openssl/providers/implementations/ciphers/cipher_aria_gcm.c

/*
 * Copyright 2019-2020 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
 */

/* Dispatch functions for ARIA GCM mode */

#include "cipher_aria_gcm.h"
#include "prov/implementations.h"
#include "prov/providercommon.h"

#define ARIA_GCM_IV_MIN_SIZE     (32 / 8) /* size in bytes */

static void *aria_gcm_newctx(void *provctx, size_t keybits)
{
    PROV_ARIA_GCM_CTX *ctx;

    if (!ossl_prov_is_running())
        return NULL;

    ctx = OPENSSL_zalloc(sizeof(*ctx));
    if (ctx != NULL)
        gcm_initctx(provctx, &ctx->base, keybits,
                    ossl_prov_aria_hw_gcm(keybits), ARIA_GCM_IV_MIN_SIZE);
    return ctx;
}

static OSSL_FUNC_cipher_freectx_fn aria_gcm_freectx;
static void aria_gcm_freectx(void *vctx)
{
    PROV_ARIA_GCM_CTX *ctx = (PROV_ARIA_GCM_CTX *)vctx;

    OPENSSL_clear_free(ctx,  sizeof(*ctx));
}

/* ossl_aria128gcm_functions */
IMPLEMENT_aead_cipher(aria, gcm, GCM, AEAD_FLAGS, 128, 8, 96);
/* ossl_aria192gcm_functions */
IMPLEMENT_aead_cipher(aria, gcm, GCM, AEAD_FLAGS, 192, 8, 96);
/* ossl_aria256gcm_functions */
IMPLEMENT_aead_cipher(aria, gcm, GCM, AEAD_FLAGS, 256, 8, 96);