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      1 /*
      2  * Copyright 2019-2020 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 /*
     11  * RC4 low level APIs are deprecated for public use, but still ok for internal
     12  * use.
     13  */
     14 #include "internal/deprecated.h"
     15 
     16 #include "cipher_rc4.h"
     17 
     18 static int cipher_hw_rc4_initkey(PROV_CIPHER_CTX *ctx,
     19                                  const unsigned char *key, size_t keylen)
     20 {
     21     PROV_RC4_CTX *rctx =  (PROV_RC4_CTX *)ctx;
     22 
     23     RC4_set_key(&rctx->ks.ks, keylen, key);
     24     return 1;
     25 }
     26 
     27 static int cipher_hw_rc4_cipher(PROV_CIPHER_CTX *ctx, unsigned char *out,
     28                                 const unsigned char *in, size_t len)
     29 {
     30     PROV_RC4_CTX *rctx =  (PROV_RC4_CTX *)ctx;
     31 
     32     RC4(&rctx->ks.ks, len, in, out);
     33     return 1;
     34 }
     35 
     36 static const PROV_CIPHER_HW rc4_hw = {
     37     cipher_hw_rc4_initkey,
     38     cipher_hw_rc4_cipher
     39 };
     40 const PROV_CIPHER_HW *ossl_prov_cipher_hw_rc4(size_t keybits)
     41 {
     42     return &rc4_hw;
     43 }
     44 
     45