Ejemplo n.º 1
0
/**
   Encrypt (or decrypt) bytes of ciphertext (or plaintext) with RC4
   @param key     The key
   @param keylen  The key length
   @param datain  The plaintext (or ciphertext)
   @param datalen The length of the input and output (octets)
   @param dataout [out] The ciphertext (or plaintext)
   @return CRYPT_OK if successful
*/
int rc4_stream_memory(const unsigned char *key,    unsigned long keylen,
                      const unsigned char *datain, unsigned long datalen,
                      unsigned char *dataout)
{
   rc4_state st;
   int err;

   if ((err = rc4_stream_setup(&st, key, keylen)) != CRYPT_OK) goto WIPE_KEY;
   err = rc4_stream_crypt(&st, datain, datalen, dataout);
WIPE_KEY:
   rc4_stream_done(&st);
   return err;
}
Ejemplo n.º 2
0
int rc4_stream_test(void)
{
#ifndef LTC_TEST
   return CRYPT_NOP;
#else
   rc4_state st;
   int err;
   const unsigned char key[] = { 0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef };
   const unsigned char pt[]  = { 0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef };
   const unsigned char ct[]  = { 0x75, 0xb7, 0x87, 0x80, 0x99, 0xe0, 0xc5, 0x96 };
   unsigned char buf[10];

   if ((err = rc4_stream_setup(&st, key, sizeof(key))) != CRYPT_OK)    return err;
   if ((err = rc4_stream_crypt(&st, pt, sizeof(pt), buf)) != CRYPT_OK) return err;
   if (compare_testvector(buf, sizeof(ct), ct, sizeof(ct), "RC4", 0))  return CRYPT_FAIL_TESTVECTOR;
   if ((err = rc4_stream_done(&st)) != CRYPT_OK)                       return err;

   return CRYPT_OK;
#endif
}