glib/gchecksum.h

   1 /* gchecksum.h - data hashing functions
   2  *
   3  * Copyright (C) 2007  Emmanuele Bassi  <ebassi@gnome.org>
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Library General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Library General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Library General Public
  16  * License along with this library; if not, write to the
  17  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18  * Boston, MA 02111-1307, USA.
  19  */
  20
  21 #if defined(G_DISABLE_SINGLE_INCLUDES) && !defined (__GLIB_H_INSIDE__) && !defined (GLIB_COMPILATION)
  22 #error "Only <glib.h> can be included directly."
  23 #endif
  24
  25 #ifndef __G_CHECKSUM_H__
  26 #define __G_CHECKSUM_H__
  27
  28 #include <glib/gtypes.h>
  29
  30 G_BEGIN_DECLS
  31
  32 /**
  33  * GChecksumType:
  34  * @G_CHECKSUM_MD5: Use the MD5 hashing algorithm
  35  * @G_CHECKSUM_SHA1: Use the SHA-1 hashing algorithm
  36  * @G_CHECKSUM_SHA256: Use the SHA-256 hashing algorithm
  37  *
  38  * The hashing algorithm to be used by #GChecksum when performing the
  39  * digest of some data.
  40  *
  41  * Note that the #GChecksumType enumeration may be extended at a later
  42  * date to include new hashing algorithm types.
  43  *
  44  * Since: 2.16
  45  */
  46 typedef enum {
  47   G_CHECKSUM_MD5,
  48   G_CHECKSUM_SHA1,
  49   G_CHECKSUM_SHA256
  50 } GChecksumType;
  51
  52 /**
  53  * GChecksum:
  54  *
  55  * An opaque structure representing a checksumming operation.
  56  * To create a new GChecksum, use g_checksum_new(). To free
  57  * a GChecksum, use g_checksum_free().
  58  *
  59  * Since: 2.16
  60  */
  61 typedef struct _GChecksum       GChecksum;
  62
  63 gssize                g_checksum_type_get_length    (GChecksumType    checksum_type);
  64
  65 GChecksum *           g_checksum_new                (GChecksumType    checksum_type);
  66 void                  g_checksum_reset              (GChecksum       *checksum);
  67 GChecksum *           g_checksum_copy               (const GChecksum *checksum);
  68 void                  g_checksum_free               (GChecksum       *checksum);
  69 void                  g_checksum_update             (GChecksum       *checksum,
  70                                                      const guchar    *data,
  71                                                      gssize           length);
  72 G_CONST_RETURN gchar *g_checksum_get_string         (GChecksum       *checksum);
  73 void                  g_checksum_get_digest         (GChecksum       *checksum,
  74                                                      guint8          *buffer,
  75                                                      gsize           *digest_len);
  76
  77 gchar                *g_compute_checksum_for_data   (GChecksumType    checksum_type,
  78                                                      const guchar    *data,
  79                                                      gsize            length);
  80 gchar                *g_compute_checksum_for_string (GChecksumType    checksum_type,
  81                                                      const gchar     *str,
  82                                                      gssize           length);
  83
  84 G_END_DECLS
  85
  86 #endif /* __G_CHECKSUM_H__ */