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speed up public key derivation slightly for nfc

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Conor Patrick
2019-08-20 21:06:37 +08:00
parent d931954a13
commit adcbd3aeb8
2 changed files with 4 additions and 2 deletions
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4
fido2/ctap.c
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@@ -256,7 +256,9 @@ static int ctap_generate_cose_key(CborEncoder * cose_key, uint8_t * hmac_input,
switch(algtype)
{
case COSE_ALG_ES256:
if (device_is_nfc() == NFC_IS_ACTIVE) device_set_clock_rate(DEVICE_LOW_POWER_FAST);
crypto_ecc256_derive_public_key(hmac_input, len, x, y);
if (device_is_nfc() == NFC_IS_ACTIVE) device_set_clock_rate(DEVICE_LOW_POWER_IDLE);
break;
default:
printf2(TAG_ERR,"Error, COSE alg %d not supported\n", algtype);
@@ -1969,7 +1971,9 @@ int8_t ctap_load_key(uint8_t index, uint8_t * key)
static void ctap_reset_key_agreement()
{
if (device_is_nfc() == NFC_IS_ACTIVE) device_set_clock_rate(DEVICE_LOW_POWER_FAST);
crypto_ecc256_make_key_pair(KEY_AGREEMENT_PUB, KEY_AGREEMENT_PRIV);
if (device_is_nfc() == NFC_IS_ACTIVE) device_set_clock_rate(DEVICE_LOW_POWER_IDLE);
}
void ctap_reset()