source: mainline/uspace/lib/crypto/crypto.h@ 6ff23ff

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since 6ff23ff was b7fd2a0, checked in by Jiří Zárevúcky <zarevucky.jiri@…>, 7 years ago

Use errno_t in all uspace and kernel code.

Change type of every variable, parameter and return value that holds an
<errno.h> constant to either errno_t (the usual case), or sys_errno_t
(some places in kernel). This is for the purpose of self-documentation,
as well as for type-checking with a bit of type definition hackery.

Although this is a massive commit, it is a simple text replacement, and thus
is very easy to verify. Simply do the following:

`
git checkout <this commit's hash>
git reset HEAD
git add .
tools/srepl '\berrno_t\b' int
git add .
tools/srepl '\bsys_errno_t\b' sysarg_t
git reset
git diff
`

While this doesn't ensure that the replacements are correct, it does ensure
that the commit doesn't do anything except those replacements. Since errno_t
is typedef'd to int in the usual case (and sys_errno_t to sysarg_t), even if
incorrect, this commit cannot change behavior.
  • Property mode set to 100644
File size: 2.4 KB
Line 
1/*
2 * Copyright (c) 2015 Jan Kolarik
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * - Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * - The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#ifndef LIBCRYPTO_H
30#define LIBCRYPTO_H
31
32#include <errno.h>
33#include <stddef.h>
34#include <stdint.h>
35
36#define AES_CIPHER_LENGTH 16
37#define PBKDF2_KEY_LENGTH 32
38
39/* Left rotation for uint32_t. */
40#define rotl_uint32(val, shift) \
41 (((val) << shift) | ((val) >> (32 - shift)))
42
43/* Right rotation for uint32_t. */
44#define rotr_uint32(val, shift) \
45 (((val) >> shift) | ((val) << (32 - shift)))
46
47/** Hash function selector and also result hash length indicator. */
48typedef enum {
49 HASH_MD5 = 16,
50 HASH_SHA1 = 20
51} hash_func_t;
52
53extern errno_t rc4(uint8_t *, size_t, uint8_t *, size_t, size_t, uint8_t *);
54extern errno_t aes_encrypt(uint8_t *, uint8_t *, uint8_t *);
55extern errno_t aes_decrypt(uint8_t *, uint8_t *, uint8_t *);
56extern errno_t create_hash(uint8_t *, size_t, uint8_t *, hash_func_t);
57extern errno_t hmac(uint8_t *, size_t, uint8_t *, size_t, uint8_t *, hash_func_t);
58extern errno_t pbkdf2(uint8_t *, size_t, uint8_t *, size_t, uint8_t *);
59
60extern uint16_t crc16_ibm(uint16_t crc, uint8_t *buf, size_t len);
61
62#endif
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