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37a65e3335
Make sure that we read all possible encryption keys from checkpoint and if log block checksum does not match, print all found checkpoint encryption keys.
128 lines
4.4 KiB
C
128 lines
4.4 KiB
C
/*****************************************************************************
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Copyright (C) 2013, 2015, Google Inc. All Rights Reserved.
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Copyright (C) 2014, 2016, MariaDB Corporation. All Rights Reserved.
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This program is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free Software
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Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*****************************************************************************/
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/**************************************************//**
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@file include/log0crypt.h
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Innodb log encrypt/decrypt
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Created 11/25/2013 Minli Zhu
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Modified Jan Lindström jan.lindstrom@mariadb.com
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*******************************************************/
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#ifndef log0crypt_h
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#define log0crypt_h
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#include "univ.i"
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#include "ut0byte.h"
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#include "my_crypt.h"
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typedef int Crypt_result;
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/* If true, enable redo log encryption. */
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extern my_bool srv_encrypt_log;
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/***********************************************************************
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Set next checkpoint's key version to latest one, and generate new key */
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UNIV_INTERN
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void
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log_crypt_set_ver_and_key(
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/*======================*/
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ib_uint64_t next_checkpoint_no);/*!< in: next checkpoint no */
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/*********************************************************************//**
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Writes the crypto (version, msg and iv) info, which has been used for
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log blocks with lsn <= this checkpoint's lsn, to a log header's
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checkpoint buf. */
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UNIV_INTERN
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void
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log_crypt_write_checkpoint_buf(
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/*===========================*/
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byte* buf); /*!< in/out: checkpoint buffer */
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/*********************************************************************//**
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Read the crypto (version, msg and iv) info, which has been used for
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log blocks with lsn <= this checkpoint's lsn, from a log header's
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checkpoint buf. */
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UNIV_INTERN
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bool
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log_crypt_read_checkpoint_buf(
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/*===========================*/
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const byte* buf); /*!< in: checkpoint buffer */
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/********************************************************
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Encrypt one or more log block before it is flushed to disk */
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UNIV_INTERN
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void
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log_encrypt_before_write(
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/*=====================*/
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ib_uint64_t next_checkpoint_no, /*!< in: log group to be flushed */
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byte* block, /*!< in/out: pointer to a log block */
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const ulint size); /*!< in: size of log blocks */
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/********************************************************
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Decrypt a specified log segment after they are read from a log file to a buffer.
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*/
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UNIV_INTERN
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void
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log_decrypt_after_read(
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/*===================*/
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byte* frame, /*!< in/out: log segment */
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const ulint size); /*!< in: log segment size */
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/* Error codes for crypt info */
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typedef enum {
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LOG_UNENCRYPTED = 0,
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LOG_CRYPT_KEY_NOT_FOUND = 1,
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LOG_DECRYPT_MAYBE_FAILED = 2
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} log_crypt_err_t;
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/********************************************************
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Check is the checkpoint information encrypted. This check
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is based on fact has log group crypt info and based
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on this crypt info was the key version different from
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unencrypted key version. There is no realible way to
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distinguish encrypted log block from corrupted log block,
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but if log block corruption is found this function is
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used to find out if log block is maybe encrypted but
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encryption key, key management plugin or encryption
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algorithm does not match.
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@return TRUE, if log block may be encrypted */
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UNIV_INTERN
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ibool
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log_crypt_block_maybe_encrypted(
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/*============================*/
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const byte* log_block, /*!< in: log block */
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log_crypt_err_t* err_info); /*!< out: error info */
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/********************************************************
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Print crypt error message to error log */
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UNIV_INTERN
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void
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log_crypt_print_error(
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/*==================*/
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log_crypt_err_t err_info); /*!< out: error info */
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/*********************************************************************//**
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Print checkpoint no from log block and all encryption keys from
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checkpoints if they are present. Used for problem analysis. */
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void
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log_crypt_print_checkpoint_keys(
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/*============================*/
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const byte* log_block);
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#endif // log0crypt.h
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