/* Encrypts, then decrypts, 2 MB of memory and verifies that the
values are as they should be. */
#include
#include “tests/arc4.h”
#include “tests/lib.h”
#include “tests/main.h”
#define SIZE (2 * 1024 * 1024)
static char buf[SIZE];
void
test_main (void)
{
struct arc4 arc4;
size_t i;
/* Initialize to 0x5a. */
msg (“initialize”);
memset (buf, 0x5a, sizeof buf);
/* Check that it’s all 0x5a. */
msg (“read pass”);
for (i = 0; i < SIZE; i++)
if (buf[i] != 0x5a)
fail ("byte %zu != 0x5a", i);
/* Encrypt zeros. */
msg ("read/modify/write pass one");
arc4_init (&arc4, "foobar", 6);
arc4_crypt (&arc4, buf, SIZE);
/* Decrypt back to zeros. */
msg ("read/modify/write pass two");
arc4_init (&arc4, "foobar", 6);
arc4_crypt (&arc4, buf, SIZE);
/* Check that it's all 0x5a. */
msg ("read pass");
for (i = 0; i < SIZE; i++)
if (buf[i] != 0x5a)
fail ("byte %zu != 0x5a", i);
}