1 files changed, 321 insertions, 0 deletions
diff --git a/src/benchmark-cipher.c b/src/benchmark-cipher.c
new file mode 100644
index 0000000..76a3cdc
--- /dev/null
+++ b/src/benchmark-cipher.c
@@ -0,0 +1,321 @@
+/*
+ * Copyright (C) 2009-2012 Free Software Foundation, Inc.
+ *
+ * This file is part of GnuTLS.
+ *
+ * GnuTLS is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GnuTLS is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see
+ * <https://www.gnu.org/licenses/>.
+ *
+ * Written by Nikos Mavrogiannopoulos <nmav@gnutls.org>.
+ */
+
+#include <config.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <gnutls/gnutls.h>
+#include <gnutls/crypto.h>
+#include <time.h>
+#include <unistd.h>
+#include <assert.h>
+#include "benchmark.h"
+
+static void tls_log_func(int level, const char *str)
+{
+	fprintf(stderr, "|<%d>| %s", level, str);
+}
+
+static unsigned page_size = 4096;
+
+#define ALLOC(x) {x=malloc(step+64);assert(x!=NULL);}
+#define ALLOCM(x, mem) {x=malloc(mem); assert(x!=NULL); assert(gnutls_rnd(GNUTLS_RND_NONCE, x, mem) >= 0);}
+#define FREE(x) free(x)
+#define INC(orig, x, s) x+=page_size; if ((x+step) >= (((unsigned char*)orig) + MAX_MEM)) { x = orig; }
+
+#define MAX_MEM 64*1024*1024
+
+static void cipher_mac_bench(int algo, int mac_algo, int size)
+{
+	int ret;
+	gnutls_cipher_hd_t ctx;
+	gnutls_hmac_hd_t mac_ctx;
+	void *_key, *_iv;
+	gnutls_datum_t key, iv;
+	int ivsize = gnutls_cipher_get_iv_size(algo);
+	int keysize = gnutls_cipher_get_key_size(algo);
+	int step = size * 1024;
+	struct benchmark_st st;
+	void *output, *input;
+	unsigned char c, *i;
+
+	_key = malloc(keysize);
+	if (_key == NULL)
+		return;
+	memset(_key, 0xf0, keysize);
+
+	_iv = malloc(ivsize);
+	if (_iv == NULL) {
+		free(_key);
+		return;
+	}
+	memset(_iv, 0xf0, ivsize);
+
+	iv.data = _iv;
+	iv.size = ivsize;
+
+	key.data = _key;
+	key.size = keysize;
+
+	assert(gnutls_rnd(GNUTLS_RND_NONCE, &c, 1) >= 0);
+
+	printf("%19s-%s ", gnutls_cipher_get_name(algo),
+	       gnutls_mac_get_name(mac_algo));
+	fflush(stdout);
+
+	ALLOCM(input, MAX_MEM);
+	ALLOC(output);
+	i = input;
+
+	start_benchmark(&st);
+
+	ret = gnutls_hmac_init(&mac_ctx, mac_algo, key.data, key.size);
+	if (ret < 0) {
+		fprintf(stderr, "error: %s\n", gnutls_strerror(ret));
+		goto leave;
+	}
+
+	ret = gnutls_cipher_init(&ctx, algo, &key, &iv);
+	if (ret < 0) {
+		fprintf(stderr, "error: %s\n", gnutls_strerror(ret));
+		goto leave;
+	}
+
+	do {
+		gnutls_hmac(mac_ctx, i, step);
+		gnutls_cipher_encrypt2(ctx, i, step, output, step + 64);
+		st.size += step;
+		INC(input, i, step);
+	}
+	while (benchmark_must_finish == 0);
+
+	gnutls_cipher_deinit(ctx);
+	gnutls_hmac_deinit(mac_ctx, NULL);
+
+	stop_benchmark(&st, NULL, 1);
+
+      leave:
+	FREE(input);
+	FREE(output);
+	free(_key);
+	free(_iv);
+}
+
+static void force_memcpy(void *dest, const void *src, size_t n)
+{
+	volatile unsigned volatile_zero = 0;
+	volatile char *vdest = (volatile char*)dest;
+
+	if (n > 0) {
+		do {
+			memcpy(dest, src, n);
+		} while(vdest[volatile_zero] != ((char*)src)[volatile_zero]);
+	}
+}
+
+static void cipher_bench(int algo, int size, int aead)
+{
+	int ret;
+	gnutls_cipher_hd_t ctx;
+	void *_key, *_iv;
+	gnutls_aead_cipher_hd_t actx;
+	gnutls_datum_t key, iv;
+	int ivsize = gnutls_cipher_get_iv_size(algo);
+	int keysize = gnutls_cipher_get_key_size(algo);
+	int step = size * 1024;
+	void *input, *output;
+	struct benchmark_st st;
+	unsigned char c, *i;
+
+	_key = malloc(keysize);
+	if (_key == NULL)
+		return;
+	memset(_key, 0xf0, keysize);
+
+	/* For AES-XTS, the block and tweak key must be different */
+	if (algo == GNUTLS_CIPHER_AES_128_XTS ||
+		algo == GNUTLS_CIPHER_AES_256_XTS) {
+		memset((uint8_t *)_key + (keysize / 2), 0x0f, (keysize / 2));
+	}
+
+	_iv = malloc(ivsize);
+	if (_iv == NULL) {
+		free(_key);
+		return;
+	}
+	memset(_iv, 0xf0, ivsize);
+
+	iv.data = _iv;
