/ [pam-modules] / trunk / pam_sql / sha1.h
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revision 60 by gray, Tue Sep 5 21:36:24 2006 UTC revision 61 by gray, Mon Aug 27 22:38:35 2007 UTC
# Line 1  Line 1 
1  /*  /* Declarations of functions and data types used for SHA1 sum
2   *  SHA-1 in C     library functions.
3   *  By Steve Reid <steve@edmweb.com>     Copyright (C) 2000, 2001, 2003, 2005, 2006 Free Software Foundation, Inc.
  *  100% Public Domain  
  *  
  *  Version:    $Id$  
  */  
   
 #ifndef _gnu_radius_sha1_h  
 #define _gnu_radius_sha1_h  
   
 #define SHA1_CTX                _pam_mysql_SHA1_CTX  
 #define SHA1Transform           _pam_mysql_SHA1Transform  
 #define SHA1Init                _pam_mysql_SHA1Init  
 #define SHA1Update              _pam_mysql_SHA1Update  
 #define SHA1Final               _pam_mysql_SHA1Final  
   
 typedef struct {  
     unsigned long state[5];  
     unsigned long count[2];  
     unsigned char buffer[64];  
 } SHA1_CTX;  
   
 void SHA1Transform(unsigned long state[5], const unsigned char buffer[64]);  
 void SHA1Init(SHA1_CTX *context);  
 void SHA1Update(SHA1_CTX *context, const unsigned char *data, unsigned int len);  
 void SHA1Final(unsigned char digest[20], SHA1_CTX *context);  
4    
5  #endif /* !_gnu_radius_sha1_h */     This program is free software; you can redistribute it and/or modify it
6       under the terms of the GNU General Public License as published by the
7       Free Software Foundation; either version 2, or (at your option) any
8       later version.
9    
10       This program 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
13       GNU General Public License for more details.
14    
15       You should have received a copy of the GNU General Public License
16       along with this program; if not, write to the Free Software Foundation,
17       Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
18    
19    #ifndef SHA1_H
20    # define SHA1_H 1
21    
22    # include <stdio.h>
23    # include <stdint.h>
24    
25    /* Structure to save state of computation between the single steps.  */
26    struct sha1_ctx
27    {
28      uint32_t A;
29      uint32_t B;
30      uint32_t C;
31      uint32_t D;
32      uint32_t E;
33    
34      uint32_t total[2];
35      uint32_t buflen;
36      uint32_t buffer[32];
37    };
38    
39    
40    #define sha1_init_ctx      _pam_sql_sha1_init_ctx        
41    #define sha1_process_block _pam_sql_sha1_process_block    
42    #define sha1_process_bytes _pam_sql_sha1_process_bytes    
43    #define sha1_finish_ctx    _pam_sql_sha1_finish_ctx      
44    #define sha1_read_ctx      _pam_sql_sha1_read_ctx        
45    #define sha1_stream        _pam_sql_sha1_stream          
46    #define sha1_buffer        _pam_sql_sha1_buffer              
47    
48    /* Initialize structure containing state of computation. */
49    extern void sha1_init_ctx (struct sha1_ctx *ctx);
50    
51    /* Starting with the result of former calls of this function (or the
52       initialization function update the context for the next LEN bytes
53       starting at BUFFER.
54       It is necessary that LEN is a multiple of 64!!! */
55    extern void sha1_process_block (const void *buffer, size_t len,
56                                    struct sha1_ctx *ctx);
57    
58    /* Starting with the result of former calls of this function (or the
59       initialization function update the context for the next LEN bytes
60       starting at BUFFER.
61       It is NOT required that LEN is a multiple of 64.  */
62    extern void sha1_process_bytes (const void *buffer, size_t len,
63                                    struct sha1_ctx *ctx);
64    
65    /* Process the remaining bytes in the buffer and put result from CTX
66       in first 20 bytes following RESBUF.  The result is always in little
67       endian byte order, so that a byte-wise output yields to the wanted
68       ASCII representation of the message digest.
69    
70       IMPORTANT: On some systems it is required that RESBUF be correctly
71       aligned for a 32 bits value.  */
72    extern void *sha1_finish_ctx (struct sha1_ctx *ctx, void *resbuf);
73    
74    
75    /* Put result from CTX in first 20 bytes following RESBUF.  The result is
76       always in little endian byte order, so that a byte-wise output yields
77       to the wanted ASCII representation of the message digest.
78    
79       IMPORTANT: On some systems it is required that RESBUF is correctly
80       aligned for a 32 bits value.  */
81    extern void *sha1_read_ctx (const struct sha1_ctx *ctx, void *resbuf);
82    
83    
84    /* Compute SHA1 message digest for bytes read from STREAM.  The
85       resulting message digest number will be written into the 20 bytes
86       beginning at RESBLOCK.  */
87    extern int sha1_stream (FILE *stream, void *resblock);
88    
89    /* Compute SHA1 message digest for LEN bytes beginning at BUFFER.  The
90       result is always in little endian byte order, so that a byte-wise
91       output yields to the wanted ASCII representation of the message
92       digest.  */
93    extern void *sha1_buffer (const char *buffer, size_t len, void *resblock);
94    
95    #endif

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