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fix upper byte U2F for backwards compatibility

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Conor Patrick
2019-02-17 15:33:24 -05:00
parent 596c6c1077
commit 46d7be865d
2 changed files with 7 additions and 3 deletions
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4
fido2/u2f.c
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@@ -224,7 +224,7 @@ static int16_t u2f_authenticate(struct u2f_authenticate_request * req, uint8_t c
}
count = ctap_atomic_count(0);
hash[0] = (count >> 24) & 0xff;
hash[0] = 0xff;
hash[1] = (count >> 16) & 0xff;
hash[2] = (count >> 8) & 0xff;
hash[3] = (count >> 0) & 0xff;
@@ -241,7 +241,7 @@ static int16_t u2f_authenticate(struct u2f_authenticate_request * req, uint8_t c
crypto_ecc256_sign(hash, 32, sig);
u2f_response_writeback(&up,1);
hash[0] = (count >> 24) & 0xff;
hash[0] = 0xff;
hash[1] = (count >> 16) & 0xff;
hash[2] = (count >> 8) & 0xff;
hash[3] = (count >> 0) & 0xff;