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78 lines
4 KiB
C
78 lines
4 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2021 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above 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 │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/stdio/rand.h"
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#include "libc/stdio/stdio.h"
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#include "libc/str/str.h"
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#include "libc/testlib/ezbench.h"
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#include "libc/testlib/testlib.h"
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#include "third_party/mbedtls/config.h"
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#include "third_party/mbedtls/endian.h"
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void Hacl_Curve25519_crypto_scalarmult(uint8_t *, uint8_t *, uint8_t *);
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void curve25519(uint8_t[32], uint8_t[32], uint8_t[32]);
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const uint64_t kNumbers[] = {
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0x0000000000000000, //
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0x0000000000000001, //
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0x0000000000001000, //
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0x0000000002000000, //
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0x0000004000000000, //
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0x0008000000000000, //
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0x8000000000000000, //
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0x0007ffffffffffff, //
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0x0000003fffffffff, //
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0x0000000001ffffff, //
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0x0000000000000fff, //
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0xffffffffffffffff, //
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0xfff8000000000000, //
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};
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TEST(everest, tinierVersionBehavesTheSame) {
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size_t i;
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uint8_t secret[32], bpoint[32], public[2][32];
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for (i = 0; i < 500; ++i) {
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rngset(secret, sizeof(secret), _rand64, -1);
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rngset(bpoint, sizeof(bpoint), _rand64, -1);
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Hacl_Curve25519_crypto_scalarmult(public[0], secret, bpoint);
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curve25519(public[1], secret, bpoint);
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ASSERT_EQ(0, memcmp(public[0], public[1], sizeof(public[0])));
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}
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for (i = 0; i < 500; ++i) {
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Write64le(secret + 000, kNumbers[rand() % ARRAYLEN(kNumbers)]);
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Write64le(secret + 010, kNumbers[rand() % ARRAYLEN(kNumbers)]);
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Write64le(secret + 020, kNumbers[rand() % ARRAYLEN(kNumbers)]);
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Write64le(secret + 030, kNumbers[rand() % ARRAYLEN(kNumbers)]);
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Write64le(bpoint + 000, kNumbers[rand() % ARRAYLEN(kNumbers)]);
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Write64le(bpoint + 010, kNumbers[rand() % ARRAYLEN(kNumbers)]);
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Write64le(bpoint + 020, kNumbers[rand() % ARRAYLEN(kNumbers)]);
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Write64le(bpoint + 030, kNumbers[rand() % ARRAYLEN(kNumbers)]);
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Hacl_Curve25519_crypto_scalarmult(public[0], secret, bpoint);
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curve25519(public[1], secret, bpoint);
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ASSERT_EQ(0, memcmp(public[0], public[1], sizeof(public[0])));
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}
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}
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BENCH(everest, bench) {
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uint8_t secret[32], bpoint[32], public[32];
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rngset(secret, sizeof(secret), _rand64, -1);
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rngset(bpoint, sizeof(bpoint), _rand64, -1);
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EZBENCH2("everest", donothing,
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Hacl_Curve25519_crypto_scalarmult(public, secret, bpoint));
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EZBENCH2("mariana", donothing, curve25519(public, secret, bpoint));
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}
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