/* LibTomCrypt, modular cryptographic library -- Tom St Denis */
/* SPDX-License-Identifier: Unlicense */
#include "tomcrypt_private.h"
#ifdef LTC_RC4_STREAM
/**
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;
}
#endif /* LTC_RC4_STREAM */