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diff --git a/src/include/krb5/rsa-md4.h b/src/include/krb5/rsa-md4.h
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index 000000000..2edb67c7a
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+++ b/src/include/krb5/rsa-md4.h
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+/*
+ *	$Source$
+ *	$Author$
+ *	$Id$
+ */
+
+/*
+ * md4.h from RFC1186
+ *
+ * $Log$
+ * Revision 5.0  1990/11/07 14:12:21  jtkohl
+ * Initial code from RFC
+ *
+ */
+
+/*
+** ********************************************************************
+** md4.h -- Header file for implementation of                        **
+** MD4 Message Digest Algorithm                                      **
+** Updated: 2/13/90 by Ronald L. Rivest                              **
+** (C) 1990 RSA Data Security, Inc.                                  **
+** ********************************************************************
+*/
+
+/* MDstruct is the data structure for a message digest computation.
+*/
+typedef struct {
+  unsigned int 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();
+
+/* 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();
+
+/* 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();
+
+/*
+** End of md4.h
+*/