From: mickey <mickey@openbsd.org>
Date: Sun, 30 Mar 1997 22:05:08 +0000 (+0000)
Subject: no more 2(two) md5 libs in kernel!
X-Git-Url: http://artulab.com/gitweb/?a=commitdiff_plain;h=63dd880ec5730a4fb84c45f1447e6a5cd1009e3f;p=openbsd

no more 2(two) md5 libs in kernel!
tested for rnd(4).... should work for ip too, since it's
the copy of ip_md*.
use sys/md5k.h for protos.... std iface forever!
hurray!
---

diff --git a/sys/conf/files b/sys/conf/files
index 55ce565b086..b6bed00ff30 100644
--- a/sys/conf/files
+++ b/sys/conf/files
@@ -1,4 +1,4 @@
-#	$OpenBSD: files,v 1.52 1997/03/23 11:02:58 pefo Exp $
+#	$OpenBSD: files,v 1.53 1997/03/30 22:05:16 mickey Exp $
 #	$NetBSD: files,v 1.87 1996/05/19 17:17:50 jonathan Exp $
 
 #	@(#)files.newconf	7.5 (Berkeley) 5/10/93
@@ -309,7 +309,6 @@ file netinet/ip_ip4.c			inet | ipsec
 file netinet/ip_ahhmacmd5.c		inet | ipsec
 file netinet/ip_ahhmacsha1.c		inet | ipsec
 file netinet/ip_sha1.c			inet | ipsec
-file netinet/ip_md5c.c			inet | ipsec
 file netinet/libdeslite/ecb_enc.c	inet | ipsec
 file netinet/libdeslite/set_key.c	inet | ipsec
 file netinet/ip_esp3desmd5.c		inet | ipsec
diff --git a/sys/dev/rnd.c b/sys/dev/rnd.c
index b501e726c67..4c80d717740 100644
--- a/sys/dev/rnd.c
+++ b/sys/dev/rnd.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: rnd.c,v 1.17 1997/02/04 03:03:18 dm Exp $	*/
+/*	$OpenBSD: rnd.c,v 1.18 1997/03/30 22:05:11 mickey Exp $	*/
 
 /*
  * random.c -- A strong random number generator
@@ -238,6 +238,7 @@
 #include <sys/user.h>
 #include <sys/fcntl.h>
 #include <sys/vnode.h>
+#include <sys/md5k.h>
 
 #include <net/netisr.h>
 
@@ -251,17 +252,6 @@ int	rnd_debug = 0x0000;
 #define	RD_WAIT		0x0100	/* sleep/wakeup for good data */
 #endif
 
-#ifdef	RND_USE_SHA
-#define	HASH_BUFFER_SIZE	5
-#define	HASH_TRANSFORM	SHATransform
-#else	/* RND_USE_MD5 */
-#ifndef	RND_USE_MD5
-#define	RND_USE_MD5
-#endif
-#define	HASH_BUFFER_SIZE	4
-#define	HASH_TRANSFORM	MD5Transform
-#endif
-
 /*
  * The pool is stirred with a primitive polynomial of degree 128
  * over GF(2), namely x^128 + x^99 + x^59 + x^31 + x^9 + x^7 + 1.
@@ -612,7 +602,7 @@ extract_entropy(r, buf, nbytes)
 	int	nbytes;
 {
 	int	ret, i;
-	u_int32_t tmp[HASH_BUFFER_SIZE];
+	MD5_CTX tmp;
 	
 	add_timer_randomness(r, &extract_timer_state, nbytes);
 	
@@ -628,25 +618,20 @@ extract_entropy(r, buf, nbytes)
 
