mirror of
https://github.com/openssl/openssl.git
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66 lines
1.9 KiB
C
66 lines
1.9 KiB
C
/*
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* Copyright 2021-2023 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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#include "crypto/sm4_platform.h"
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#define SM4_HW_CCM_SET_KEY_FN(fn_set_enc_key, fn_blk, fn_ccm_enc, fn_ccm_dec) \
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fn_set_enc_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)fn_blk); \
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ctx->str = ctx->enc ? (ccm128_f)fn_ccm_enc : (ccm128_f)fn_ccm_dec; \
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ctx->key_set = 1;
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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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#ifdef HWSM4_CAPABLE
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if (HWSM4_CAPABLE) {
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SM4_HW_CCM_SET_KEY_FN(HWSM4_set_encrypt_key, HWSM4_encrypt, NULL, NULL);
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} else
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#endif /* HWSM4_CAPABLE */
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#ifdef VPSM4_EX_CAPABLE
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if (VPSM4_EX_CAPABLE) {
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SM4_HW_CCM_SET_KEY_FN(vpsm4_ex_set_encrypt_key, vpsm4_ex_encrypt, NULL,
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NULL);
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} else
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#endif /* VPSM4_EX_CAPABLE */
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#ifdef VPSM4_CAPABLE
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if (VPSM4_CAPABLE) {
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SM4_HW_CCM_SET_KEY_FN(vpsm4_set_encrypt_key, vpsm4_encrypt, NULL, NULL);
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} else
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#endif /* VPSM4_CAPABLE */
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{
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SM4_HW_CCM_SET_KEY_FN(ossl_sm4_set_key, ossl_sm4_encrypt, NULL, NULL);
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}
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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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