Revision aa211c2d5a40dd6969fe8a469fcadfd27e8c8fe3 authored by Jonathan Protzenko on 24 April 2020, 21:11:09 UTC, committed by Jonathan Protzenko on 24 April 2020, 21:11:09 UTC
1 parent 6f91754
EverCrypt_Curve25519.c
/* MIT License
*
* Copyright (c) 2016-2020 INRIA, CMU and Microsoft Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "EverCrypt_Curve25519.h"
static inline bool has_adx_bmi2()
{
bool has_bmi2 = EverCrypt_AutoConfig2_has_bmi2();
bool has_adx = EverCrypt_AutoConfig2_has_adx();
return has_bmi2 && has_adx;
}
void EverCrypt_Curve25519_secret_to_public(uint8_t *pub, uint8_t *priv)
{
#if EVERCRYPT_TARGETCONFIG_X64
if (has_adx_bmi2())
{
Hacl_Curve25519_64_secret_to_public(pub, priv);
return;
}
#endif
Hacl_Curve25519_51_secret_to_public(pub, priv);
}
void EverCrypt_Curve25519_scalarmult(uint8_t *shared, uint8_t *my_priv, uint8_t *their_pub)
{
#if EVERCRYPT_TARGETCONFIG_X64
if (has_adx_bmi2())
{
Hacl_Curve25519_64_scalarmult(shared, my_priv, their_pub);
return;
}
#endif
Hacl_Curve25519_51_scalarmult(shared, my_priv, their_pub);
}
bool EverCrypt_Curve25519_ecdh(uint8_t *shared, uint8_t *my_priv, uint8_t *their_pub)
{
#if EVERCRYPT_TARGETCONFIG_X64
if (has_adx_bmi2())
{
return Hacl_Curve25519_64_ecdh(shared, my_priv, their_pub);
}
#endif
return Hacl_Curve25519_51_ecdh(shared, my_priv, their_pub);
}
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