1/*
2 * This code is derived from (original license follows):
3 *
4 * This is an OpenSSL-compatible implementation of the RSA Data Security, Inc.
5 * MD5 Message-Digest Algorithm (RFC 1321).
6 *
7 * Homepage:
8 * http://openwall.info/wiki/people/solar/software/public-domain-source-code/md5
9 *
10 * Author:
11 * Alexander Peslyak, better known as Solar Designer <solar at openwall.com>
12 *
13 * This software was written by Alexander Peslyak in 2001.  No copyright is
14 * claimed, and the software is hereby placed in the public domain.
15 * In case this attempt to disclaim copyright and place the software in the
16 * public domain is deemed null and void, then the software is
17 * Copyright (c) 2001 Alexander Peslyak and it is hereby released to the
18 * general public under the following terms:
19 *
20 * Redistribution and use in source and binary forms, with or without
21 * modification, are permitted.
22 *
23 * There's ABSOLUTELY NO WARRANTY, express or implied.
24 *
25 * See md5.c for more information.
26 */
27
28#ifndef LLVM_SYSTEM_MD5_H
29#define LLVM_SYSTEM_MD5_H
30
31#include "llvm/ADT/ArrayRef.h"
32#include "llvm/ADT/SmallString.h"
33#include "llvm/Support/DataTypes.h"
34
35namespace llvm {
36
37class MD5 {
38  // Any 32-bit or wider unsigned integer data type will do.
39  typedef uint32_t MD5_u32plus;
40
41  MD5_u32plus a, b, c, d;
42  MD5_u32plus hi, lo;
43  uint8_t buffer[64];
44  MD5_u32plus block[16];
45
46public:
47  typedef uint8_t MD5Result[16];
48
49  MD5();
50
51  /// \brief Updates the hash for the byte stream provided.
52  void update(ArrayRef<uint8_t> Data);
53
54  /// \brief Updates the hash for the StringRef provided.
55  void update(StringRef Str);
56
57  /// \brief Finishes off the hash and puts the result in result.
58  void final(MD5Result &result);
59
60  /// \brief Translates the bytes in \p Res to a hex string that is
61  /// deposited into \p Str. The result will be of length 32.
62  static void stringifyResult(MD5Result &Res, SmallString<32> &Str);
63
64private:
65  const uint8_t *body(ArrayRef<uint8_t> Data);
66};
67
68}
69
70#endif
71