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openairinterface5g/openair3/SECU/aes_128.h
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2023-05-26 12:35:33 +02:00

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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
*/
#ifndef AES_128_OAI_H
#define AES_128_OAI_H
#include <endian.h>
#include <stdint.h>
#include <stdlib.h>
// see 33.401 B.2.3 for the input to 128-EIA2
// (which is identical to 128-NIA2, see 33.501 D.3.1.3)
typedef struct {
uint32_t count;
uint8_t padding: 2;
uint8_t direction: 1;
uint8_t bearer: 5;
uint8_t pad_8;
uint16_t pad_16;
uint64_t pad_64;
} data_iv16_t;
typedef struct{
union{
data_iv16_t d;
uint8_t iv[16];
};
} iv16_t;
typedef struct {
uint32_t count;
uint8_t padding: 2;
uint8_t direction: 1;
uint8_t bearer: 5;
uint8_t pad_8;
uint16_t pad_16;
} data_iv8_t;
typedef struct{
union{
data_iv8_t d;
uint8_t iv[8];
};
} iv8_t;
typedef enum {
AES_INITIALIZATION_VECTOR_8,
AES_INITIALIZATION_VECTOR_16,
NONE_INITIALIZATION_VECTOR,
AES_INITIALIZATION_VECTOR_END,
} iv_e;
#if __BYTE_ORDER == __BIG_ENDIAN
static_assert(0 != 0, "The struct iv_t needs little endianness");
#endif
// static_assert((16 == sizeof(iv_t)) , "Initialization Vector needs to have an AES_BLOCK_SIZE" );
typedef struct {
uint8_t key[16];
iv_e type;
union{
iv8_t iv8;
iv16_t iv16;
};
} aes_128_t;
#endif