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2.1       kahan       1: <HTML>
                      2: <HEAD>
                      3:   <TITLE>W3C Sample Code Library libwww Generic Message Digest
                      4:   Interface</Title>
                      5: </HEAD>
                      6: <BODY>
                      7: <H1>
                      8:   Generic Message Digest Interface
                      9: </H1>
                     10: <PRE>
                     11: /*
                     12: **     (c) COPYRIGHT W3C, INRIA 1998.
                     13: **     Please first read the full copyright statement in the file COPYRIGHT.
                     14: */
                     15: </PRE>
                     16: <P>
                     17: 
                     18: Contains a generic interface to the message digest algorithms, inspired
                     19: from the RSA-Euro toolkit. For the moment, it only covers MD5.
                     20: SHA and other algorithms could be added later on. This code is only
                     21: used during message digest authentication.
                     22: 
                     23: AUTHORS:
2.3     ! kahan      24:    JK  Jose Kahan       jose@w3.org
2.1       kahan      25: 
                     26: HISTORY:
                     27:         Dec 98 JK      Created the module from scratch
                     28: 
                     29: <P>
                     30: This module is implemented by <A HREF="HTDigest.c">HTDigest.c</A>, and it
                     31: is a part of the <A HREF="http://www.w3.org/Library/">W3C Sample Code
                     32: Library</A>.
                     33: <PRE>
                     34: #ifndef HTDigest_H
                     35: #define HTDigest_H
                     36: /* Library include files */
                     37: #include "WWWLib.h"
                     38: /* add the MD algorithm header files here below */
                     39: #include "md5.h"
                     40: </PRE>
                     41: <H2>
                     42:   Interface to message digest algorithms
                     43: </H2>
                     44: <P>
                     45: The list of known message digest algorithms
                     46: <PRE>
                     47: #define HTDaMD5 1
                     48: </PRE>
                     49: <P>
                     50: This is our general digest context structure. If you add a new
                     51: algorithm, include its context in the union.
                     52: <PRE>
                     53: typedef struct _HTDigestContext {
                     54:   int algorithm;          
                     55:     union { 
                     56:            MD5_CTX md5;
                     57:     } context;
                     58: } HTDigestContext;
                     59: </PRE>
                     60: <P>
                     61: This is a set of generic functions for generating a message digest
                     62: <PRE>
                     63: extern BOOL HTDigest_init (HTDigestContext *context, int digesttype);
                     64: extern BOOL HTDigest_update (HTDigestContext *context, char *input, unsigned int inputLen);
                     65: extern BOOL HTDigest_final (unsigned char *digest, HTDigestContext *context);
                     66: </PRE>
                     67: <PRE>
                     68: #endif /* NOT HTDigest_H */
                     69: </PRE>
                     70: <P>
                     71:   <HR>
                     72: <ADDRESS>
2.3     ! kahan      73:   @(#) $Id: HTDigest.html,v 2.2 1998/12/16 14:48:53 kahan Exp $
2.1       kahan      74: </ADDRESS>
                     75: </BODY></HTML>
                     76: 
                     77: 
                     78: 
                     79: 
                     80:
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