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https://github.com/openssl/openssl.git
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74 lines
2.2 KiB
C
74 lines
2.2 KiB
C
/*
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* Copyright 2019-2023 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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/* AES CCM mode */
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/*
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* This file uses the low level AES functions (which are deprecated for
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* non-internal use) in order to implement provider AES ciphers.
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*/
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#include "internal/deprecated.h"
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#include "cipher_aes_ccm.h"
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#define AES_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, keylen * 8, &actx->ccm.ks.ks); \
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CRYPTO_ccm128_init(&ctx->ccm_ctx, ctx->m, ctx->l, &actx->ccm.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_generic_aes_initkey(PROV_CCM_CTX *ctx, const unsigned char *key,
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size_t keylen)
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{
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PROV_AES_CCM_CTX *actx = (PROV_AES_CCM_CTX *)ctx;
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#ifdef HWAES_CAPABLE
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if (HWAES_CAPABLE) {
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AES_HW_CCM_SET_KEY_FN(HWAES_set_encrypt_key, HWAES_encrypt, NULL, NULL);
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} else
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#endif /* HWAES_CAPABLE */
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#ifdef VPAES_CAPABLE
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if (VPAES_CAPABLE) {
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AES_HW_CCM_SET_KEY_FN(vpaes_set_encrypt_key, vpaes_encrypt, NULL, NULL);
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} else
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#endif
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{
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AES_HW_CCM_SET_KEY_FN(AES_set_encrypt_key, AES_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 aes_ccm = {
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ccm_generic_aes_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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#if defined(S390X_aes_128_CAPABLE)
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# include "cipher_aes_ccm_hw_s390x.inc"
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#elif defined(AESNI_CAPABLE)
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# include "cipher_aes_ccm_hw_aesni.inc"
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#elif defined(SPARC_AES_CAPABLE)
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# include "cipher_aes_ccm_hw_t4.inc"
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#elif defined(__riscv) && __riscv_xlen == 64
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# include "cipher_aes_ccm_hw_rv64i.inc"
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#elif defined(__riscv) && __riscv_xlen == 32
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# include "cipher_aes_ccm_hw_rv32i.inc"
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#else
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const PROV_CCM_HW *ossl_prov_aes_hw_ccm(size_t keybits)
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{
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return &aes_ccm;
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}
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#endif
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