CHG: added a verification to see if the found candidate key was able to validate against tag. If not ok, start darkside attack again.
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@@ -239,6 +239,17 @@ start:
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c.arg[0] = false;
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goto start;
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} else {
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// nonce2key found a candidate key. Lets verify it.
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uint8_t keyblock[] = {0,0,0,0,0,0};
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num_to_bytes(r_key, 6, keyblock);
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uint64_t key64 = 0;
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int res = mfCheckKeys(blockNo, keytype - 0x60 , false, 1, keyblock, &key64);
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if ( res > 0 ) {
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PrintAndLog("Candidate Key found (%012"llx")", r_key);
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PrintAndLog("Failing is expected to happen. Trying again ...");
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goto start;
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}
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PrintAndLog("Found valid key: %012"llx" \n", r_key);
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}
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END:
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