 	while (nbytes) {
 		/* Hash the pool to get the output */
-#ifdef	RND_USE_MD5
-		MD5Init(tmp);
-#endif
+		MD5Init(&tmp);
+
 		for (i = 0; i < POOLWORDS; i += 16)
-			HASH_TRANSFORM(tmp, r->pool+i);
+			MD5Update(&tmp, (u_int8_t*)r->pool+i, 16);
+
 		/* Modify pool so next hash will produce different results */
-		add_entropy_word(r, tmp[0]);
-		add_entropy_word(r, tmp[1]);
-		add_entropy_word(r, tmp[2]);
-		add_entropy_word(r, tmp[3]);
-#ifdef	RND_USE_SHA
-		add_entropy_word(r, tmp[5]);
-#endif
+		for (i = 0; i < sizeof(tmp.buffer)/sizeof(tmp.buffer[0]); i++)
+			add_entropy_word(r, tmp.buffer[i]);
 		/*
 		 * Run the MD5 Transform one more time, since we want
 		 * to add at least minimal obscuring of the inputs to
 		 * add_entropy_word().  --- TYT
 		 */
-		HASH_TRANSFORM(tmp, r->pool);
+		MD5Update(&tmp, (u_int8_t*)r->pool, 16);
 
 		/*
 		 * In case the hash function has some recognizable
@@ -654,24 +639,22 @@ extract_entropy(r, buf, nbytes)
 		 */
 		{
 			register u_int8_t	*cp, *dp;
-			cp = (u_int8_t *) tmp;
-			dp = cp + (HASH_BUFFER_SIZE*sizeof(tmp[0])) - 1;
-			for (i=0; i < HASH_BUFFER_SIZE*sizeof(tmp[0])/2; i++) {
-				*cp ^= *dp;
-				cp++;  dp--;
-			}
+			cp = (u_int8_t *) &tmp.buffer;
+			dp = cp + sizeof(tmp.buffer) - 1;
+			while (cp < dp)
+				*cp++ ^= *dp--;
 		}
 
 		/* Copy data to destination buffer */
-		i = MIN(nbytes, HASH_BUFFER_SIZE*sizeof(tmp[0]));
-		bcopy((caddr_t)tmp, buf, i);
+		i = MIN(nbytes, sizeof(tmp.buffer));
+		bcopy((caddr_t)&tmp.buffer, buf, i);
 		nbytes -= i;
 		buf += i;
 		add_timer_randomness(r, &extract_timer_state, nbytes);
 	}
 
 	/* Wipe data from memory */
-	bzero(tmp, sizeof(tmp));
+	bzero(&tmp, sizeof(tmp));
 	
 	return ret;
 }
diff --git a/sys/lib/libkern/libkern.h b/sys/lib/libkern/libkern.h
index ca270a217ee..e43f0e4fc3b 100644
--- a/sys/lib/libkern/libkern.h
+++ b/sys/lib/libkern/libkern.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: libkern.h,v 1.8 1997/01/18 13:39:29 mickey Exp $	*/
+/*	$OpenBSD: libkern.h,v 1.9 1997/03/30 22:05:10 mickey Exp $	*/
 /*	$NetBSD: libkern.h,v 1.7 1996/03/14 18:52:08 christos Exp $	*/
 
 /*-
@@ -132,7 +132,5 @@ int	 strcmp __P((const char *, const char *));
 int	 strncmp __P((const char *, const char *, size_t));
 int	 strncasecmp __P((const char *, const char *, size_t));
 int	 getsn __P((char *, int));
-void	 MD5Init __P((u_int32_t[4]));
-void	 MD5Transform __P((u_int32_t[4], u_int32_t const [16]));
 
 #endif /* __LIBKERN_H__ */
diff --git a/sys/lib/libkern/md5.c b/sys/lib/libkern/md5.c
index 02e54f8b338..b008505db72 100644
--- a/sys/lib/libkern/md5.c
+++ b/sys/lib/libkern/md5.c
@@ -1,168 +1,383 @@
-/*	$OpenBSD: md5.c,v 1.3 1996/08/11 21:05:46 niklas Exp $	*/
+/*	$OpenBSD: md5.c,v 1.4 1997/03/30 22:05:09 mickey Exp $	*/
 
 /*
- * Copyright (c) 1996 Michael Shalayeff.
- *
- * This software derived from one contributed by Colin Plumb.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- *    must display the following acknowledgement:
- *	This product includes software developed by Colin Plumb.
- * 4. Neither the name of the University nor of the Laboratory may be used
- *    to endorse or promote products derived from this software without
- *    specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
+ * The rest of the code is derived from MD5C.C by RSADSI. Minor cosmetic
+ * changes to accomodate it in the kernel by ji.
+ */
+
+/* MD5C.C - RSA Data Security, Inc., MD5 message-digest algorithm
+ */
+
+/* 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.
  */
 
