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 /* 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 /* Dispatch functions for cast cipher modes ecb, cbc, ofb, cfb */ 17 18 #include <openssl/proverr.h> 19 #include "cipher_cast.h" 20 #include "prov/implementations.h" 21 #include "prov/providercommon.h" 22 23 #define CAST5_FLAGS PROV_CIPHER_FLAG_VARIABLE_LENGTH 24 25 static OSSL_FUNC_cipher_freectx_fn cast5_freectx; 26 static OSSL_FUNC_cipher_dupctx_fn cast5_dupctx; 27 28 static void cast5_freectx(void *vctx) 29 { 30 PROV_CAST_CTX *ctx = (PROV_CAST_CTX *)vctx; 31 32 ossl_cipher_generic_reset_ctx((PROV_CIPHER_CTX *)vctx); 33 OPENSSL_clear_free(ctx, sizeof(*ctx)); 34 } 35 36 static void *cast5_dupctx(void *ctx) 37 { 38 PROV_CAST_CTX *in = (PROV_CAST_CTX *)ctx; 39 PROV_CAST_CTX *ret; 40 41 if (!ossl_prov_is_running()) 42 return NULL; 43 44 ret = OPENSSL_malloc(sizeof(*ret)); 45 if (ret == NULL) { 46 ERR_raise(ERR_LIB_PROV, ERR_R_MALLOC_FAILURE); 47 return NULL; 48 } 49 *ret = *in; 50 51 return ret; 52 } 53 54 /* ossl_cast5128ecb_functions */ 55 IMPLEMENT_var_keylen_cipher(cast5, CAST, ecb, ECB, CAST5_FLAGS, 128, 64, 0, block) 56 /* ossl_cast5128cbc_functions */ 57 IMPLEMENT_var_keylen_cipher(cast5, CAST, cbc, CBC, CAST5_FLAGS, 128, 64, 64, block) 58 /* ossl_cast5128ofb64_functions */ 59 IMPLEMENT_var_keylen_cipher(cast5, CAST, ofb64, OFB, CAST5_FLAGS, 128, 8, 64, stream) 60 /* ossl_cast5128cfb64_functions */ 61 IMPLEMENT_var_keylen_cipher(cast5, CAST, cfb64, CFB, CAST5_FLAGS, 128, 8, 64, stream) 62