From 12199f55eb93e8970b783ba1eb073ac370775ab7 Mon Sep 17 00:00:00 2001
From: Dmitry Baryshkov <dbaryshkov@gmail.com>
Date: Fri, 17 Jan 2020 00:52:37 +0300
Subject: [PATCH] hogweed-benchmark: enable testing of GOST DSA
Signed-off-by: Dmitry Baryshkov <dbaryshkov@gmail.com>
---
examples/hogweed-benchmark.c | 104 +++++++++++++++++++++++++++++++++++
1 file changed, 104 insertions(+)
diff --git a/examples/hogweed-benchmark.c b/examples/hogweed-benchmark.c
index 11393df0..bceed77e 100644
--- a/examples/hogweed-benchmark.c
+++ b/examples/hogweed-benchmark.c
@@ -48,6 +48,7 @@
#include "dsa.h"
#include "rsa.h"
#include "eddsa.h"
+#include "gostdsa.h"
#include "curve25519.h"
#include "curve448.h"
@@ -591,6 +592,107 @@ bench_eddsa_clear (void *p)
free (p);
}
+static void *
+bench_gostdsa_init (unsigned size)
+{
+ struct ecdsa_ctx *ctx;
+ const struct ecc_curve *ecc;
+
+ const char *xs;
+ const char *ys;
+ const char *zs;
+ mpz_t x, y, z;
+
+ ctx = xalloc (sizeof(*ctx));
+
+ dsa_signature_init (&ctx->s);
+ knuth_lfib_init (&ctx->lfib, 17);
+
+ switch (size)
+ {
+ case 256:
+ ecc = &_nettle_gost_gc256b;
+ xs = "971566ceda436ee7678f7e07e84ebb7217406c0b4747aa8fd2ab1453c3d0dfba";
+ ys = "ad58736965949f8e59830f8de20fc6c0d177f6ab599874f1e2e24ff71f9ce643";
+ zs = "bfcf1d623e5cdd3032a7c6eabb4a923c46e43d640ffeaaf2c3ed39a8fa399924";
+ ctx->digest = hash_string (&nettle_sha256, "abc");
+ ctx->digest_size = 32;
+ break;
+
+ case 512:
+ ecc = &_nettle_gost_gc512a;
+ xs = "03A36340A95BB5F93D131961B5B1C1B3213DF7FF3B5A30376407E2A65C441BC6"
+ "D1B34662317083243F007B15A8512B526606D3B172B606DCE86DBD6F82DA3D40";
+ ys = "DEAD76318012FED79507809C89CC44848743640EAC9A3C847DA9082E050760A1"
+ "0679F4B707ABC1872640AD20D7441F66C7A8B3BFF1B8E11B4A076F0A86749F73";
+ zs = "3FC01CDCD4EC5F972EB482774C41E66DB7F380528DFE9E67992BA05AEE462435"
+ "757530E641077CE587B976C8EEB48C48FD33FD175F0C7DE6A44E014E6BCB074B";
+ ctx->digest = hash_string (&nettle_sha512, "abc");
+ ctx->digest_size = 64;
+ break;
+
+ default:
+ die ("Internal error.\n");
+ }
+ ecc_point_init (&ctx->pub, ecc);
+ ecc_scalar_init (&ctx->key, ecc);
+
+ mpz_init_set_str (x, xs, 16);
+ mpz_init_set_str (y, ys, 16);
+ mpz_init_set_str (z, zs, 16);
+
+ ecc_point_set (&ctx->pub, x, y);
+ ecc_scalar_set (&ctx->key, z);
+
+ mpz_clear (x);
+ mpz_clear (y);
+ mpz_clear (z);
+
+ gostdsa_sign (&ctx->key,
+ &ctx->lfib, (nettle_random_func *) knuth_lfib_random,
+ ctx->digest_size, ctx->digest,
+ &ctx->s);
+
+ return ctx;
+}
+
+static void
+bench_gostdsa_sign (void *p)
+{
+ struct ecdsa_ctx *ctx = p;
+ struct dsa_signature s;
+
+ dsa_signature_init (&s);
+ gostdsa_sign (&ctx->key,
+ &ctx->lfib, (nettle_random_func *) knuth_lfib_random,
+ ctx->digest_size, ctx->digest,
+ &s);
+ dsa_signature_clear (&s);
+}
+
+static void
+bench_gostdsa_verify (void *p)
+{
+ struct ecdsa_ctx *ctx = p;
+ if (! gostdsa_verify (&ctx->pub,
+ ctx->digest_size, ctx->digest,
+ &ctx->s))
+ die ("Internal error, _gostdsa_verify failed.\n");
+}
+
+static void
+bench_gostdsa_clear (void *p)
+{
+ struct ecdsa_ctx *ctx = p;
+
+ ecc_point_clear (&ctx->pub);
+ ecc_scalar_clear (&ctx->key);
+ dsa_signature_clear (&ctx->s);
+ free (ctx->digest);
+
+ free (ctx);
+}
+
#if WITH_OPENSSL
struct openssl_rsa_ctx
{
@@ -838,6 +940,8 @@ struct alg alg_list[] = {
{ "eddsa", 448, bench_eddsa_init, bench_eddsa_sign, bench_eddsa_verify, bench_eddsa_clear },
{ "curve", 255, bench_curve_init, bench_curve_mul_g, bench_curve_mul, bench_curve_clear},
{ "curve", 448, bench_curve_init, bench_curve_mul_g, bench_curve_mul, bench_curve_clear },
+ { "gostdsa", 256, bench_gostdsa_init, bench_gostdsa_sign, bench_gostdsa_verify, bench_gostdsa_clear },
+ { "gostdsa", 512, bench_gostdsa_init, bench_gostdsa_sign, bench_gostdsa_verify, bench_gostdsa_clear },
};
#define numberof(x) (sizeof (x) / sizeof ((x)[0]))
--
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