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/*
* Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License").
* You may not use this file except in compliance with the License.
* A copy of the License is located at
*
* http://aws.amazon.com/apache2.0
*
* or in the "license" file accompanying this file. This file is distributed
* on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
* express or implied. See the License for the specific language governing
* permissions and limitations under the License.
*/
#include <openssl/evp.h>
#if defined(OPENSSL_IS_BORINGSSL) || defined(OPENSSL_IS_AWSLC)
#include <openssl/mem.h>
#endif
#include "crypto/s2n_cipher.h"
#include "utils/s2n_safety.h"
int s2n_session_key_alloc(struct s2n_session_key *key)
{
POSIX_ENSURE_EQ(key->evp_cipher_ctx, NULL);
POSIX_ENSURE_REF(key->evp_cipher_ctx = EVP_CIPHER_CTX_new());
#if defined(S2N_CIPHER_AEAD_API_AVAILABLE)
POSIX_ENSURE_EQ(key->evp_aead_ctx, NULL);
key->evp_aead_ctx = OPENSSL_malloc(sizeof(EVP_AEAD_CTX));
if (key->evp_aead_ctx == NULL) {
EVP_CIPHER_CTX_free(key->evp_cipher_ctx);
S2N_ERROR_PRESERVE_ERRNO();
}
EVP_AEAD_CTX_zero(key->evp_aead_ctx);
#endif
return 0;
}
int s2n_session_key_free(struct s2n_session_key *key)
{
if (key->evp_cipher_ctx != NULL) {
EVP_CIPHER_CTX_free(key->evp_cipher_ctx);
key->evp_cipher_ctx = NULL;
}
#if defined(S2N_CIPHER_AEAD_API_AVAILABLE)
if (key->evp_aead_ctx != NULL) {
EVP_AEAD_CTX_free(key->evp_aead_ctx);
key->evp_aead_ctx = NULL;
}
#endif
return 0;
}
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