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merlokk 2021-08-09 12:00:55 +03:00
commit 16781248cb
1 changed files with 5 additions and 3 deletions
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8
client/src/mifare/desfirecrypto.c
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@ -346,10 +346,12 @@ void DesfireCryptoCMAC(DesfireContext *ctx, uint8_t *data, size_t len, uint8_t *
// This function is almot like cmac(...). but with some key differences.
void MifareKdfAn10922(DesfireContext *ctx, DesfireCryptoOpKeyType key_type, const uint8_t *data, size_t len) {
int kbs = desfire_get_key_block_length(ctx->keyType); // 8 or 16
if (ctx == NULL || kbs == 0 || data == NULL || len < 1 || len > 31) {
if (ctx == NULL || data == NULL || len < 1 || len > 31)
return;
int kbs = desfire_get_key_block_length(ctx->keyType); // 8 or 16
if (kbs == 0)
return;
}
uint8_t cmac[DESFIRE_MAX_CRYPTO_BLOCK_SIZE * 3] = {0};
uint8_t buffer[DESFIRE_MAX_CRYPTO_BLOCK_SIZE * 3] = {0};