X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Fmd5.c;h=d742c54f66514c4b16ec1d54862eeed9053ac693;hb=98cf1a06469c02df32ea978fe6c6514f1c87f2bc;hp=1e988936a480d2bf18f0f9852701381da2169ad4;hpb=0151a413ed4a6045a9d749b03f455fc6873e6fbb;p=gnulib.git

diff --git a/lib/md5.c b/lib/md5.c
index 1e988936a..d742c54f6 100644
--- a/lib/md5.c
+++ b/lib/md5.c
@@ -1,24 +1,24 @@
 /* md5.c - Functions to compute MD5 message digest of files or memory blocks
-Copyright (C) 1996 Free Software Foundation, Inc.
-This file is part of the GNU C Library.
-Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
+   according to the definition of MD5 in RFC 1321 from April 1992.
+   Copyright (C) 1995, 1996 Free Software Foundation, Inc.
+   NOTE: The canonical source of this file is maintained with the GNU C
+   Library.  Bugs can be reported to bug-glibc@prep.ai.mit.edu.
 
-The GNU C Library is free software; you can redistribute it and/or
-modify it under the terms of the GNU Library General Public License as
-published by the Free Software Foundation; either version 2 of the
-License, or (at your option) any later version.
+   This program is free software; you can redistribute it and/or modify it
+   under the terms of the GNU General Public License as published by the
+   Free Software Foundation; either version 2, 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
-Library General Public License for more details.
+   This program 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 General Public License for more details.
 
-You should have received a copy of the GNU Library General Public
-License along with the GNU C Library; see the file COPYING.LIB.  If
-not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA.  */
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software Foundation,
+   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
 
-/* Written by Ulrich Drepper <drepper@gnu.ai.mit.edu>.  */
+/* Written by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995.  */
 
 #ifdef HAVE_CONFIG_H
 # include <config.h>
@@ -72,8 +72,11 @@ md5_init_ctx (ctx)
   ctx->buflen = 0;
 }
 
-/* Put result from CTX in first 16 bytes following RESBUF.  The result must
-   be in little endian byte order.  */
+/* Put result from CTX in first 16 bytes following RESBUF.  The result
+   must be in little endian byte order.
+
+   IMPORTANT: On some systems it is required that RESBUF is correctly
+   aligned for a 32 bits value.  */
 void *
 md5_read_ctx (ctx, resbuf)
      const struct md5_ctx *ctx;
@@ -88,7 +91,10 @@ md5_read_ctx (ctx, resbuf)
 }
 
 /* Process the remaining bytes in the internal buffer and the usual
-   prolog according to the standard and write the result to RESBUF.  */
+   prolog according to the standard and write the result to RESBUF.
+
+   IMPORTANT: On some systems it is required that RESBUF is correctly
+   aligned for a 32 bits value.  */
 void *
 md5_finish_ctx (ctx, resbuf)
      struct md5_ctx *ctx;
@@ -221,7 +227,7 @@ md5_process_bytes (buffer, len, ctx)
 	  ctx->buflen = (left_over + add) & 63;
 	}
 
-      buffer += add;
+      buffer = (const char *) buffer + add;
       len -= add;
     }
 
@@ -229,7 +235,7 @@ md5_process_bytes (buffer, len, ctx)
   if (len > 64)
     {
       md5_process_block (buffer, len & ~63, ctx);
-      buffer += len & ~63;
+      buffer = (const char *) buffer + (len & ~63);
       len &= 63;
     }