mirror of
https://github.com/ntop/n2n.git
synced 2024-09-16 15:31:10 +02:00
86 lines
2.9 KiB
C
86 lines
2.9 KiB
C
/**
|
|
* (C) 2007-22 - ntop.org and contributors
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not see see <http://www.gnu.org/licenses/>
|
|
*
|
|
*/
|
|
|
|
|
|
#ifndef AES_H
|
|
#define AES_H
|
|
|
|
|
|
#include <stdint.h>
|
|
#include <stdlib.h>
|
|
|
|
#include "portable_endian.h"
|
|
|
|
#define AES_BLOCK_SIZE 16
|
|
#define AES_IV_SIZE (AES_BLOCK_SIZE)
|
|
|
|
#define AES256_KEY_BYTES (256/8)
|
|
#define AES192_KEY_BYTES (192/8)
|
|
#define AES128_KEY_BYTES (128/8)
|
|
|
|
|
|
#ifdef HAVE_LIBCRYPTO // openSSL 1.1 ---------------------------------------------------------------------
|
|
|
|
#include <openssl/aes.h>
|
|
#include <openssl/evp.h>
|
|
#include <openssl/err.h>
|
|
|
|
typedef struct aes_context_t {
|
|
EVP_CIPHER_CTX *enc_ctx; /* openssl's reusable evp_* en/de-cryption context */
|
|
EVP_CIPHER_CTX *dec_ctx; /* openssl's reusable evp_* en/de-cryption context */
|
|
const EVP_CIPHER *cipher; /* cipher to use: e.g. EVP_aes_128_cbc */
|
|
uint8_t key[AES256_KEY_BYTES]; /* the pure key data for payload encryption & decryption */
|
|
AES_KEY ecb_dec_key; /* one step ecb decryption key */
|
|
} aes_context_t;
|
|
|
|
#elif defined (__AES__) && defined (__SSE2__) // Intel's AES-NI ---------------------------------------------------
|
|
|
|
#include <immintrin.h>
|
|
|
|
typedef struct aes_context_t {
|
|
__m128i rk_enc[15];
|
|
__m128i rk_dec[15];
|
|
int Nr;
|
|
} aes_context_t;
|
|
|
|
#else // plain C --------------------------------------------------------------------------------------------------
|
|
|
|
typedef struct aes_context_t {
|
|
uint32_t enc_rk[60]; // round keys for encryption
|
|
uint32_t dec_rk[60]; // round keys for decryption
|
|
int Nr; // number of rounds
|
|
} aes_context_t;
|
|
|
|
#endif // ---------------------------------------------------------------------------------------------------------
|
|
|
|
|
|
int aes_cbc_encrypt (unsigned char *out, const unsigned char *in, size_t in_len,
|
|
const unsigned char *iv, aes_context_t *ctx);
|
|
|
|
int aes_cbc_decrypt (unsigned char *out, const unsigned char *in, size_t in_len,
|
|
const unsigned char *iv, aes_context_t *ctx);
|
|
|
|
int aes_ecb_decrypt (unsigned char *out, const unsigned char *in, aes_context_t *ctx);
|
|
|
|
int aes_init (const unsigned char *key, size_t key_size, aes_context_t **ctx);
|
|
|
|
int aes_deinit (aes_context_t *ctx);
|
|
|
|
|
|
#endif // AES_H
|