providers/default/ciphers/cipher_rc4_hw.c

   1 /*
   2  * Copyright 2019 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the Apache License 2.0 (the "License").  You may not use
   5  * this file except in compliance with the License.  You can obtain a copy
   6  * in the file LICENSE in the source distribution or at
   7  * https://www.openssl.org/source/license.html
   8  */
   9
  10 #include "cipher_rc4.h"
  11
  12 static int cipher_hw_rc4_initkey(PROV_CIPHER_CTX *ctx,
  13                                  const unsigned char *key, size_t keylen)
  14 {
  15     PROV_RC4_CTX *rctx =  (PROV_RC4_CTX *)ctx;
  16
  17     RC4_set_key(&rctx->ks.ks, keylen, key);
  18     return 1;
  19 }
  20
  21 static int cipher_hw_rc4_cipher(PROV_CIPHER_CTX *ctx, unsigned char *out,
  22                                 const unsigned char *in, size_t len)
  23 {
  24     PROV_RC4_CTX *rctx =  (PROV_RC4_CTX *)ctx;
  25
  26     RC4(&rctx->ks.ks, len, in, out);
  27     return 1;
  28 }
  29
  30 static const PROV_CIPHER_HW rc4_hw = {
  31     cipher_hw_rc4_initkey,
  32     cipher_hw_rc4_cipher
  33 };
  34 const PROV_CIPHER_HW *PROV_CIPHER_HW_rc4(size_t keybits)
  35 {
  36     return &rc4_hw;
  37 }
  38