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 /* Dispatch functions for Seed cipher modes ecb, cbc, ofb, cfb */ 11 12 /* 13 * SEED low level APIs are deprecated for public use, but still ok for 14 * internal use. 15 */ 16 #include "internal/deprecated.h" 17 18 #include "cipher_seed.h" 19 #include "prov/implementations.h" 20 #include "prov/providercommon.h" 21 22 static OSSL_FUNC_cipher_freectx_fn seed_freectx; 23 static OSSL_FUNC_cipher_dupctx_fn seed_dupctx; 24 25 static void seed_freectx(void *vctx) 26 { 27 PROV_SEED_CTX *ctx = (PROV_SEED_CTX *)vctx; 28 29 ossl_cipher_generic_reset_ctx((PROV_CIPHER_CTX *)vctx); 30 OPENSSL_clear_free(ctx, sizeof(*ctx)); 31 } 32 33 static void *seed_dupctx(void *ctx) 34 { 35 PROV_SEED_CTX *in = (PROV_SEED_CTX *)ctx; 36 PROV_SEED_CTX *ret; 37 38 if (!ossl_prov_is_running()) 39 return NULL; 40 41 ret = OPENSSL_malloc(sizeof(*ret)); 42 if (ret == NULL) { 43 ERR_raise(ERR_LIB_PROV, ERR_R_MALLOC_FAILURE); 44 return NULL; 45 } 46 *ret = *in; 47 48 return ret; 49 } 50 51 /* ossl_seed128ecb_functions */ 52 IMPLEMENT_generic_cipher(seed, SEED, ecb, ECB, 0, 128, 128, 0, block) 53 /* ossl_seed128cbc_functions */ 54 IMPLEMENT_generic_cipher(seed, SEED, cbc, CBC, 0, 128, 128, 128, block) 55 /* ossl_seed128ofb128_functions */ 56 IMPLEMENT_generic_cipher(seed, SEED, ofb128, OFB, 0, 128, 8, 128, stream) 57 /* ossl_seed128cfb128_functions */ 58 IMPLEMENT_generic_cipher(seed, SEED, cfb128, CFB, 0, 128, 8, 128, stream) 59