mirror of https://github.com/openssl/openssl.git
40 lines
1.1 KiB
C
40 lines
1.1 KiB
C
/*
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* Copyright 2024-2025 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the Apache License 2.0 (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include "ml_dsa_local.h"
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#include "ml_dsa_vector.h"
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#include "ml_dsa_matrix.h"
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/*
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* Matrix multiply of a k*l matrix of polynomials by a 1 * l vector of
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* polynomials to produce a 1 * k vector of polynomial results.
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* i.e. t = a * s
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*
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* @param a A k * l matrix of polynomials in NTT form
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* @param s A 1 * l vector of polynomials in NTT form
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* @param t 1 * k vector of polynomial results in NTT form
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*/
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void ossl_ml_dsa_matrix_mult_vector(const MATRIX *a, const VECTOR *s,
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VECTOR *t)
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{
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size_t i, j;
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POLY *poly = a->m_poly;
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vector_zero(t);
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for (i = 0; i < a->k; i++) {
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for (j = 0; j < a->l; j++) {
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POLY product;
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ossl_ml_dsa_poly_ntt_mult(poly++, &s->poly[j], &product);
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poly_add(&product, &t->poly[i], &t->poly[i]);
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}
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}
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}
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