C++ (Cpp) salsa20_setkey Beispiele

Beispiel #1

Datei: salsa20.c Projekt: Greenchik/libgcrypt

static const char*
selftest (void)
{
  SALSA20_context_t ctx;
  byte scratch[8+1];

  static byte key_1[] =
    { 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
  static const byte nonce_1[] =
    { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
  static const byte plaintext_1[] =
    { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
  static const byte ciphertext_1[] =
    { 0xE3, 0xBE, 0x8F, 0xDD, 0x8B, 0xEC, 0xA2, 0xE3};

  salsa20_setkey (&ctx, key_1, sizeof key_1);
  salsa20_setiv  (&ctx, nonce_1, sizeof nonce_1);
  scratch[8] = 0;
  salsa20_encrypt_stream (&ctx, scratch, plaintext_1, sizeof plaintext_1);
  if (memcmp (scratch, ciphertext_1, sizeof ciphertext_1))
    return "Salsa20 encryption test 1 failed.";
  if (scratch[8])
    return "Salsa20 wrote too much.";
  salsa20_setkey( &ctx, key_1, sizeof(key_1));
  salsa20_setiv  (&ctx, nonce_1, sizeof nonce_1);
  salsa20_encrypt_stream (&ctx, scratch, scratch, sizeof plaintext_1);
  if (memcmp (scratch, plaintext_1, sizeof plaintext_1))
    return "Salsa20 decryption test 1 failed.";
  return NULL;
}

Beispiel #2

Datei: salsa20.c Projekt: creationst/Creation2

static const char*
selftest (void)
{
  SALSA20_context_t ctx;
  byte scratch[8+1];
  byte buf[256+64+4];
  int i;

  static byte key_1[] =
    { 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
  static const byte nonce_1[] =
    { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
  static const byte plaintext_1[] =
    { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
  static const byte ciphertext_1[] =
    { 0xE3, 0xBE, 0x8F, 0xDD, 0x8B, 0xEC, 0xA2, 0xE3};

  salsa20_setkey (&ctx, key_1, sizeof key_1);
  salsa20_setiv  (&ctx, nonce_1, sizeof nonce_1);
  scratch[8] = 0;
  salsa20_encrypt_stream (&ctx, scratch, plaintext_1, sizeof plaintext_1);
  if (memcmp (scratch, ciphertext_1, sizeof ciphertext_1))
    return "Salsa20 encryption test 1 failed.";
  if (scratch[8])
    return "Salsa20 wrote too much.";
  salsa20_setkey( &ctx, key_1, sizeof(key_1));
  salsa20_setiv  (&ctx, nonce_1, sizeof nonce_1);
  salsa20_encrypt_stream (&ctx, scratch, scratch, sizeof plaintext_1);
  if (memcmp (scratch, plaintext_1, sizeof plaintext_1))
    return "Salsa20 decryption test 1 failed.";

  for (i = 0; i < sizeof buf; i++)
    buf[i] = i;
  salsa20_setkey (&ctx, key_1, sizeof key_1);
  salsa20_setiv (&ctx, nonce_1, sizeof nonce_1);
  /*encrypt*/
  salsa20_encrypt_stream (&ctx, buf, buf, sizeof buf);
  /*decrypt*/
  salsa20_setkey (&ctx, key_1, sizeof key_1);
  salsa20_setiv (&ctx, nonce_1, sizeof nonce_1);
  salsa20_encrypt_stream (&ctx, buf, buf, 1);
  salsa20_encrypt_stream (&ctx, buf+1, buf+1, (sizeof buf)-1-1);
  salsa20_encrypt_stream (&ctx, buf+(sizeof buf)-1, buf+(sizeof buf)-1, 1);
  for (i = 0; i < sizeof buf; i++)
    if (buf[i] != (byte)i)
      return "Salsa20 encryption test 2 failed.";

  return NULL;
}