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add crc32 check

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This commit is contained in:
merlokk
2021-07-09 01:26:47 +03:00
parent cf7949c1f8
commit 0fa708acb2
2 changed files with 7 additions and 0 deletions
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6
client/src/mifare/desfire_crypto.c
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@@ -976,6 +976,12 @@ void desfire_crc32_append(uint8_t *data, const size_t len) {
crc32_ex(data, len, data + len);
}
bool desfire_crc32_check(uint8_t *data, const size_t len, uint8_t *crc) {
uint8_t ccrc[4] = {0};
crc32_ex(data, len, ccrc);
return (memcmp(ccrc, crc, 4) == 0);
}
void iso14443a_crc_append(uint8_t *data, size_t len) {
return compute_crc(CRC_14443_A, data, len, data + len, data + len + 1);
}

1
client/src/mifare/desfire_crypto.h
View File

@@ -149,6 +149,7 @@ void mifare_kdf_an10922(const desfirekey_t key, const uint8_t *data, size_t len)
void desfire_crc32(const uint8_t *data, const size_t len, uint8_t *crc);
void desfire_crc32_append(uint8_t *data, const size_t len);
bool desfire_crc32_check(uint8_t *data, const size_t len, uint8_t *crc);
void iso14443a_crc_append(uint8_t *data, size_t len);
void iso14443a_crc(uint8_t *data, size_t len, uint8_t *pbtCrc);
#endif