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diff --git a/lib/libskey/md4.h b/lib/libskey/md4.h
deleted file mode 100644
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-/* 
- *
- * md4.h -- Header file for implementation of MD4 Message Digest Algorithm
- * Updated: 2/13/90 by Ronald L. Rivest
- * Reformatted and de-linted - 2/12/91 Phil Karn
- *
- * Copyright (C) 1990, RSA Data Security, Inc. 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.
- *
- * $Id: md4.h,v 1.1 1995/10/18 08:43:11 deraadt Exp $
- */
-
-#ifdef  __STDC__
-#define __ARGS(X) X     /* For ANSI C */
-#else
-#define __ARGS(X) ()
-#endif
-
-/* MDstruct is the data structure for a message digest computation. */
-typedef struct {
-	unsigned long buffer[4];/* Holds 4-word result of MD computation */
-	unsigned char count[8];	/* Number of bits processed so far */
-	unsigned int done;	/* Nonzero means MD computation finished */
-} MDstruct, *MDptr;
-
-/* MDbegin(MD)
- * Input: MD -- an MDptr
- * Initialize the MDstruct prepatory to doing a message digest computation.
- */
-extern void MDbegin __ARGS((MDptr MDp));
-
-/* MDupdate(MD,X,count)
- * Input: MD -- an MDptr
- *        X -- a pointer to an array of unsigned characters.
- *        count -- the number of bits of X to use (an unsigned int).
- * Updates MD using the first ``count'' bits of X.
- * The array pointed to by X is not modified.
- * If count is not a multiple of 8, MDupdate uses high bits of last byte.
- * This is the basic input routine for a user.
- * The routine terminates the MD computation when count < 512, so
- * every MD computation should end with one call to MDupdate with a
- * count less than 512.  Zero is OK for a count.
- */
-extern void MDupdate __ARGS((MDptr MDp,unsigned char *X,unsigned int count));
-
-/* MDprint(MD)
- * Input: MD -- an MDptr
- * Prints message digest buffer MD as 32 hexadecimal digits.
- * Order is from low-order byte of buffer[0] to high-order byte of buffer[3].
- * Each byte is printed with high-order hexadecimal digit first.
- */
-extern void MDprint __ARGS((MDptr MDp));
-
-/* End of md4.h */