
return;
}
if (keymode == 2) {
mbedtls_des3_set2key_dec(&ctx3, key);
} else {
mbedtls_des3_set3key_dec(&ctx3, key);
}
uint8_t i;
unsigned char temp[8];
uint8_t *tin = (uint8_t *) in;
uint8_t *tout = (uint8_t *) out;
while (length > 0) {
memcpy(temp, tin, 8);
mbedtls_des3_crypt_ecb(&ctx3, tin, tout);
for (i = 0; i < 8; i++)
tout[i] = (unsigned char)(tout[i] ^ iv[i]);
for (uint8_t i = 0; i < 8; i++) {
tout[i] ^= iv[i];
}
memcpy(iv, temp, 8);
@ -93,20 +100,26 @@ void tdes_nxp_receive(const void *in, void *out, size_t length, const void *key,
}
}
void tdes_nxp_send(const void *in, void *out, size_t length, const void *key, unsigned char iv[8], int keymode) {
if (length % 8) return;
if (keymode == 2)
mbedtls_des3_set2key_enc(&ctx3, key);
else
mbedtls_des3_set3key_enc(&ctx3, key);
void tdes_nxp_send(const void *in, void *out, size_t length, const void *key, uint8_t *iv, int keymode) {
// must be even blocks of 8 bytes.
if (length % 8) {
return;
}
if (keymode == 2) {
mbedtls_des3_set2key_enc(&ctx3, key);
} else {
mbedtls_des3_set3key_enc(&ctx3, key);
}
uint8_t i;
uint8_t *tin = (uint8_t *) in;
uint8_t *tout = (uint8_t *) out;
while (length > 0) {
for (i = 0; i < 8; i++) {
tin[i] = (unsigned char)(tin[i] ^ iv[i]);
for (uint8_t i = 0; i < 8; i++) {
tin[i] ^= iv[i];
}
mbedtls_des3_crypt_ecb(&ctx3, tin, tout);