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secure channel sketch

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merlokk
2021-07-04 17:49:11 +03:00
parent fce8affd48
commit aa8c4b3dca
1 changed files with 19 additions and 2 deletions
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21
client/src/mifare/desfirecore.c
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@@ -525,15 +525,32 @@ static int DesfireExchangeISO(bool activate_field, DesfireContext *ctx, uint8_t
return PM3_SUCCESS;
}
static void DesfireSecureChannelEncode(DesfireContext *ctx, uint8_t cmd, uint8_t *srcdata, size_t srcdatalen, uint8_t *dstdata, size_t *dstdatalen) {
memcpy(dstdata, srcdata, srcdatalen);
*dstdatalen = srcdatalen;
}
static void DesfireSecureChannelDecode(DesfireContext *ctx, uint8_t *srcdata, size_t srcdatalen, uint8_t respcode, uint8_t *dstdata, size_t *dstdatalen) {
memcpy(dstdata, srcdata, srcdatalen);
*dstdatalen = srcdatalen;
}
int DesfireExchangeEx(bool activate_field, DesfireContext *ctx, uint8_t cmd, uint8_t *data, size_t datalen, uint8_t *respcode, uint8_t *resp, size_t *resplen, bool enable_chaining, size_t splitbysize) {
int res = PM3_SUCCESS;
uint8_t databuf[250 * 5] = {0};
size_t databuflen = 0;
switch(ctx->cmdSet) {
case DCCNative:
res = DesfireExchangeNative(activate_field, ctx, cmd, data, datalen, respcode, resp, resplen, enable_chaining, splitbysize);
DesfireSecureChannelEncode(ctx, cmd, data, datalen, databuf, &databuflen);
res = DesfireExchangeNative(activate_field, ctx, cmd, databuf, databuflen, respcode, databuf, &databuflen, enable_chaining, splitbysize);
DesfireSecureChannelDecode(ctx, databuf, databuflen, *respcode, resp, resplen);
break;
case DCCNativeISO:
res = DesfireExchangeISO(activate_field, ctx, cmd, data, datalen, respcode, resp, resplen, enable_chaining, splitbysize);
DesfireSecureChannelEncode(ctx, cmd, data, datalen, databuf, &databuflen);
res = DesfireExchangeISO(activate_field, ctx, cmd, databuf, databuflen, respcode, databuf, &databuflen, enable_chaining, splitbysize);
DesfireSecureChannelDecode(ctx, databuf, databuflen, *respcode, resp, resplen);
break;
case DCCISO:
return PM3_EAPDU_FAIL;