1 /*
2  * Copyright (C) 1996-2021 The Squid Software Foundation and contributors
3  *
4  * Squid software is distributed under GPLv2+ license and includes
5  * contributions from numerous individuals and organizations.
6  * Please see the COPYING and CONTRIBUTORS files for details.
7  */
8 
9 #ifndef SQUID_MD5_H
10 #define SQUID_MD5_H
11 
12 #if HAVE_NETTLE_MD5_H
13 #include <nettle/md5.h>
14 
15 typedef struct md5_ctx SquidMD5_CTX;
16 
17 #define SquidMD5Init(c)       md5_init((c))
18 #define SquidMD5Update(c,b,l) md5_update((c), (l), (const uint8_t *)(b))
19 #define SquidMD5Final(d,c)    md5_digest((c), MD5_DIGEST_SIZE, (uint8_t *)(d))
20 
21 #define SQUID_MD5_DIGEST_LENGTH MD5_DIGEST_SIZE
22 
23 #else
24 /*
25  * This is the header file for the MD5 message-digest algorithm.
26  * The algorithm is due to Ron Rivest.  This code was
27  * written by Colin Plumb in 1993, no copyright is claimed.
28  * This code is in the public domain; do with it what you wish.
29  *
30  * Equivalent code is available from RSA Data Security, Inc.
31  * This code has been tested against that, and is equivalent,
32  * except that you don't need to include two pages of legalese
33  * with every copy.
34  *
35  * To compute the message digest of a chunk of bytes, declare an
36  * MD5Context structure, pass it to MD5Init, call MD5Update as
37  * needed on buffers full of bytes, and then call MD5Final, which
38  * will fill a supplied 16-byte array with the digest.
39  *
40  * Changed so as no longer to depend on Colin Plumb's `usual.h'
41  * header definitions; now uses stuff from dpkg's config.h
42  *  - Ian Jackson <ian@chiark.greenend.org.uk>.
43  * Still in the public domain.
44  *
45  * Changed MD5Update to take a void * for easier use and some other
46  * minor cleanup. - Henrik Nordstrom <henrik@henriknordstrom.net>.
47  * Still in the public domain.
48  *
49  * Prefixed all symbols with "Squid" so they don't collide with
50  * other libraries.  Duane Wessels <wessels@squid-cache.org>.
51  * Still in the public domain.
52  *
53  */
54 
55 typedef struct SquidMD5Context {
56     uint32_t buf[4];
57     uint32_t bytes[2];
58     uint32_t in[16];
59 } SquidMD5_CTX;
60 
61 SQUIDCEXTERN void SquidMD5Init(struct SquidMD5Context *context);
62 SQUIDCEXTERN void SquidMD5Update(struct SquidMD5Context *context, const void *buf, unsigned len);
63 SQUIDCEXTERN void SquidMD5Final(uint8_t digest[16], struct SquidMD5Context *context);
64 SQUIDCEXTERN void SquidMD5Transform(uint32_t buf[4], uint32_t const in[16]);
65 
66 #define SQUID_MD5_DIGEST_LENGTH         16
67 
68 #endif /* HAVE_NETTLE_MD5_H */
69 
70 #endif /* SQUID_MD5_H */
71 
72