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/*
* Copyright 2013-2016 The OpenSSL Project Authors. All Rights Reserved.
* Copyright (c) 2012, Intel Corporation. All Rights Reserved.
*
* Licensed under the OpenSSL license (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*
* Originally written by Shay Gueron (1, 2), and Vlad Krasnov (1)
* (1) Intel Corporation, Israel Development Center, Haifa, Israel
* (2) University of Haifa, Israel
*/
#ifndef OPENSSL_HEADER_BN_RSAZ_EXP_H
#define OPENSSL_HEADER_BN_RSAZ_EXP_H
#include <openssl/bn.h>
// RSAZ_1024_mod_exp_avx2 sets |result| to |base_norm| raised to |exponent|
// modulo |m_norm|. |base_norm| must be fully-reduced and |exponent| must have
// the high bit set (it is 1024 bits wide). |RR| and |k0| must be |RR| and |n0|,
// respectively, extracted from |m_norm|'s |BN_MONT_CTX|.
void RSAZ_1024_mod_exp_avx2(BN_ULONG result[16], const BN_ULONG base_norm[16],
const BN_ULONG exponent[16],
const BN_ULONG m_norm[16], const BN_ULONG RR[16],
BN_ULONG k0);
// rsaz_avx2_eligible returns one if |RSAZ_1024_mod_exp_avx2| should be used and
// zero otherwise.
int rsaz_avx2_eligible(void);
#endif // OPENSSL_HEADER_BN_RSAZ_EXP_H