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fix 2tdea/d40 authentication

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This commit is contained in:
merlokk 2021-07-16 20:45:32 +03:00
commit 6a6ec86791
2 changed files with 14 additions and 3 deletions
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2
client/src/cmdhfmfdes.c
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@ -4986,7 +4986,7 @@ static int CmdHF14ADesChangeKey(const char *Cmd) {
PrintAndLogEx(INFO, _CYAN_("Changing PICC key"));
PrintAndLogEx(INFO, "auth key %d: %s [%d] %s", dctx.keyNum, CLIGetOptionListStr(DesfireAlgoOpts, dctx.keyType), desfire_get_key_length(dctx.keyType), sprint_hex(dctx.key, desfire_get_key_length(dctx.keyType)));
PrintAndLogEx(INFO, "changing key number " _YELLOW_("0x%02x") " (%d)", newkeynum, newkeynum);
PrintAndLogEx(INFO, "old key: %s [%d] %s", CLIGetOptionListStr(DesfireAlgoOpts, newkeytype), desfire_get_key_length(oldkeytype), sprint_hex(oldkey, desfire_get_key_length(oldkeytype)));
PrintAndLogEx(INFO, "old key: %s [%d] %s", CLIGetOptionListStr(DesfireAlgoOpts, oldkeytype), desfire_get_key_length(oldkeytype), sprint_hex(oldkey, desfire_get_key_length(oldkeytype)));
PrintAndLogEx(INFO, "new key: %s [%d] %s", CLIGetOptionListStr(DesfireAlgoOpts, newkeytype), desfire_get_key_length(newkeytype), sprint_hex(newkey, desfire_get_key_length(newkeytype)));
if (newkeyver < 0x100 || newkeytype == T_AES)
PrintAndLogEx(INFO, "new key version: 0x%02x", newkeyver & 0x00);

15
client/src/mifare/desfirecore.c
View file

@ -764,7 +764,15 @@ int DesfireAuthenticate(DesfireContext *dctx, DesfireSecureChannel secureChannel
des_decrypt(encRndB, rotRndB, key->data);
memcpy(both + rndlen, encRndB, rndlen);
} else if (dctx->keyType == T_3DES) {
//TODO
des3_decrypt(encRndA, RndA, key->data, 2);
memcpy(both, encRndA, rndlen);
for (uint32_t x = 0; x < rndlen; x++) {
rotRndB[x] = rotRndB[x] ^ encRndA[x];
}
des3_decrypt(encRndB, rotRndB, key->data, 2);
memcpy(both + rndlen, encRndB, rndlen);
}
} else if (secureChannel == DACEV1 && dctx->keyType != T_AES) {
if (dctx->keyType == T_DES) {
@ -857,7 +865,10 @@ int DesfireAuthenticate(DesfireContext *dctx, DesfireSecureChannel secureChannel
if (secureChannel == DACEV1)
des_decrypt_cbc(encRndA, encRndA, rndlen, key->data, IV);
} else if (dctx->keyType == T_3DES)
tdes_nxp_receive(encRndA, encRndA, rndlen, key->data, IV, 2);
if (secureChannel == DACd40)
des3_decrypt(encRndA, encRndA, key->data, 2);
else
tdes_nxp_receive(encRndA, encRndA, rndlen, key->data, IV, 2);
else if (dctx->keyType == T_3K3DES)
tdes_nxp_receive(encRndA, encRndA, rndlen, key->data, IV, 3);
else if (dctx->keyType == T_AES) {