/[dtapublic]/projs/trunk/shared_source/c_datd/esrg_md5.h
ViewVC logotype

Annotation of /projs/trunk/shared_source/c_datd/esrg_md5.h

Parent Directory Parent Directory | Revision Log Revision Log


Revision 56 - (hide annotations) (download)
Sat Oct 29 01:53:01 2016 UTC (7 years, 7 months ago) by dashley
File MIME type: text/plain
File size: 4452 byte(s)
License and property (keyword) changes.
1 dashley 56 //$Header$
2 dashley 25 //-------------------------------------------------------------------------------------------------
3 dashley 56 //This file is part of "David T. Ashley's Shared Source Code", a set of shared components
4     //integrated into many of David T. Ashley's projects.
5 dashley 25 //-------------------------------------------------------------------------------------------------
6 dashley 56 //This source code and any program in which it is compiled/used is provided under the MIT License,
7     //reproduced below.
8     //-------------------------------------------------------------------------------------------------
9     //Permission is hereby granted, free of charge, to any person obtaining a copy of
10     //this software and associated documentation files(the "Software"), to deal in the
11     //Software without restriction, including without limitation the rights to use,
12     //copy, modify, merge, publish, distribute, sublicense, and / or sell copies of the
13     //Software, and to permit persons to whom the Software is furnished to do so,
14     //subject to the following conditions :
15 dashley 25 //
16 dashley 56 //The above copyright notice and this permission notice shall be included in all
17     //copies or substantial portions of the Software.
18 dashley 25 //
19 dashley 56 //THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20     //IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21     //FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
22     //AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
23     //LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
24     //OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
25     //SOFTWARE.
26 dashley 25 //-------------------------------------------------------------------------------------------------
27     #ifndef ESRG_MD5_H_INCLUDED
28     #define ESRG_MD5_H_INCLUDED
29    
30     #ifdef MODULE_ESRG_MD5
31     #define DECMOD_ESRG_MD5
32     #else
33     #define DECMOD_ESRG_MD5 extern
34     #endif
35    
36     //Fundamental state (or RFC 1321 calls it context) for forming
37     //MD5s. Conceptually private to this module.
38     struct ESRG_MD5_Md5StateStruct
39     {
40     unsigned A, B, C, D;
41     //Directly from RFC 1321.
42     unsigned __int64 bit_count;
43     //The count of bits processed thus far. The algorithm here
44     //works in bytes, not bits, so this is advanced by 8 on
45     //each byte processed.
46     unsigned X[16];
47     //These are the words corresponding to the chars. We don't
48     //dare union them because of big-endian/little-endian concerns.
49     //The name "X" comes directly from RFC 1321 nomenclature.
50     unsigned char buf[64];
51     //We can't proceed to execute a round unless we have the
52     //full 512 bits = 16 words = 64 bytes of data. We must
53     //buffer it because we can't count on being called with data
54     //blocks that are a multiple of 64. We may have data hanging
55     //around between calls. We fill up this buffer from the low
56     //end, i.e. [0], then [1], then [2], etc.
57     };
58    
59     //Result structure, used to hold result. Caller is allowed to
60     //pick it apart.
61     struct ESRG_MD5_Md5ResultStruct
62     {
63     unsigned md5_words[4];
64     char md5_chars[33];
65     //Zero terminated string containing MD5 formed.
66     };
67    
68     //Initializes the MD5 calculation structure.
69     DECMOD_ESRG_MD5
70     void ESRG_MD5_Md5StateStructOpen(struct ESRG_MD5_Md5StateStruct *arg);
71    
72     //Adds data to it. Zero length is OK.
73     DECMOD_ESRG_MD5
74     void ESRG_MD5_Md5StateStructAddData(struct ESRG_MD5_Md5StateStruct *arg,
75     void *data,
76     unsigned len);
77    
78     //Closes the structure and returns the MD5. This is destructive--one cannot
79     //continue adding characters. All characters returned are lower-case.
80     DECMOD_ESRG_MD5
81     void ESRG_MD5_Md5StateStructClose(struct ESRG_MD5_Md5StateStruct *state,
82     struct ESRG_MD5_Md5ResultStruct *result);
83    
84     //Returns version control information.
85     DECMOD_ESRG_MD5 const char *ESRG_MD5_cvcinfo(void);
86     DECMOD_ESRG_MD5 const char *ESRG_MD5_hvcinfo(void);
87    
88     //Definition of the version of the H file, used for providing version control
89     //information to external callers.
90 dashley 56 #define ESRG_MD5_H_VERSION ("$Header$")
91 dashley 25
92     #endif
93    
94 dashley 56 //End of esrg_md5.h.

Properties

Name Value
svn:keywords Header

dashley@gmail.com
ViewVC Help
Powered by ViewVC 1.1.25