MySQL  8.0.21
Source Code Documentation
crypt_genhash_impl.h
Go to the documentation of this file.
1 /* Copyright (c) 2012, 2019, Oracle and/or its affiliates. All rights reserved.
2 
3  This program is free software; you can redistribute it and/or modify
4  it under the terms of the GNU General Public License, version 2.0,
5  as published by the Free Software Foundation.
6 
7  This program is also distributed with certain software (including
8  but not limited to OpenSSL) that is licensed under separate terms,
9  as designated in a particular file or component or in included license
10  documentation. The authors of MySQL hereby grant you an additional
11  permission to link the program and your derivative works with the
12  separately licensed software that they have included with MySQL.
13 
14  This program is distributed in the hope that it will be useful,
15  but WITHOUT ANY WARRANTY; without even the implied warranty of
16  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17  GNU General Public License, version 2.0, for more details.
18 
19  You should have received a copy of the GNU General Public License
20  along with this program; if not, write to the Free Software
21  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
22 
23 /**
24  @file include/crypt_genhash_impl.h
25 */
26 
27 #ifndef CRYPT_HASHGEN_IMPL_H
28 #define CRYPT_HASHGEN_IMPL_H
29 #define ROUNDS_DEFAULT 5000
30 #define ROUNDS_MIN 1000
31 #define ROUNDS_MAX ROUNDS_DEFAULT
32 #define MIXCHARS 32
33 #define CRYPT_SALT_LENGTH 20
34 #define CRYPT_MAGIC_LENGTH 3
35 #define CRYPT_PARAM_LENGTH 13
36 #define SHA256_HASH_LENGTH 43
37 #define CRYPT_MAX_PASSWORD_SIZE \
38  (CRYPT_SALT_LENGTH + SHA256_HASH_LENGTH + CRYPT_MAGIC_LENGTH + \
39  CRYPT_PARAM_LENGTH)
40 #define MAX_PLAINTEXT_LENGTH 256
41 
42 #include <stddef.h>
43 
44 #include "my_macros.h"
45 
46 int extract_user_salt(const char **salt_begin, const char **salt_end);
47 char *my_crypt_genhash(char *ctbuffer, size_t ctbufflen, const char *plaintext,
48  size_t plaintext_len, const char *switchsalt,
49  const char **params, unsigned int *num_rounds = nullptr);
50 void generate_user_salt(char *buffer, int buffer_len);
51 void xor_string(char *to, int to_len, char *pattern, int pattern_len);
52 
53 #endif
Some common macros.
char buffer[STRING_BUFFER]
Definition: test_sql_9_sessions.cc:57
void xor_string(char *to, int to_len, char *pattern, int pattern_len)
Definition: crypt_genhash_impl.cc:438
char * my_crypt_genhash(char *ctbuffer, size_t ctbufflen, const char *plaintext, size_t plaintext_len, const char *switchsalt, const char **params, unsigned int *num_rounds=nullptr)
Definition: crypt_genhash_impl.cc:240
int extract_user_salt(const char **salt_begin, const char **salt_end)
Finds the interval which envelopes the user salt in a crypt password The crypt format is assumed to b...
Definition: crypt_genhash_impl.cc:192
void generate_user_salt(char *buffer, int buffer_len)
Generate a random string using ASCII characters but avoid seperator character.
Definition: crypt_genhash_impl.cc:425