 /*
- * The code for MD5 transform was taken from Colin Plumb's
- * implementation, which has been placed in the public domain.  The
- * MD5 cryptographic checksum was devised by Ronald Rivest, and is
- * documented in RFC 1321, "The MD5 Message Digest Algorithm".
+ * Additions by JI
  * 
+ * HAVEMEMCOPY is defined if mem* routines are available
+ *
+ * HAVEHTON is defined if htons() and htonl() can be used
+ * for big/little endian conversions
+ *
  */
 
 #include <sys/param.h>
-#include <sys/types.h>
+#include <sys/systm.h>
+#include <sys/md5k.h>
 
-#include <lib/libkern/libkern.h>
+#define HAVEBCOPY
 
-/*
- * MD5 transform algorithm, taken from code written by Colin Plumb,
- * and put into the public domain
- *
- * QUESTION: Replace this with SHA, which as generally received better
- * reviews from the cryptographic community?
+/* Constants for MD5Transform routine.
+ */
+
+#define S11 7
+#define S12 12
+#define S13 17
+#define S14 22
+#define S21 5
+#define S22 9
+#define S23 14
+#define S24 20
+#define S31 4
+#define S32 11
+#define S33 16
+#define S34 23
+#define S41 6
+#define S42 10
+#define S43 15
+#define S44 21
+
+static void MD5Transform __P ((UINT4 [4], unsigned char [64]));
+
+#if BYTE_ORDER == LITTLE_ENDIAN
+#define Encode MD5_memcpy
+#define Decode MD5_memcpy
+#else
+static void Encode __P ((unsigned char *, UINT4 *, unsigned int));
+static void Decode __P ((UINT4 *, unsigned char *, unsigned int));
+#endif
+
+#ifdef HAVEMEMCOPY
+#include <memory.h>
+#define MD5_memcpy	memcpy
+#define MD5_memset	memset
+#else
+#ifdef HAVEBCOPY
+#define MD5_memcpy(_a,_b,_c) bcopy((_b),(_a),(_c))
+#define MD5_memset(_a,_b,_c) bzero((_a),(_c))
+#else
+static void MD5_memcpy __P ((POINTER, POINTER, unsigned int));
+static void MD5_memset __P ((POINTER, int, unsigned int));
+#endif
+#endif
+static unsigned char PADDING[64] = {
+  0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
+};
+
+/* F, G, H and I are basic MD5 functions.
+ */
+#define F(x, y, z) (((x) & (y)) | ((~x) & (z)))
+#define G(x, y, z) (((x) & (z)) | ((y) & (~z)))
+#define H(x, y, z) ((x) ^ (y) ^ (z))
+#define I(x, y, z) ((y) ^ ((x) | (~z)))
+
+/* ROTATE_LEFT rotates x left n bits.
  */
-void
-MD5Init(buf)
-	u_int32_t	buf[4];
+#define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32-(n))))
+
+/* FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4.
+Rotation is separate from addition to prevent recomputation.
+ */
+#define FF(a, b, c, d, x, s, ac) { \
+ (a) += F ((b), (c), (d)) + (x) + (UINT4)(ac); \
+ (a) = ROTATE_LEFT ((a), (s)); \
+ (a) += (b); \
+  }
+#define GG(a, b, c, d, x, s, ac) { \
+ (a) += G ((b), (c), (d)) + (x) + (UINT4)(ac); \
+ (a) = ROTATE_LEFT ((a), (s)); \
+ (a) += (b); \
+  }
+#define HH(a, b, c, d, x, s, ac) { \
+ (a) += H ((b), (c), (d)) + (x) + (UINT4)(ac); \
+ (a) = ROTATE_LEFT ((a), (s)); \
+ (a) += (b); \
+  }
+#define II(a, b, c, d, x, s, ac) { \
+ (a) += I ((b), (c), (d)) + (x) + (UINT4)(ac); \
+ (a) = ROTATE_LEFT ((a), (s)); \
+ (a) += (b); \
+  }
+
+/* MD5 initialization. Begins an MD5 operation, writing a new context.
+ */
+void MD5Init (context)
+MD5_CTX *context;                                        /* context */
 {
-	buf[0] = 0x67452301;
-	buf[1] = 0xefcdab89;
-	buf[2] = 0x98badcfe;
-	buf[3] = 0x10325476;
+  context->count[0] = context->count[1] = 0;
+  /* Load magic initialization constants.
+*/
+  context->state[0] = 0x67452301;
+  context->state[1] = 0xefcdab89;
+  context->state[2] = 0x98badcfe;
+  context->state[3] = 0x10325476;
 }
 
