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1 office 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, see <http://www.gnu.org/licenses/>.
17 */
18  
19 #ifndef __G_CHECKSUM_H__
20 #define __G_CHECKSUM_H__
21  
22 #if !defined (__GLIB_H_INSIDE__) && !defined (GLIB_COMPILATION)
23 #error "Only <glib.h> can be included directly."
24 #endif
25  
26 #include <glib/gtypes.h>
27 #include <glib/gbytes.h>
28  
29 G_BEGIN_DECLS
30  
31 /**
32 * GChecksumType:
33 * @G_CHECKSUM_MD5: Use the MD5 hashing algorithm
34 * @G_CHECKSUM_SHA1: Use the SHA-1 hashing algorithm
35 * @G_CHECKSUM_SHA256: Use the SHA-256 hashing algorithm
36 * @G_CHECKSUM_SHA512: Use the SHA-512 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 G_CHECKSUM_SHA512
51 } GChecksumType;
52  
53 /**
54 * GChecksum:
55 *
56 * An opaque structure representing a checksumming operation.
57 * To create a new GChecksum, use g_checksum_new(). To free
58 * a GChecksum, use g_checksum_free().
59 *
60 * Since: 2.16
61 */
62 typedef struct _GChecksum GChecksum;
63  
64 GLIB_AVAILABLE_IN_ALL
65 gssize g_checksum_type_get_length (GChecksumType checksum_type);
66  
67 GLIB_AVAILABLE_IN_ALL
68 GChecksum * g_checksum_new (GChecksumType checksum_type);
69 GLIB_AVAILABLE_IN_ALL
70 void g_checksum_reset (GChecksum *checksum);
71 GLIB_AVAILABLE_IN_ALL
72 GChecksum * g_checksum_copy (const GChecksum *checksum);
73 GLIB_AVAILABLE_IN_ALL
74 void g_checksum_free (GChecksum *checksum);
75 GLIB_AVAILABLE_IN_ALL
76 void g_checksum_update (GChecksum *checksum,
77 const guchar *data,
78 gssize length);
79 GLIB_AVAILABLE_IN_ALL
80 const gchar * g_checksum_get_string (GChecksum *checksum);
81 GLIB_AVAILABLE_IN_ALL
82 void g_checksum_get_digest (GChecksum *checksum,
83 guint8 *buffer,
84 gsize *digest_len);
85  
86 GLIB_AVAILABLE_IN_ALL
87 gchar *g_compute_checksum_for_data (GChecksumType checksum_type,
88 const guchar *data,
89 gsize length);
90 GLIB_AVAILABLE_IN_ALL
91 gchar *g_compute_checksum_for_string (GChecksumType checksum_type,
92 const gchar *str,
93 gssize length);
94  
95 GLIB_AVAILABLE_IN_2_34
96 gchar *g_compute_checksum_for_bytes (GChecksumType checksum_type,
97 GBytes *data);
98  
99 G_END_DECLS
100  
101 #endif /* __G_CHECKSUM_H__ */