1 /* 2 * Copyright 1995-2021 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 /* 11 * CAST low level APIs are deprecated for public use, but still ok for 12 * internal use. 13 */ 14 #include "internal/deprecated.h" 15 16 #include <stdio.h> 17 #include "internal/cryptlib.h" 18 19 #ifndef OPENSSL_NO_CAST 20 # include <openssl/evp.h> 21 # include <openssl/objects.h> 22 # include "crypto/evp.h" 23 # include <openssl/cast.h> 24 # include "evp_local.h" 25 26 static int cast_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, 27 const unsigned char *iv, int enc); 28 29 typedef struct { 30 CAST_KEY ks; 31 } EVP_CAST_KEY; 32 33 # define data(ctx) EVP_C_DATA(EVP_CAST_KEY,ctx) 34 35 IMPLEMENT_BLOCK_CIPHER(cast5, ks, CAST, EVP_CAST_KEY, 36 NID_cast5, 8, CAST_KEY_LENGTH, 8, 64, 37 EVP_CIPH_VARIABLE_LENGTH, cast_init_key, NULL, 38 EVP_CIPHER_set_asn1_iv, EVP_CIPHER_get_asn1_iv, NULL) 39 40 static int cast_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, 41 const unsigned char *iv, int enc) 42 { 43 int keylen = EVP_CIPHER_CTX_get_key_length(ctx); 44 45 if (keylen <= 0) 46 return 0; 47 CAST_set_key(&data(ctx)->ks, keylen, key); 48 return 1; 49 } 50 51 #endif 52