63 lines
2.2 KiB
C
63 lines
2.2 KiB
C
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/* Copyright (c) 2018, Google Inc.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
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* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
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#ifndef OPENSSL_HEADER_HRSS_INTERNAL_H
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#define OPENSSL_HEADER_HRSS_INTERNAL_H
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#include <openssl/base.h>
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#include "../internal.h"
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#if defined(__cplusplus)
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extern "C" {
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#endif
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#define N 701
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#define BITS_PER_WORD (sizeof(crypto_word_t) * 8)
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#define WORDS_PER_POLY ((N + BITS_PER_WORD - 1) / BITS_PER_WORD)
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#define BITS_IN_LAST_WORD (N % BITS_PER_WORD)
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struct poly2 {
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crypto_word_t v[WORDS_PER_POLY];
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};
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struct poly3 {
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struct poly2 s, a;
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};
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OPENSSL_EXPORT void HRSS_poly2_rotr_consttime(struct poly2 *p, size_t bits);
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OPENSSL_EXPORT void HRSS_poly3_mul(struct poly3 *out, const struct poly3 *x,
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const struct poly3 *y);
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OPENSSL_EXPORT void HRSS_poly3_invert(struct poly3 *out,
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const struct poly3 *in);
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// On x86-64, we can use the AVX2 code from [HRSS]. (The authors have given
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// explicit permission for this and signed a CLA.) However it's 57KB of object
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// code, so it's not used if |OPENSSL_SMALL| is defined.
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#if !defined(OPENSSL_NO_ASM) && !defined(OPENSSL_SMALL) && \
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defined(OPENSSL_X86_64) && defined(OPENSSL_LINUX)
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#define POLY_RQ_MUL_ASM
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// poly_Rq_mul is defined in assembly. Inputs and outputs must be 16-byte-
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// aligned.
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extern void poly_Rq_mul(uint16_t r[N + 3], const uint16_t a[N + 3],
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const uint16_t b[N + 3]);
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#endif
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#if defined(__cplusplus)
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} // extern "C"
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#endif
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#endif // !OPENSSL_HEADER_HRSS_INTERNAL_H
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