0.3.5 release.

[onak.git] / md5.h

diff --git a/md5.h b/md5.h
index 65a2159a3f703c338775464c9927dc7a08d447a7..57eba211485f4ad1c002775138099a72b266d030 100644 (file)
--- a/md5.h
+++ b/md5.h
@@ -1,23 +1,96 @@
-#ifndef __MD5_H__
-#define __MD5_H__
+/* Declaration of functions and data types used for MD5 sum computing
+   library functions.
+   Copyright (C) 1995,1996,1997,1999,2000,2001 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#ifndef _MD5_H
+#define _MD5_H 1

 
 #include <stdio.h>
 
 #include <stdio.h>

-#include <stdlib.h>
-#include <string.h>
-#include <assert.h>
+#include <sys/types.h>
+typedef u_int32_t md5_uint32;
+typedef size_t md5_uintptr;
+
+/* Structure to save state of computation between the single steps.  */
+struct md5_ctx
+{
+  char buffer[128];
+  md5_uint32 A;
+  md5_uint32 B;
+  md5_uint32 C;
+  md5_uint32 D;
+
+  md5_uint32 total[2];
+  md5_uint32 buflen;
+};
+
+/*
+ * The following three functions are build up the low level used in
+ * the functions `md5_stream' and `md5_buffer'.
+ */
+
+/* Initialize structure containing state of computation.
+   (RFC 1321, 3.3: Step 3)  */
+extern void md5_init_ctx (struct md5_ctx *ctx);
+
+/* Starting with the result of former calls of this function (or the
+   initialization function update the context for the next LEN bytes
+   starting at BUFFER.
+   It is necessary that LEN is a multiple of 64!!! */
+extern void md5_process_block (const void *buffer, size_t len,
+                                     struct md5_ctx *ctx);
+
+/* Starting with the result of former calls of this function (or the
+   initialization function update the context for the next LEN bytes
+   starting at BUFFER.
+   It is NOT required that LEN is a multiple of 64.  */
+extern void md5_process_bytes (const void *buffer, size_t len,
+                                     struct md5_ctx *ctx);
+
+/* Process the remaining bytes in the buffer and put result from CTX
+   in first 16 bytes following RESBUF.  The result is always in little
+   endian byte order, so that a byte-wise output yields to the wanted
+   ASCII representation of the message digest.
+
+   IMPORTANT: On some systems it is required that RESBUF is correctly
+   aligned for a 32 bits value.  */
+extern void *md5_finish_ctx (struct md5_ctx *ctx, void *resbuf);
+
+
+/* Put result from CTX in first 16 bytes following RESBUF.  The result is
+   always in little endian byte order, so that a byte-wise output yields
+   to the wanted ASCII representation of the message digest.
+
+   IMPORTANT: On some systems it is required that RESBUF is correctly
+   aligned for a 32 bits value.  */
+extern void *md5_read_ctx (const struct md5_ctx *ctx, void *resbuf);

 
 

-#include "bithelp.h"

 
 

-typedef struct {
-    unsigned int  A,B,C,D;       /* chaining variables */
-    unsigned int  nblocks;
-    unsigned char buf[64];
-    int  count;
-} MD5_CONTEXT;
+/* Compute MD5 message digest for bytes read from STREAM.  The
+   resulting message digest number will be written into the 16 bytes
+   beginning at RESBLOCK.  */
+extern int md5_stream (FILE *stream, void *resblock);

 
 

-void md5_init(MD5_CONTEXT *);
-void md5_write(MD5_CONTEXT *, unsigned char *, size_t);
-void md5_final(MD5_CONTEXT *);
-unsigned char *md5_read(MD5_CONTEXT *);
+/* Compute MD5 message digest for LEN bytes beginning at BUFFER.  The
+   result is always in little endian byte order, so that a byte-wise
+   output yields to the wanted ASCII representation of the message
+   digest.  */
+extern void *md5_buffer (const char *buffer, size_t len,
+                               void *resblock);

 
 

-#endif /* __MD5_H__ */
+#endif /* md5.h */