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/******************************************************
Copyright (c) 2017 Percona LLC and/or its affiliates.
Encryption datasink implementation for XtraBackup.
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; version 2 of the License.
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, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*******************************************************/
#include <my_base.h>
#if HAVE_GCRYPT
#if GCC_VERSION >= 4002
/* Workaround to avoid "gcry_ac_* is deprecated" warnings in gcrypt.h */
# pragma GCC diagnostic ignored "-Wdeprecated-declarations"
#endif
#include <gcrypt.h>
extern char *ds_encrypt_key;
extern char *ds_encrypt_key_file;
extern int ds_encrypt_threads;
extern ulong ds_encrypt_algo;
/******************************************************************************
Utility interface */
my_bool xb_crypt_read_key_file(const char *filename,
void** key, uint *keylength);
void xb_crypt_create_iv(void* ivbuf, size_t ivlen);
/* Initialize gcrypt and setup encryption key and IV lengths */
gcry_error_t
xb_crypt_init(uint *iv_len);
/* Setup gcrypt cipher */
gcry_error_t
xb_crypt_cipher_open(gcry_cipher_hd_t *cipher_handle);
/* Close gcrypt cipher */
void
xb_crypt_cipher_close(gcry_cipher_hd_t cipher_handle);
/* Decrypt buffer */
gcry_error_t
xb_crypt_decrypt(gcry_cipher_hd_t cipher_handle, const uchar *from,
size_t from_len, uchar *to, size_t *to_len, const uchar *iv,
size_t iv_len, my_bool hash_appended);
/* Encrypt buffer */
gcry_error_t
xb_crypt_encrypt(gcry_cipher_hd_t cipher_handle, const uchar *from,
size_t from_len, uchar *to, size_t *to_len, uchar *iv);
#endif
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