54 lines
2.0 KiB
C
54 lines
2.0 KiB
C
/*
|
|
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
|
|
* contributor license agreements. See the NOTICE file distributed with
|
|
* this work for additional information regarding copyright ownership.
|
|
* The OpenAirInterface Software Alliance licenses this file to You under
|
|
* the OAI Public License, Version 1.1 (the "License"); you may not use this file
|
|
* except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.openairinterface.org/?page_id=698
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License 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.
|
|
*-------------------------------------------------------------------------------
|
|
* For more information about the OpenAirInterface (OAI) Software Alliance:
|
|
* contact@openairinterface.org
|
|
*/
|
|
|
|
#include "aes_128_ecb.h"
|
|
#include "common/utils/assertions.h"
|
|
#include <openssl/aes.h>
|
|
#include <openssl/err.h>
|
|
#include <openssl/evp.h>
|
|
|
|
void aes_128_ecb(const aes_128_t* k_iv, byte_array_t msg, size_t len_out, uint8_t out[len_out])
|
|
{
|
|
DevAssert(k_iv != NULL);
|
|
DevAssert(k_iv->type == NONE_INITIALIZATION_VECTOR);
|
|
|
|
// Create and initialise the context
|
|
EVP_CIPHER_CTX* ctx = EVP_CIPHER_CTX_new();
|
|
DevAssert(ctx != NULL);
|
|
|
|
// Initialise the encryption operation.
|
|
int rc = EVP_EncryptInit_ex(ctx, EVP_aes_128_ecb(), NULL, k_iv->key, NULL);
|
|
DevAssert(rc == 1);
|
|
|
|
int len_ev = 0;
|
|
rc = EVP_EncryptUpdate(ctx, out, &len_ev, msg.buf, msg.len);
|
|
DevAssert(!(len_ev > len_out) && "Buffer overflow");
|
|
|
|
// Finalise the encryption. Normally ciphertext bytes may be written at
|
|
// this stage, but this does not occur in GCM mode
|
|
rc = EVP_EncryptFinal_ex(ctx, out + len_ev, &len_ev);
|
|
DevAssert(rc == 1);
|
|
|
|
// Get the tag
|
|
// rc == EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_GCM_GET_TAG, 16, tag))
|
|
EVP_CIPHER_CTX_free(ctx);
|
|
}
|