[SOLVED] CS代考计算机代写 /* Child process of page-parallel.

/* Child process of page-parallel.
Encrypts 1 MB of zeros, then decrypts it, and ensures that
the zeros are back. */

#include
#include “tests/arc4.h”
#include “tests/lib.h”
#include “tests/main.h”

const char *test_name = “child-linear”;

#define SIZE (1024 * 1024)
static char buf[SIZE];

int
main (int argc, char *argv[])
{
const char *key = argv[argc – 1];
struct arc4 arc4;
size_t i;

/* Encrypt zeros. */
arc4_init (&arc4, key, strlen (key));
arc4_crypt (&arc4, buf, SIZE);

/* Decrypt back to zeros. */
arc4_init (&arc4, key, strlen (key));
arc4_crypt (&arc4, buf, SIZE);

/* Check that it’s all zeros. */
for (i = 0; i < SIZE; i++)if (buf[i] != ‘’)fail (“byte %zu != 0”, i);return 0x42;}