+	iv.size = ivsize;
+
+	key.data = _key;
+	key.size = keysize;
+
+	printf("%24s ", gnutls_cipher_get_name(algo));
+	fflush(stdout);
+	assert(gnutls_rnd(GNUTLS_RND_NONCE, &c, 1) >= 0);
+
+	ALLOCM(input, MAX_MEM);
+	ALLOCM(output, step+64);
+	i = input;
+
+	start_benchmark(&st);
+
+	if (algo == GNUTLS_CIPHER_NULL) {
+		do {
+			force_memcpy(output, i, step);
+			st.size += step;
+			INC(input, i, step);
+		}
+		while (benchmark_must_finish == 0);
+	} else if (aead != 0) {
+		unsigned tag_size = gnutls_cipher_get_tag_size(algo);
+		size_t out_size;
+
+		ret = gnutls_aead_cipher_init(&actx, algo, &key);
+		if (ret < 0) {
+			fprintf(stderr, "error: %s\n", gnutls_strerror(ret));
+			goto leave;
+		}
+
+		do {
+			out_size = step+tag_size;
+			assert(gnutls_aead_cipher_encrypt(actx, iv.data, iv.size, NULL, 0, tag_size,
+				i, step, output, &out_size) >= 0);
+			st.size += step;
+			INC(input, i, step);
+		}
+		while (benchmark_must_finish == 0);
+
+		gnutls_aead_cipher_deinit(actx);
+	} else {
+		ret = gnutls_cipher_init(&ctx, algo, &key, &iv);
+		if (ret < 0) {
+			fprintf(stderr, "error: %s\n", gnutls_strerror(ret));
+			goto leave;
+		}
+
+		do {
+			gnutls_cipher_encrypt2(ctx, i, step, output, step + 64);
+			st.size += step;
+			INC(input, i, step);
+		}
+		while (benchmark_must_finish == 0);
+
+		gnutls_cipher_deinit(ctx);
+	}
+	stop_benchmark(&st, NULL, 1);
+
+	FREE(input);
+	FREE(output);
+      leave:
+	free(_key);
+	free(_iv);
+}
+
+static void mac_bench(int algo, int size)
+{
+	void *_key;
+	int key_size = gnutls_hmac_get_key_size(algo);
+	int step = size * 1024;
+	struct benchmark_st st;
+	void *input;
+	unsigned char c, *i;
+
+	ALLOCM(input, MAX_MEM);
+	i = input;
+
+	_key = malloc(key_size);
+	if (_key == NULL)
+		return;
+	memset(_key, 0xf0, key_size);
+
+	printf("%16s ", gnutls_mac_get_name(algo));
+	fflush(stdout);
+
+	assert(gnutls_rnd(GNUTLS_RND_NONCE, &c, 1) >= 0);
+
+	start_benchmark(&st);
+
+	do {
+		gnutls_hmac_fast(algo, _key, key_size, i, step, _key);
+		st.size += step;
+		INC(input, i, step);
+	}
+	while (benchmark_must_finish == 0);
+
+	stop_benchmark(&st, NULL, 1);
+	FREE(input);
+
+	free(_key);
+}
+
+void benchmark_cipher(int debug_level)
+{
+	int size = 16;
+	gnutls_global_set_log_function(tls_log_func);
+	gnutls_global_set_log_level(debug_level);
+
+#ifdef _SC_PAGESIZE
+	page_size = sysconf(_SC_PAGESIZE);
+#endif
+
+	printf("Checking AEAD ciphers, payload size: %u\n", size * 1024);
+	cipher_bench(GNUTLS_CIPHER_AES_128_GCM, size, 1);
+	cipher_bench(GNUTLS_CIPHER_AES_128_CCM, size, 1);
+	cipher_bench(GNUTLS_CIPHER_CHACHA20_POLY1305, size, 1);
+
+	printf("\nChecking cipher-MAC combinations, payload size: %u\n", size * 1024);
+	cipher_mac_bench(GNUTLS_CIPHER_SALSA20_256, GNUTLS_MAC_SHA1, size);
+	cipher_mac_bench(GNUTLS_CIPHER_AES_128_CBC, GNUTLS_MAC_SHA1, size);
+	cipher_mac_bench(GNUTLS_CIPHER_AES_128_CBC, GNUTLS_MAC_SHA256,
+			 size);
+#ifdef ENABLE_GOST
+	cipher_mac_bench(GNUTLS_CIPHER_GOST28147_TC26Z_CNT, GNUTLS_MAC_GOST28147_TC26Z_IMIT,
+			 size);
+#endif
+
+	printf("\nChecking MAC algorithms, payload size: %u\n", size * 1024);
+	mac_bench(GNUTLS_MAC_SHA1, size);
+	mac_bench(GNUTLS_MAC_SHA256, size);
+	mac_bench(GNUTLS_MAC_SHA512, size);
+#ifdef ENABLE_GOST
+	mac_bench(GNUTLS_MAC_GOST28147_TC26Z_IMIT, size);
+	mac_bench(GNUTLS_MAC_GOSTR_94, size);
+	mac_bench(GNUTLS_MAC_STREEBOG_512, size);
+#endif
+
+	printf("\nChecking ciphers, payload size: %u\n", size * 1024);
+	cipher_bench(GNUTLS_CIPHER_3DES_CBC, size, 0);
+	cipher_bench(GNUTLS_CIPHER_AES_128_CBC, size, 0);
+	cipher_bench(GNUTLS_CIPHER_AES_128_XTS, size, 0);
+	cipher_bench(GNUTLS_CIPHER_AES_256_XTS, size, 0);
+	cipher_bench(GNUTLS_CIPHER_SALSA20_256, size, 0);
+	cipher_bench(GNUTLS_CIPHER_NULL, size, 1);
+#ifdef ENABLE_GOST
+	cipher_bench(GNUTLS_CIPHER_GOST28147_TC26Z_CNT, size, 0);
+#endif
+
+	gnutls_global_deinit();
+}