97 lines
2.7 KiB
C
97 lines
2.7 KiB
C
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/*
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* Copyright (c) 2019 OSU OPEnS Lab
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include "inner.h"
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static const unsigned char *
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api_generator(int curve, size_t *len)
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{
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if (curve == BR_EC_secp256r1) {
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return br_ec_p256_m15.generator(curve, len);
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}
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return br_ec_prime_i15.generator(curve, len);
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}
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static const unsigned char *
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api_order(int curve, size_t *len)
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{
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if (curve == BR_EC_secp256r1) {
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return br_ec_p256_m15.order(curve, len);
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}
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return br_ec_prime_i15.order(curve, len);
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}
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static size_t
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api_xoff(int curve, size_t *len)
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{
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if (curve == BR_EC_secp256r1) {
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return br_ec_p256_m15.xoff(curve, len);
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}
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return br_ec_prime_i15.xoff(curve, len);
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}
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static uint32_t
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api_mul(unsigned char *G, size_t Glen,
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const unsigned char *kb, size_t kblen, int curve)
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{
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if (curve == BR_EC_secp256r1) {
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return br_ec_p256_m15.mul(G, Glen, kb, kblen, curve);
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}
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return br_ec_prime_i15.mul(G, Glen, kb, kblen, curve);
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}
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static size_t
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api_mulgen(unsigned char *R,
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const unsigned char *x, size_t xlen, int curve)
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{
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if (curve == BR_EC_secp256r1) {
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return br_ec_p256_m15.mulgen(R, x, xlen, curve);
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}
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return br_ec_prime_i15.mulgen(R, x, xlen, curve);
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}
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static uint32_t
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api_muladd(unsigned char *A, const unsigned char *B, size_t len,
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const unsigned char *x, size_t xlen,
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const unsigned char *y, size_t ylen, int curve)
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{
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if (curve == BR_EC_secp256r1) {
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return br_ec_p256_m15.muladd(A, B, len,
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x, xlen, y, ylen, curve);
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}
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return br_ec_prime_i15.muladd(A, B, len,
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x, xlen, y, ylen, curve);
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}
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/* see bearssl_ec.h */
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const br_ec_impl br_ec_prime_fast_256 = {
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(uint32_t)0x03800000,
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&api_generator,
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&api_order,
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&api_xoff,
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&api_mul,
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&api_mulgen,
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&api_muladd
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};
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