/usr/share/doc/libsodium-devel
Edit: /usr/share/doc/libsodium-devel/randombytes.c (3963B)
#define TEST_NAME "randombytes"
#include "cmptest.h"
static unsigned char x[65536];
static unsigned long long freq[256];
static int
compat_tests(void)
{
size_t i;
memset(x, 0, sizeof x);
randombytes(x, sizeof x);
for (i = 0; i < 256; ++i) {
freq[i] = 0;
}
for (i = 0; i < sizeof x; ++i) {
++freq[255 & (int) x[i]];
}
for (i = 0; i < 256; ++i) {
if (!freq[i]) {
printf("nacl_tests failed\n");
}
}
return 0;
}
static int
randombytes_tests(void)
{
static const unsigned char seed[randombytes_SEEDBYTES] = {
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a,
0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15,
0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f
};
unsigned char out[100];
unsigned int f = 0U;
unsigned int i;
uint32_t n;
#ifndef BENCHMARKS
# ifdef __EMSCRIPTEN__
assert(strcmp(randombytes_implementation_name(), "js") == 0);
# else
assert(strcmp(randombytes_implementation_name(), "sysrandom") == 0);
# endif
#endif
randombytes(x, 1U);
do {
n = randombytes_random();
f |= ((n >> 24) > 1);
f |= ((n >> 16) > 1) << 1;
f |= ((n >> 8) > 1) << 2;
f |= ((n) > 1) << 3;
f |= (n > 0x7fffffff) << 4;
} while (f != 0x1f);
randombytes_close();
for (i = 0; i < 256; ++i) {
freq[i] = 0;
}
for (i = 0; i < 65536; ++i) {
++freq[randombytes_uniform(256)];
}
for (i = 0; i < 256; ++i) {
if (!freq[i]) {
printf("randombytes_uniform() test failed\n");
}
}
assert(randombytes_uniform(1U) == 0U);
randombytes_close();
#ifndef __EMSCRIPTEN__
assert(&randombytes_internal_implementation == &randombytes_salsa20_implementation);
randombytes_set_implementation(&randombytes_internal_implementation);
assert(strcmp(randombytes_implementation_name(), "internal") == 0);
#endif
randombytes_stir();
for (i = 0; i < 256; ++i) {
freq[i] = 0;
}
for (i = 0; i < 65536; ++i) {
++freq[randombytes_uniform(256)];
}
for (i = 0; i < 256; ++i) {
if (!freq[i]) {
printf("randombytes_uniform() test failed\n");
}
}
memset(x, 0, sizeof x);
randombytes_buf(x, sizeof x);
for (i = 0; i < 256; ++i) {
freq[i] = 0;
}
for (i = 0; i < sizeof x; ++i) {
++freq[255 & (int) x[i]];
}
for (i = 0; i < 256; ++i) {
if (!freq[i]) {
printf("randombytes_buf() test failed\n");
}
}
assert(randombytes_uniform(1U) == 0U);
randombytes_buf_deterministic(out, sizeof out, seed);
for (i = 0; i < sizeof out; ++i) {
printf("%02x", out[i]);
}
printf(" (deterministic)\n");
randombytes_close();
randombytes(x, 1U);
randombytes_close();
assert(randombytes_SEEDBYTES > 0);
assert(randombytes_seedbytes() == randombytes_SEEDBYTES);
return 0;
}
static uint32_t
randombytes_uniform_impl(const uint32_t upper_bound)
{
return upper_bound;
}
static int
impl_tests(void)
{
randombytes_implementation impl = randombytes_sysrandom_implementation;
uint32_t v = randombytes_random();
impl.uniform = randombytes_uniform_impl;
randombytes_close();
randombytes_set_implementation(&impl);
assert(randombytes_uniform(1) == 1);
assert(randombytes_uniform(v) == v);
assert(randombytes_uniform(v) == v);
assert(randombytes_uniform(v) == v);
assert(randombytes_uniform(v) == v);
randombytes_close();
impl.close = NULL;
randombytes_close();
return 0;
}
int
main(void)
{
compat_tests();
randombytes_tests();
#ifndef __EMSCRIPTEN__
impl_tests();
#endif
printf("OK\n");
#ifndef __EMSCRIPTEN__
randombytes_set_implementation(&randombytes_salsa20_implementation);
#endif
return 0;
}