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more work towards iclass elite dumping.. not quite finished yet though :(

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This commit is contained in:
Martin Holst Swende 2014-06-30 00:20:40 +02:00
commit 9b82de75f4
4 changed files with 55 additions and 33 deletions
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2
client/loclass/elite_crack.h
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@ -68,7 +68,7 @@ int bruteforceItem(dumpdata item, uint16_t keytable[]);
* @param k output
*/
void hash1(uint8_t csn[] , uint8_t k[]);
void hash2(uint8_t *key64, uint8_t *outp_keytable);
/**
* From dismantling iclass-paper:
* Assume that an adversary somehow learns the first 16 bytes of hash2(K_cus ), i.e., y [0] and z [0] .

4
client/loclass/ikeys.c
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@ -390,8 +390,8 @@ void diversifyKey(uint8_t csn[8], uint8_t key[8], uint8_t div_key[8])
des_crypt_ecb(&ctx_enc,csn, crypted_csn);
//Calculate HASH0(DES))
uint64_t crypt_csn = x_bytes_to_num(crypted_csn, 8);
uint64_t crypted_csn_swapped = swapZvalues(crypt_csn);
uint64_t crypt_csn = x_bytes_to_num(crypted_csn, 8);
//uint64_t crypted_csn_swapped = swapZvalues(crypt_csn);
hash0(crypt_csn,div_key);
}