diff --git a/src/include/md2.h b/src/include/md2.h
new file mode 100644
index 00000000..772b6249
--- /dev/null
+++ b/src/include/md2.h
@@ -0,0 +1,40 @@
+/* MD2.H - header file for MD2C.C
+ * $OpenBSD: md2.h,v 1.1 1996/06/03 22:25:54 niklas Exp $
+ */
+
+/* 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
+   identified as the "RSA Data Security, Inc. MD2 Message Digest
+   Algorithm" in all material mentioning or referencing this software
+   or this function.
+
+   RSA Data Security, Inc. makes no representations concerning either
+   the merchantability of this software or the suitability of this
+   software for any particular purpose. It is provided "as is"
+   without express or implied warranty of any kind.
+
+   These notices must be retained in any copies of any part of this
+   documentation and/or software.
+ */
+
+#ifndef _MD2_H_
+#define _MD2_H_
+
+typedef struct MD2Context {
+  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(MD2_CTX *);
+void   MD2Update(MD2_CTX *, const unsigned char *, unsigned int);
+void   MD2Final(unsigned char [16], MD2_CTX *);
+char * MD2End(MD2_CTX *, char *);
+char * MD2File(char *, char *);
+char * MD2Data(const unsigned char *, unsigned int, char *);
+
+#endif /* _MD2_H_ */
diff --git a/src/include/md4.h b/src/include/md4.h
new file mode 100644
index 00000000..e7442e6b
--- /dev/null
+++ b/src/include/md4.h
@@ -0,0 +1,42 @@
+/* MD4.H - header file for MD4C.C
+ * $OpenBSD: md4.h,v 1.1 1996/06/03 22:25:54 niklas Exp $
+ */
+
+/* Copyright (C) 1991-2, RSA Data Security, Inc. Created 1991. All
+   rights reserved.
+
+   License to copy and use this software is granted provided that it
+   is identified as the "RSA Data Security, Inc. MD4 Message-Digest
+   Algorithm" in all material mentioning or referencing this software
+   or this function.
+   License is also granted to make and use derivative works provided
+   that such works are identified as "derived from the RSA Data
+   Security, Inc. MD4 Message-Digest Algorithm" in all material
+   mentioning or referencing the derived work.
+
+   RSA Data Security, Inc. makes no representations concerning either
+   the merchantability of this software or the suitability of this
+   software for any particular purpose. It is provided "as is"
+   without express or implied warranty of any kind.
+
+   These notices must be retained in any copies of any part of this
+   documentation and/or software.
+ */
+
+#ifndef _MD4_H_
+#define _MD4_H_
+/* MD4 context. */
+typedef struct MD4Context {
+  unsigned long state[4];	/* state (ABCD) */
+  unsigned long count[2];	/* number of bits, modulo 2^64 (lsb first) */
+  unsigned char buffer[64];	/* input buffer */
+} MD4_CTX;
+
+void   MD4Init(MD4_CTX *);
+void   MD4Update(MD4_CTX *, const unsigned char *, unsigned int);
+void   MD4Final(unsigned char [16], MD4_CTX *);
+char * MD4End(MD4_CTX *, char *);
+char * MD4File(char *, char *);
+char * MD4Data(const unsigned char *, unsigned int, char *);
+
+#endif /* _MD4_H_ */
diff --git a/src/include/md5.h b/src/include/md5.h
new file mode 100644
index 00000000..6d67fc88
--- /dev/null
+++ b/src/include/md5.h
@@ -0,0 +1,42 @@
+/* MD5.H - header file for MD5C.C
+ * $OpenBSD: md5.h,v 1.1 1996/06/03 22:25:55 niklas Exp $
+ */
+
+/* Copyright (C) 1991-2, RSA Data Security, Inc. Created 1991. All
+rights reserved.
+
+License to copy and use this software is granted provided that it
+is identified as the "RSA Data Security, Inc. MD5 Message-Digest
+Algorithm" in all material mentioning or referencing this software
+or this function.
+
+License is also granted to make and use derivative works provided
+that such works are identified as "derived from the RSA Data
+Security, Inc. MD5 Message-Digest Algorithm" in all material
+mentioning or referencing the derived work.
+
+RSA Data Security, Inc. makes no representations concerning either
+the merchantability of this software or the suitability of this
+software for any particular purpose. It is provided "as is"
+without express or implied warranty of any kind.
+
+These notices must be retained in any copies of any part of this
+documentation and/or software.
+ */
+
+#ifndef _MD5_H_
+#define _MD5_H_
+/* MD5 context. */
+typedef struct MD5Context {
+  unsigned long state[4];	/* state (ABCD) */
+  unsigned long count[2];	/* number of bits, modulo 2^64 (lsb first) */
+  unsigned char buffer[64];	/* input buffer */
+} MD5_CTX;
+
+void   MD5Init (MD5_CTX *);
+void   MD5Update (MD5_CTX *, const unsigned char *, unsigned int);
+void   MD5Final (unsigned char [16], MD5_CTX *);
+char * MD5End(MD5_CTX *, char *);
+char * MD5File(char *, char *);
+char * MD5Data(const unsigned char *, unsigned int, char *);
+#endif /* _MD5_H_ */