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52 lines
1.5 KiB
C
52 lines
1.5 KiB
C
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/*
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* Copyright 2019 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the Apache License 2.0 (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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/* Dispatch functions for cast cipher modes ecb, cbc, ofb, cfb */
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#include "cipher_sm4.h"
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#include "internal/provider_algs.h"
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/* TODO (3.0) Figure out what flags to pass */
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#define SM4_FLAGS EVP_CIPH_FLAG_DEFAULT_ASN1
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static OSSL_OP_cipher_freectx_fn sm4_freectx;
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static OSSL_OP_cipher_dupctx_fn sm4_dupctx;
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static void sm4_freectx(void *vctx)
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{
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PROV_SM4_CTX *ctx = (PROV_SM4_CTX *)vctx;
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OPENSSL_clear_free(ctx, sizeof(*ctx));
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}
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static void *sm4_dupctx(void *ctx)
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{
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PROV_SM4_CTX *in = (PROV_SM4_CTX *)ctx;
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PROV_SM4_CTX *ret = OPENSSL_malloc(sizeof(*ret));
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if (ret == NULL) {
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ERR_raise(ERR_LIB_PROV, ERR_R_MALLOC_FAILURE);
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return NULL;
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}
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*ret = *in;
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return ret;
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}
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/* sm4128ecb_functions */
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IMPLEMENT_generic_cipher(sm4, SM4, ecb, ECB, SM4_FLAGS, 128, 128, 0, block)
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/* sm4128cbc_functions */
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IMPLEMENT_generic_cipher(sm4, SM4, cbc, CBC, SM4_FLAGS, 128, 128, 128, block)
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/* sm4128ctr_functions */
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IMPLEMENT_generic_cipher(sm4, SM4, ctr, CTR, SM4_FLAGS, 128, 8, 128, stream)
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/* sm4128ofb128_functions */
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IMPLEMENT_generic_cipher(sm4, SM4, ofb128, OFB, SM4_FLAGS, 128, 8, 128, stream)
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/* sm4128cfb128_functions */
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IMPLEMENT_generic_cipher(sm4, SM4, cfb128, CFB, SM4_FLAGS, 128, 8, 128, stream)
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