paludis  Version 2.6.0
sha256.hh
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1 /* vim: set sw=4 sts=4 et foldmethod=syntax : */
2 
3 /*
4  * Copyright (c) 2006, 2007 Ciaran McCreesh
5  *
6  * This file is part of the Paludis package manager. Paludis is free software;
7  * you can redistribute it and/or modify it under the terms of the GNU General
8  * Public License version 2, as published by the Free Software Foundation.
9  *
10  * Paludis is distributed in the hope that it will be useful, but WITHOUT ANY
11  * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
12  * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
13  * details.
14  *
15  * You should have received a copy of the GNU General Public License along with
16  * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
17  * Place, Suite 330, Boston, MA 02111-1307 USA
18  */
19 
20 #ifndef PALUDIS_GUARD_PALUDIS_UTIL_SHA256_HH
21 #define PALUDIS_GUARD_PALUDIS_UTIL_SHA256_HH 1
22 
23 #include <iosfwd>
24 #include <string>
26 #include <inttypes.h>
27 
28 /** \file
29  * Declarations for the SHA256 digest class.
30  *
31  * \ingroup g_digests
32  *
33  * \section Examples
34  *
35  * - None at this time.
36  */
37 
38 namespace paludis
39 {
40  /**
41  * SHA256 digest class.
42  *
43  * \ingroup g_digests
44  */
46  {
47  private:
48  static const PALUDIS_HIDDEN uint32_t _k[64];
49 
50  uint32_t _h[8];
51  uint64_t _size;
52  bool _done_one_pad;
53 
54  void PALUDIS_HIDDEN _update(const uint8_t * const block);
55 
56  inline int PALUDIS_HIDDEN _get(std::istream & stream);
57 
58  public:
59  /**
60  * Constructor.
61  */
62  SHA256(std::istream & stream);
63 
64  /**
65  * Our checksum, as a string of hex characters.
66  */
67  std::string hexsum() const;
68  };
69 }
70 
71 #endif
Definition: about_metadata-fwd.hh:23
#define PALUDIS_HIDDEN
Definition: attributes.hh:60
Definition: sha256.hh:45
#define PALUDIS_VISIBLE
Definition: attributes.hh:59