-/* The four core functions - F1 is optimized somewhat */
+/* MD5 block update operation. Continues an MD5 message-digest
+  operation, processing another message block, and updating the
+  context.
+ */
+void MD5Update (context, input, inputLen)
+MD5_CTX *context;                                        /* context */
+unsigned char *input;                                /* input block */
+unsigned int inputLen;                     /* length of input block */
+{
+  unsigned int i, index, partLen;
 
-/* #define F1(x, y, z) (x & y | ~x & z) */
-#define F1(x, y, z) (z ^ (x & (y ^ z)))
-#define F2(x, y, z) F1(z, x, y)
-#define F3(x, y, z) (x ^ y ^ z)
-#define F4(x, y, z) (y ^ (x | ~z))
+  /* Compute number of bytes mod 64 */
+  index = (unsigned int)((context->count[0] >> 3) & 0x3F);
 
-/* This is the central step in the MD5 algorithm. */
-#define MD5STEP(f, w, x, y, z, data, s) \
-	( w += f(x, y, z) + data,  w = w<<s | w>>(32-s),  w += x )
+  /* Update number of bits */
+  if ((context->count[0] += ((UINT4)inputLen << 3))
+   < ((UINT4)inputLen << 3))
+ context->count[1]++;
+  context->count[1] += ((UINT4)inputLen >> 29);
 
