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Update u2f.c

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This commit is contained in:
Conor Patrick 2019-01-08 21:37:15 -05:00
parent e7f01f4e55
commit 9ff52fcdb4
1 changed files with 15 additions and 8 deletions
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13
fido2/u2f.c
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@ -234,12 +234,15 @@ static int16_t u2f_authenticate(struct u2f_authenticate_request * req, uint8_t c
}
count = ctap_atomic_count(0);
hash[0] = (count >> 24) & 0xff;
hash[1] = (count >> 16) & 0xff;
hash[2] = (count >> 8) & 0xff;
hash[3] = (count >> 0) & 0xff;
crypto_sha256_init();
crypto_sha256_update(req->app,32);
crypto_sha256_update(&up,1);
crypto_sha256_update((uint8_t *)&count,4);
crypto_sha256_update(hash,4);
crypto_sha256_update(req->chal,32);
crypto_sha256_final(hash);
@ -248,7 +251,11 @@ static int16_t u2f_authenticate(struct u2f_authenticate_request * req, uint8_t c
crypto_ecc256_sign(hash, 32, sig);
u2f_response_writeback(&up,1);
u2f_response_writeback((uint8_t *)&count,4);
hash[0] = (count >> 24) & 0xff;
hash[1] = (count >> 16) & 0xff;
hash[2] = (count >> 8) & 0xff;
hash[3] = (count >> 0) & 0xff;
u2f_response_writeback(hash,4);
dump_signature_der(sig);
return U2F_SW_NO_ERROR;