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/*
* Copyright 2024 Vsevolod Stakhov
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "config.h"
#include "rspamd.h"
#include "shingles.h"
#include "fstring.h"
#include "ottery.h"
#include "cryptobox.h"
#include "unix-std.h"
static const int mapping_size = 64 * 8192 + 1;
static const int max_seg = 32;
static const int random_fuzz_cnt = 10000;
static void *
create_mapping(int mapping_len, unsigned char **beg, unsigned char **end)
{
void *map;
int psize = getpagesize();
map = mmap(NULL, mapping_len + psize * 3, PROT_READ | PROT_WRITE,
MAP_ANON | MAP_SHARED, -1, 0);
g_assert(map != 0);
memset(map, 0, mapping_len + psize * 3);
mprotect(map, psize, PROT_NONE);
/* Misalign pointer */
*beg = ((unsigned char *) map) + psize + 1;
*end = *beg + mapping_len;
mprotect(*beg + mapping_len - 1 + psize, psize, PROT_NONE);
return map;
}
static void
check_result(const rspamd_nm_t key, const rspamd_nonce_t nonce,
const rspamd_mac_t mac, unsigned char *begin, unsigned char *end)
{
uint64_t *t = (uint64_t *) begin;
g_assert(rspamd_cryptobox_decrypt_nm_inplace(begin, end - begin, nonce, key,
mac));
while (t < (uint64_t *) end) {
g_assert(*t == 0);
t++;
}
}
static int
create_random_split(struct rspamd_cryptobox_segment *seg, int mseg,
unsigned char *begin, unsigned char *end)
{
gsize remain = end - begin;
int used = 0;
while (remain > 0 && used < mseg - 1) {
seg->data = begin;
seg->len = ottery_rand_range(remain - 1) + 1;
begin += seg->len;
remain -= seg->len;
used++;
seg++;
}
if (remain > 0) {
seg->data = begin;
seg->len = remain;
used++;
}
return used;
}
static int
create_realistic_split(struct rspamd_cryptobox_segment *seg, int mseg,
unsigned char *begin, unsigned char *end)
{
gsize remain = end - begin;
int used = 0;
static const int small_seg = 512, medium_seg = 2048;
while (remain > 0 && used < mseg - 1) {
seg->data = begin;
if (ottery_rand_uint32() % 2 == 0) {
seg->len = ottery_rand_range(small_seg) + 1;
}
else {
seg->len = ottery_rand_range(medium_seg) +
small_seg;
}
if (seg->len > remain) {
seg->len = remain;
}
begin += seg->len;
remain -= seg->len;
used++;
seg++;
}
if (remain > 0) {
seg->data = begin;
seg->len = remain;
used++;
}
return used;
}
static int
create_constrained_split(struct rspamd_cryptobox_segment *seg, int mseg,
int constraint,
unsigned char *begin, unsigned char *end)
{
gsize remain = end - begin;
int used = 0;
while (remain > 0 && used < mseg - 1) {
seg->data = begin;
seg->len = constraint;
if (seg->len > remain) {
seg->len = remain;
}
begin += seg->len;
remain -= seg->len;
used++;
seg++;
}
if (remain > 0) {
seg->data = begin;
seg->len = remain;
used++;
}
return used;
}
void rspamd_cryptobox_test_func(void)
{
void *map;
unsigned char *begin, *end;
rspamd_nm_t key;
rspamd_nonce_t nonce;
rspamd_mac_t mac;
struct rspamd_cryptobox_segment *seg;
double t1, t2;
int i, cnt, ms;
gboolean checked_openssl = FALSE;
map = create_mapping(mapping_size, &begin, &end);
ottery_rand_bytes(key, sizeof(key));
ottery_rand_bytes(nonce, sizeof(nonce));
memset(mac, 0, sizeof(mac));
seg = g_slice_alloc0(sizeof(*seg) * max_seg * 10);
/* Test baseline */
t1 = rspamd_get_ticks(TRUE);
rspamd_cryptobox_encrypt_nm_inplace(begin, end - begin, nonce, key, mac);
t2 = rspamd_get_ticks(TRUE);
check_result(key, nonce, mac, begin, end);
msg_info("baseline encryption: %.0f", t2 - t1);
/* A single chunk as vector */
seg[0].data = begin;
seg[0].len = end - begin;
t1 = rspamd_get_ticks(TRUE);
rspamd_cryptobox_encryptv_nm_inplace(seg, 1, nonce, key, mac);
t2 = rspamd_get_ticks(TRUE);
check_result(key, nonce, mac, begin, end);
msg_info("bulk encryption: %.0f", t2 - t1);
/* Two chunks as vector */
seg[0].data = begin;
seg[0].len = (end - begin) / 2;
seg[1].data = begin + seg[0].len;
seg[1].len = (end - begin) - seg[0].len;