-/*
- * The core of the MD5 algorithm, this alters an existing MD5 hash to
- * reflect the addition of 16 longwords of new data.
+  partLen = 64 - index;
+
+  /* Transform as many times as possible.
+*/
+  if (inputLen >= partLen) {
+ MD5_memcpy
+   ((POINTER)&context->buffer[index], (POINTER)input, partLen);
+ MD5Transform (context->state, context->buffer);
+
+ for (i = partLen; i + 63 < inputLen; i += 64)
+   MD5Transform (context->state, &input[i]);
+
+ index = 0;
+  }
+  else
+ i = 0;
+
+  /* Buffer remaining input */
+  MD5_memcpy
+ ((POINTER)&context->buffer[index], (POINTER)&input[i],
+  inputLen-i);
+}
+
+/* MD5 finalization. Ends an MD5 message-digest operation, writing the
+  the message digest and zeroizing the context.
+ */
+void MD5Final (digest, context)
+unsigned char digest[16];                         /* message digest */
+MD5_CTX *context;                                       /* context */
+{
+  unsigned char bits[8];
+  unsigned int index, padLen;
+
+  /* Save number of bits */
+  Encode (bits, context->count, 8);
+
+  /* Pad out to 56 mod 64.
+*/
+  index = (unsigned int)((context->count[0] >> 3) & 0x3f);
+  padLen = (index < 56) ? (56 - index) : (120 - index);
+  MD5Update (context, PADDING, padLen);
+
+  /* Append length (before padding) */
+  MD5Update (context, bits, 8);
+
+  if (digest != NULL)			/* Bill Simpson's padding */
+  {
+	  /* store state in digest */
+	  Encode (digest, context->state, 16);
+
+	  /* Zeroize sensitive information.
+	   */
+	  MD5_memset ((POINTER)context, 0, sizeof (*context));
+  }
+}
+
+/* MD5 basic transformation. Transforms state based on block.
+ */
+static void MD5Transform (state, block)
+UINT4 state[4];
+unsigned char block[64];
+{
+  UINT4 a = state[0], b = state[1], c = state[2], d = state[3], x[16];
+
+  Decode (x, block, 64);
+
+  /* Round 1 */
+  FF (a, b, c, d, x[ 0], S11, 0xd76aa478); /* 1 */
+  FF (d, a, b, c, x[ 1], S12, 0xe8c7b756); /* 2 */
+  FF (c, d, a, b, x[ 2], S13, 0x242070db); /* 3 */
+  FF (b, c, d, a, x[ 3], S14, 0xc1bdceee); /* 4 */
+  FF (a, b, c, d, x[ 4], S11, 0xf57c0faf); /* 5 */
+  FF (d, a, b, c, x[ 5], S12, 0x4787c62a); /* 6 */
+  FF (c, d, a, b, x[ 6], S13, 0xa8304613); /* 7 */
+  FF (b, c, d, a, x[ 7], S14, 0xfd469501); /* 8 */
+  FF (a, b, c, d, x[ 8], S11, 0x698098d8); /* 9 */
+  FF (d, a, b, c, x[ 9], S12, 0x8b44f7af); /* 10 */
+  FF (c, d, a, b, x[10], S13, 0xffff5bb1); /* 11 */
+  FF (b, c, d, a, x[11], S14, 0x895cd7be); /* 12 */
+  FF (a, b, c, d, x[12], S11, 0x6b901122); /* 13 */
+  FF (d, a, b, c, x[13], S12, 0xfd987193); /* 14 */
+  FF (c, d, a, b, x[14], S13, 0xa679438e); /* 15 */
+  FF (b, c, d, a, x[15], S14, 0x49b40821); /* 16 */
+
+ /* Round 2 */
+  GG (a, b, c, d, x[ 1], S21, 0xf61e2562); /* 17 */
+  GG (d, a, b, c, x[ 6], S22, 0xc040b340); /* 18 */
+  GG (c, d, a, b, x[11], S23, 0x265e5a51); /* 19 */
+  GG (b, c, d, a, x[ 0], S24, 0xe9b6c7aa); /* 20 */
+  GG (a, b, c, d, x[ 5], S21, 0xd62f105d); /* 21 */
+  GG (d, a, b, c, x[10], S22,  0x2441453); /* 22 */
+  GG (c, d, a, b, x[15], S23, 0xd8a1e681); /* 23 */
+  GG (b, c, d, a, x[ 4], S24, 0xe7d3fbc8); /* 24 */
+  GG (a, b, c, d, x[ 9], S21, 0x21e1cde6); /* 25 */
+  GG (d, a, b, c, x[14], S22, 0xc33707d6); /* 26 */
+  GG (c, d, a, b, x[ 3], S23, 0xf4d50d87); /* 27 */
+  GG (b, c, d, a, x[ 8], S24, 0x455a14ed); /* 28 */
+  GG (a, b, c, d, x[13], S21, 0xa9e3e905); /* 29 */
+  GG (d, a, b, c, x[ 2], S22, 0xfcefa3f8); /* 30 */
