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lrp maced channel fully works

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This commit is contained in:
merlokk 2021-08-19 16:43:28 +03:00
parent 4ae1912772
commit e021870ed8
2 changed files with 62 additions and 1 deletions
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3
client/src/cmdhfmfdes.c
View file

@ -3164,7 +3164,8 @@ static int CmdHF14ADesGetFileISOIDs(const char *Cmd) {
"Get File IDs list from card. Master key needs to be provided or flag --no-auth set.",
"hf mfdes getfileisoids --aid 123456 -> execute with defaults from `default` command\n"
"hf mfdes getfileisoids -n 0 -t des -k 0000000000000000 -f none --aid 123456 -> execute with default factory setup\n"
"hf mfdes getfileisoids --appisoid df01 -> get file iso ids from Desfire Light with factory card settings");
"hf mfdes getfileisoids --appisoid df01 -> get iso file ids from Desfire Light with factory card settings\n"
"hf mfdes getfileisoids --appisoid df01 -s lrp -t aes -> get iso file ids from Desfire Light via lrp channel with default key authentication");
void *argtable[] = {
arg_param_begin,

60
client/src/mifare/desfiresecurechan.c
View file

@ -608,6 +608,64 @@ static void DesfireSecureChannelDecodeEV2(DesfireContext *ctx, uint8_t *srcdata,
}
}
static void DesfireSecureChannelDecodeLRP(DesfireContext *ctx, uint8_t *srcdata, size_t srcdatalen, uint8_t respcode, uint8_t *dstdata, size_t *dstdatalen) {
ctx->cmdCntr++;
memcpy(dstdata, srcdata, srcdatalen);
*dstdatalen = srcdatalen;
uint8_t cmac[DESFIRE_MAX_CRYPTO_BLOCK_SIZE] = {0};
if (ctx->commMode == DCMMACed) {
if (srcdatalen < DesfireGetMACLength(ctx)) {
memcpy(dstdata, srcdata, srcdatalen);
*dstdatalen = srcdatalen;
return;
}
memcpy(dstdata, srcdata, srcdatalen - DesfireGetMACLength(ctx));
*dstdatalen = srcdatalen - DesfireGetMACLength(ctx);
DesfireLRPCalcCMAC(ctx, 0x00, srcdata, *dstdatalen, cmac);
if (memcmp(&srcdata[*dstdatalen], cmac, DesfireGetMACLength(ctx)) != 0) {
PrintAndLogEx(WARNING, "Received MAC is not match with calculated");
PrintAndLogEx(INFO, " received MAC: %s", sprint_hex(&srcdata[*dstdatalen], DesfireGetMACLength(ctx)));
PrintAndLogEx(INFO, " calculated MAC: %s", sprint_hex(cmac, DesfireGetMACLength(ctx)));
} else {
if (GetAPDULogging())
PrintAndLogEx(INFO, "Received MAC OK");
}
} else if (ctx->commMode == DCMEncrypted || ctx->commMode == DCMEncryptedWithPadding) {
if (srcdatalen < DesfireGetMACLength(ctx)) {
memcpy(dstdata, srcdata, srcdatalen);
*dstdatalen = srcdatalen;
return;
}
*dstdatalen = srcdatalen - DesfireGetMACLength(ctx);
DesfireLRPCalcCMAC(ctx, 0x00, srcdata, *dstdatalen, cmac);
if (memcmp(&srcdata[*dstdatalen], cmac, DesfireGetMACLength(ctx)) != 0) {
PrintAndLogEx(WARNING, "Received MAC is not match with calculated");
PrintAndLogEx(INFO, " received MAC: %s", sprint_hex(&srcdata[*dstdatalen], DesfireGetMACLength(ctx)));
PrintAndLogEx(INFO, " calculated MAC: %s", sprint_hex(cmac, DesfireGetMACLength(ctx)));
} else {
if (GetAPDULogging())
PrintAndLogEx(INFO, "Received MAC OK");
}
if (*dstdatalen >= desfire_get_key_block_length(ctx->keyType)) {
DesfireEV2FillIV(ctx, false, NULL); // fill response IV to ctx
DesfireCryptoEncDec(ctx, DCOSessionKeyEnc, srcdata, *dstdatalen, dstdata, false);
size_t puredatalen = FindISO9797M2PaddingDataLen(dstdata, *dstdatalen);
if (puredatalen != 0) {
*dstdatalen = puredatalen;
} else {
PrintAndLogEx(WARNING, "Padding search error.");
}
}
}
}
static void DesfireISODecode(DesfireContext *ctx, uint8_t *srcdata, size_t srcdatalen, uint8_t *dstdata, size_t *dstdatalen) {
memcpy(dstdata, srcdata, srcdatalen);
*dstdatalen = srcdatalen;
@ -652,6 +710,8 @@ void DesfireSecureChannelDecode(DesfireContext *ctx, uint8_t *srcdata, size_t sr
DesfireSecureChannelDecodeEV2(ctx, srcdata, srcdatalen, respcode, dstdata, dstdatalen);
break;
case DACLRP:
DesfireSecureChannelDecodeLRP(ctx, srcdata, srcdatalen, respcode, dstdata, dstdatalen);
break;
case DACNone:
memcpy(dstdata, srcdata, srcdatalen);
*dstdatalen = srcdatalen;