Viewing file:  cipher_aes_ccm.c (1.44 KB) -rw-r--r--
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/*
* Copyright 2019-2021 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
/*
* AES low level APIs are deprecated for public use, but still ok for internal
* use where we're using them to implement the higher level EVP interface, as is
* the case here.
*/
#include "internal/deprecated.h"
/* Dispatch functions for AES CCM mode */
#include "cipher_aes_ccm.h"
#include "prov/implementations.h"
#include "prov/providercommon.h"
static void *aes_ccm_newctx(void *provctx, size_t keybits)
{
PROV_AES_CCM_CTX *ctx;
if (!ossl_prov_is_running())
return NULL;
ctx = OPENSSL_zalloc(sizeof(*ctx));
if (ctx != NULL)
ossl_ccm_initctx(&ctx->base, keybits, ossl_prov_aes_hw_ccm(keybits));
return ctx;
}
static OSSL_FUNC_cipher_freectx_fn aes_ccm_freectx;
static void aes_ccm_freectx(void *vctx)
{
PROV_AES_CCM_CTX *ctx = (PROV_AES_CCM_CTX *)vctx;
OPENSSL_clear_free(ctx, sizeof(*ctx));
}
/* ossl_aes128ccm_functions */
IMPLEMENT_aead_cipher(aes, ccm, CCM, AEAD_FLAGS, 128, 8, 96);
/* ossl_aes192ccm_functions */
IMPLEMENT_aead_cipher(aes, ccm, CCM, AEAD_FLAGS, 192, 8, 96);
/* ossl_aes256ccm_functions */
IMPLEMENT_aead_cipher(aes, ccm, CCM, AEAD_FLAGS, 256, 8, 96);
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