--- rsaref/source/md2.h	2018/04/24 16:37:52	1.1.1.1
+++ rsaref/source/md2.h	2018/04/24 16:38:02	1.1.1.2
@@ -1,7 +1,8 @@
 /* MD2.H - header file for MD2C.C
  */
 
-/* Copyright (C) 1990, RSA Data Security, Inc. All rights reserved.
+/* Copyright (C) 1990-2, RSA Data Security, Inc. Created 1990. All
+   rights reserved.
 
    License to copy and use this software is granted for
    non-commercial Internet Privacy-Enhanced Mail provided that it is
@@ -18,13 +19,27 @@
    documentation and/or software.  
  */
 
+#ifndef _MD2_H_
+#define _MD2_H_ 1
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 typedef struct {
-  unsigned char state[16];                                         /* state */
-  unsigned char checksum[16];                                   /* checksum */
-  unsigned int count;                         /* number of bytes, modulo 16 */
-  unsigned char buffer[16];                                 /* input buffer */
+  unsigned char state[16];                                 /* state */
+  unsigned char checksum[16];                           /* checksum */
+  unsigned int count;                 /* number of bytes, modulo 16 */
+  unsigned char buffer[16];                         /* input buffer */
 } MD2_CTX;
 
 void MD2Init PROTO_LIST ((MD2_CTX *));
-void MD2Update PROTO_LIST ((MD2_CTX *, unsigned char *, unsigned int));
+void MD2Update PROTO_LIST
+  ((MD2_CTX *, unsigned char *, unsigned int));
 void MD2Final PROTO_LIST ((unsigned char [16], MD2_CTX *));
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif