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c2ee608a23
The GCM mode of the SM4 algorithm is specifieded by RFC8998. Signed-off-by: Tianjia Zhang <tianjia.zhang@linux.alibaba.com> Reviewed-by: Paul Yang <kaishen.yy@antfin.com> Reviewed-by: Paul Dale <pauli@openssl.org> (Merged from https://github.com/openssl/openssl/pull/16491)
42 lines
1.1 KiB
C
42 lines
1.1 KiB
C
/*
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* Copyright 2021 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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/*-
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* Generic support for SM4 CCM.
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*/
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#include "cipher_sm4_ccm.h"
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static int ccm_sm4_initkey(PROV_CCM_CTX *ctx,
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const unsigned char *key, size_t keylen)
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{
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PROV_SM4_CCM_CTX *actx = (PROV_SM4_CCM_CTX *)ctx;
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ossl_sm4_set_key(key, &actx->ks.ks);
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CRYPTO_ccm128_init(&ctx->ccm_ctx, ctx->m, ctx->l, &actx->ks.ks,
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(block128_f)ossl_sm4_encrypt);
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ctx->str = NULL;
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ctx->key_set = 1;
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return 1;
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}
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static const PROV_CCM_HW ccm_sm4 = {
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ccm_sm4_initkey,
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ossl_ccm_generic_setiv,
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ossl_ccm_generic_setaad,
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ossl_ccm_generic_auth_encrypt,
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ossl_ccm_generic_auth_decrypt,
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ossl_ccm_generic_gettag
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};
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const PROV_CCM_HW *ossl_prov_sm4_hw_ccm(size_t keybits)
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{
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return &ccm_sm4;
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}
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