/******************************************************************************
 *
 *                Copyright (c) 2017-2019 by Löwenware Ltd
 *             Please, refer LICENSE file for legal information
 *
 ******************************************************************************/

/**
 * @file crypt.h
 * @author Ilja Kartašov <ik@lowenware.com>
 * @brief 
 *
 * @see https://lowenware.com/
 */

#ifndef AX_CRYPT_H_F18E0303_66D9_4793_A902_230BA0A0A46F
#define AX_CRYPT_H_F18E0303_66D9_4793_A902_230BA0A0A46F

#include <stdint.h>
#include <time.h>
#include <aisl/aisl.h>
#include <openssl/evp.h>

#define AX_CRYPT_KEY_SIZE 32
#define AX_CRYPT_SALT_SIZE 8

struct ax_crypt {
  EVP_CIPHER_CTX *e_ctx;
  EVP_CIPHER_CTX *d_ctx;
};


typedef struct ax_crypt * AxCrypt;


AislStatus
ax_crypt_init(AxSession crypt, const char *key_file);


void
ax_crypt_release(AxSession crypt);


/* encrypt */
int
ax_crypt_write(AxSession crypt, char **out, const char *input, int in_len);


/* decrypt */
int
ax_crypt_read(AxSession crypt, char **out, const char *input, int in_len);


/* encrypt and convert to BASE64 */
int
ax_crypt_encode(AxSession crypt, char **out, const char *input, int in_len);


/* decrypt from BASE64 */
int
ax_crypt_decode(AxSession crypt, char **out, const char *input, int in_len);

#endif /* !AX_CRYPT_H */