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      1 /*
      2  * Copyright 2019-2021 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 /* Dispatch functions for Blowfish cipher modes ecb, cbc, ofb, cfb */
     11 
     12 /*
     13  * BF low level APIs are deprecated for public use, but still ok for internal
     14  * use.
     15  */
     16 #include "internal/deprecated.h"
     17 
     18 #include "cipher_blowfish.h"
     19 #include "prov/implementations.h"
     20 #include "prov/providercommon.h"
     21 
     22 #define BF_FLAGS PROV_CIPHER_FLAG_VARIABLE_LENGTH
     23 
     24 static OSSL_FUNC_cipher_freectx_fn blowfish_freectx;
     25 static OSSL_FUNC_cipher_dupctx_fn blowfish_dupctx;
     26 
     27 static void blowfish_freectx(void *vctx)
     28 {
     29     PROV_BLOWFISH_CTX *ctx = (PROV_BLOWFISH_CTX *)vctx;
     30 
     31     ossl_cipher_generic_reset_ctx((PROV_CIPHER_CTX *)vctx);
     32     OPENSSL_clear_free(ctx, sizeof(*ctx));
     33 }
     34 
     35 static void *blowfish_dupctx(void *ctx)
     36 {
     37     PROV_BLOWFISH_CTX *in = (PROV_BLOWFISH_CTX *)ctx;
     38     PROV_BLOWFISH_CTX *ret;
     39 
     40     if (!ossl_prov_is_running())
     41         return NULL;
     42 
     43     ret = OPENSSL_malloc(sizeof(*ret));
     44     if (ret == NULL)
     45         return NULL;
     46     *ret = *in;
     47 
     48     return ret;
     49 }
     50 
     51 /* bf_ecb_functions */
     52 IMPLEMENT_var_keylen_cipher(blowfish, BLOWFISH, ecb, ECB, BF_FLAGS, 128, 64, 0, block)
     53 /* bf_cbc_functions */
     54 IMPLEMENT_var_keylen_cipher(blowfish, BLOWFISH, cbc, CBC, BF_FLAGS, 128, 64, 64, block)
     55 /* bf_ofb_functions */
     56 IMPLEMENT_var_keylen_cipher(blowfish, BLOWFISH, ofb64, OFB, BF_FLAGS, 128, 8, 64, stream)
     57 /* bf_cfb_functions */
     58 IMPLEMENT_var_keylen_cipher(blowfish, BLOWFISH, cfb64, CFB, BF_FLAGS, 128, 8, 64, stream)
     59