t1 = rspamd_get_ticks(TRUE);
rspamd_cryptobox_encryptv_nm_inplace(seg, 2, nonce, key, mac);
t2 = rspamd_get_ticks(TRUE);
check_result(key, nonce, mac, begin, end);
msg_info("2 equal chunks encryption: %.0f", t2 - t1);
seg[0].data = begin;
seg[0].len = 1;
seg[1].data = begin + seg[0].len;
seg[1].len = (end - begin) - seg[0].len;
t1 = rspamd_get_ticks(TRUE);
rspamd_cryptobox_encryptv_nm_inplace(seg, 2, nonce, key, mac);
t2 = rspamd_get_ticks(TRUE);
check_result(key, nonce, mac, begin, end);
msg_info("small and large chunks encryption: %.0f", t2 - t1);
seg[0].data = begin;
seg[0].len = (end - begin) - 3;
seg[1].data = begin + seg[0].len;
seg[1].len = (end - begin) - seg[0].len;
t1 = rspamd_get_ticks(TRUE);
rspamd_cryptobox_encryptv_nm_inplace(seg, 2, nonce, key, mac);
t2 = rspamd_get_ticks(TRUE);
check_result(key, nonce, mac, begin, end);
msg_info("large and small chunks encryption: %.0f", t2 - t1);
/* Random two chunks as vector */
seg[0].data = begin;
seg[0].len = ottery_rand_range(end - begin - 1) + 1;
seg[1].data = begin + seg[0].len;
seg[1].len = (end - begin) - seg[0].len;
t1 = rspamd_get_ticks(TRUE);
rspamd_cryptobox_encryptv_nm_inplace(seg, 2, nonce, key, mac);
t2 = rspamd_get_ticks(TRUE);
check_result(key, nonce, mac, begin, end);
msg_info("random 2 chunks encryption: %.0f", t2 - t1);
/* 3 specific chunks */
seg[0].data = begin;
seg[0].len = 2;
seg[1].data = begin + seg[0].len;
seg[1].len = 2049;
seg[2].data = begin + seg[0].len + seg[1].len;
seg[2].len = (end - begin) - seg[0].len - seg[1].len;
t1 = rspamd_get_ticks(TRUE);
rspamd_cryptobox_encryptv_nm_inplace(seg, 3, nonce, key, mac);
t2 = rspamd_get_ticks(TRUE);
check_result(key, nonce, mac, begin, end);
msg_info("small, medium and large chunks encryption: %.0f", t2 - t1);
cnt = create_random_split(seg, max_seg, begin, end);
t1 = rspamd_get_ticks(TRUE);
rspamd_cryptobox_encryptv_nm_inplace(seg, cnt, nonce, key, mac);
t2 = rspamd_get_ticks(TRUE);
check_result(key, nonce, mac, begin, end);
msg_info("random split of %d chunks encryption: %.0f", cnt, t2 - t1);
cnt = create_realistic_split(seg, max_seg, begin, end);
t1 = rspamd_get_ticks(TRUE);
rspamd_cryptobox_encryptv_nm_inplace(seg, cnt, nonce, key, mac);
t2 = rspamd_get_ticks(TRUE);
check_result(key, nonce, mac, begin, end);
msg_info("realistic split of %d chunks encryption: %.0f", cnt, t2 - t1);
cnt = create_constrained_split(seg, max_seg + 1, 32, begin, end);
t1 = rspamd_get_ticks(TRUE);
rspamd_cryptobox_encryptv_nm_inplace(seg, cnt, nonce, key, mac);
t2 = rspamd_get_ticks(TRUE);
check_result(key, nonce, mac, begin, end);
msg_info("constrained split of %d chunks encryption: %.0f", cnt, t2 - t1);
for (i = 0; i < random_fuzz_cnt; i++) {
ms = ottery_rand_range(i % max_seg * 2) + 1;
cnt = create_random_split(seg, ms, begin, end);
t1 = rspamd_get_ticks(TRUE);
rspamd_cryptobox_encryptv_nm_inplace(seg, cnt, nonce, key, mac);
t2 = rspamd_get_ticks(TRUE);
check_result(key, nonce, mac, begin, end);
if (i % 1000 == 0) {
msg_info("random fuzz iterations: %d", i);
}
}
for (i = 0; i < random_fuzz_cnt; i++) {
ms = ottery_rand_range(i % max_seg * 2) + 1;
cnt = create_realistic_split(seg, ms, begin, end);
t1 = rspamd_get_ticks(TRUE);
rspamd_cryptobox_encryptv_nm_inplace(seg, cnt, nonce, key, mac);
t2 = rspamd_get_ticks(TRUE);
check_result(key, nonce, mac, begin, end);
if (i % 1000 == 0) {
msg_info("realistic fuzz iterations: %d", i);
}
}
for (i = 0; i < random_fuzz_cnt; i++) {
ms = ottery_rand_range(i % max_seg * 10) + 1;
cnt = create_constrained_split(seg, ms, i, begin, end);
t1 = rspamd_get_ticks(TRUE);
rspamd_cryptobox_encryptv_nm_inplace(seg, cnt, nonce, key, mac);
t2 = rspamd_get_ticks(TRUE);
check_result(key, nonce, mac, begin, end);
if (i % 1000 == 0) {
msg_info("constrained fuzz iterations: %d", i);
}
}
}
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