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2 changed files with 6 additions and 7 deletions
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@ -241,7 +241,6 @@ void Desfire_session_key_new(const uint8_t rnda[], const uint8_t rndb[], desfire
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}
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}
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}
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}
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static void xor(const uint8_t *ivect, uint8_t *data, const size_t len);
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static size_t key_macing_length(desfirekey_t key);
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static size_t key_macing_length(desfirekey_t key);
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// iceman, see memxor inside string.c, dest/src swapped..
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// iceman, see memxor inside string.c, dest/src swapped..
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@ -263,20 +262,20 @@ void cmac_generate_subkeys(desfirekey_t key, MifareCryptoDirection direction) {
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mifare_cypher_blocks_chained(NULL, key, ivect, l, kbs, direction, MCO_ENCYPHER);
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mifare_cypher_blocks_chained(NULL, key, ivect, l, kbs, direction, MCO_ENCYPHER);
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bool xor = false;
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bool txor = false;
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// Used to compute CMAC on complete blocks
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// Used to compute CMAC on complete blocks
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memcpy(key->cmac_sk1, l, kbs);
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memcpy(key->cmac_sk1, l, kbs);
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xor = l[0] & 0x80;
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txor = l[0] & 0x80;
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lsl(key->cmac_sk1, kbs);
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lsl(key->cmac_sk1, kbs);
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if (xor)
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if (txor)
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key->cmac_sk1[kbs - 1] ^= R;
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key->cmac_sk1[kbs - 1] ^= R;
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// Used to compute CMAC on the last block if non-complete
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// Used to compute CMAC on the last block if non-complete
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memcpy(key->cmac_sk2, key->cmac_sk1, kbs);
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memcpy(key->cmac_sk2, key->cmac_sk1, kbs);
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xor = key->cmac_sk1[0] & 0x80;
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txor = key->cmac_sk1[0] & 0x80;
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lsl(key->cmac_sk2, kbs);
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lsl(key->cmac_sk2, kbs);
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if (xor)
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if (txor)
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key->cmac_sk2[kbs - 1] ^= R;
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key->cmac_sk2[kbs - 1] ^= R;
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}
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}
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@ -130,7 +130,7 @@ size_t enciphered_data_length(const desfiretag_t tag, const size_t nbytes, int c
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void cmac_generate_subkeys(desfirekey_t key, MifareCryptoDirection direction);
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void cmac_generate_subkeys(desfirekey_t key, MifareCryptoDirection direction);
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void cmac(const desfirekey_t key, uint8_t *ivect, const uint8_t *data, size_t len, uint8_t *cmac);
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void cmac(const desfirekey_t key, uint8_t *ivect, const uint8_t *data, size_t len, uint8_t *cmac);
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void mifare_kdf_an10922(const desfirekey_t key, const uint8_t *data, size_t dataLen);
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void mifare_kdf_an10922(const desfirekey_t key, const uint8_t *data, size_t len);
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void desfire_crc32(const uint8_t *data, const size_t len, uint8_t *crc);
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void desfire_crc32(const uint8_t *data, const size_t len, uint8_t *crc);
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void desfire_crc32_append(uint8_t *data, const size_t len);
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void desfire_crc32_append(uint8_t *data, const size_t len);
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