+  GG (c, d, a, b, x[ 7], S23, 0x676f02d9); /* 31 */
+  GG (b, c, d, a, x[12], S24, 0x8d2a4c8a); /* 32 */
+
+  /* Round 3 */
+  HH (a, b, c, d, x[ 5], S31, 0xfffa3942); /* 33 */
+  HH (d, a, b, c, x[ 8], S32, 0x8771f681); /* 34 */
+  HH (c, d, a, b, x[11], S33, 0x6d9d6122); /* 35 */
+  HH (b, c, d, a, x[14], S34, 0xfde5380c); /* 36 */
+  HH (a, b, c, d, x[ 1], S31, 0xa4beea44); /* 37 */
+  HH (d, a, b, c, x[ 4], S32, 0x4bdecfa9); /* 38 */
+  HH (c, d, a, b, x[ 7], S33, 0xf6bb4b60); /* 39 */
+  HH (b, c, d, a, x[10], S34, 0xbebfbc70); /* 40 */
+  HH (a, b, c, d, x[13], S31, 0x289b7ec6); /* 41 */
+  HH (d, a, b, c, x[ 0], S32, 0xeaa127fa); /* 42 */
+  HH (c, d, a, b, x[ 3], S33, 0xd4ef3085); /* 43 */
+  HH (b, c, d, a, x[ 6], S34,  0x4881d05); /* 44 */
+  HH (a, b, c, d, x[ 9], S31, 0xd9d4d039); /* 45 */
+  HH (d, a, b, c, x[12], S32, 0xe6db99e5); /* 46 */
+  HH (c, d, a, b, x[15], S33, 0x1fa27cf8); /* 47 */
+  HH (b, c, d, a, x[ 2], S34, 0xc4ac5665); /* 48 */
+
+  /* Round 4 */
+  II (a, b, c, d, x[ 0], S41, 0xf4292244); /* 49 */
+  II (d, a, b, c, x[ 7], S42, 0x432aff97); /* 50 */
+  II (c, d, a, b, x[14], S43, 0xab9423a7); /* 51 */
+  II (b, c, d, a, x[ 5], S44, 0xfc93a039); /* 52 */
+  II (a, b, c, d, x[12], S41, 0x655b59c3); /* 53 */
+  II (d, a, b, c, x[ 3], S42, 0x8f0ccc92); /* 54 */
+  II (c, d, a, b, x[10], S43, 0xffeff47d); /* 55 */
+  II (b, c, d, a, x[ 1], S44, 0x85845dd1); /* 56 */
+  II (a, b, c, d, x[ 8], S41, 0x6fa87e4f); /* 57 */
+  II (d, a, b, c, x[15], S42, 0xfe2ce6e0); /* 58 */
+  II (c, d, a, b, x[ 6], S43, 0xa3014314); /* 59 */
+  II (b, c, d, a, x[13], S44, 0x4e0811a1); /* 60 */
+  II (a, b, c, d, x[ 4], S41, 0xf7537e82); /* 61 */
+  II (d, a, b, c, x[11], S42, 0xbd3af235); /* 62 */
+  II (c, d, a, b, x[ 2], S43, 0x2ad7d2bb); /* 63 */
+  II (b, c, d, a, x[ 9], S44, 0xeb86d391); /* 64 */
+
+  state[0] += a;
+  state[1] += b;
+  state[2] += c;
+  state[3] += d;
+
+  /* Zeroize sensitive information.
+*/
+  MD5_memset ((POINTER)x, 0, sizeof (x));
+}
+
+#if BYTE_ORDER != LITTLE_ENDIAN
+
+/* Encodes input (UINT4) into output (unsigned char). Assumes len is
+  a multiple of 4.
+ */
+static void Encode (output, input, len)
+unsigned char *output;
+UINT4 *input;
+unsigned int len;
+{
+  unsigned int i, j;
+
+  for (i = 0, j = 0; j < len; i++, j += 4) {
+ output[j] = (unsigned char)(input[i] & 0xff);
+ output[j+1] = (unsigned char)((input[i] >> 8) & 0xff);
+ output[j+2] = (unsigned char)((input[i] >> 16) & 0xff);
+ output[j+3] = (unsigned char)((input[i] >> 24) & 0xff);
+  }
+}
+
+/* Decodes input (unsigned char) into output (UINT4). Assumes len is
+  a multiple of 4.
  */
-void
-MD5Transform(buf, in)
-	u_int32_t	buf[4];
-	u_int32_t const in[16];
+static void Decode (output, input, len)
+UINT4 *output;
+unsigned char *input;
+unsigned int len;
 {
-	u_int32_t	a, b, c, d;
-
-	a = buf[0];
-	b = buf[1];
-	c = buf[2];
-	d = buf[3];
-
-	MD5STEP(F1, a, b, c, d, in[ 0]+0xd76aa478,  7);
-	MD5STEP(F1, d, a, b, c, in[ 1]+0xe8c7b756, 12);
-	MD5STEP(F1, c, d, a, b, in[ 2]+0x242070db, 17);
-	MD5STEP(F1, b, c, d, a, in[ 3]+0xc1bdceee, 22);
-	MD5STEP(F1, a, b, c, d, in[ 4]+0xf57c0faf,  7);
-	MD5STEP(F1, d, a, b, c, in[ 5]+0x4787c62a, 12);
-	MD5STEP(F1, c, d, a, b, in[ 6]+0xa8304613, 17);
-	MD5STEP(F1, b, c, d, a, in[ 7]+0xfd469501, 22);
-	MD5STEP(F1, a, b, c, d, in[ 8]+0x698098d8,  7);
-	MD5STEP(F1, d, a, b, c, in[ 9]+0x8b44f7af, 12);
-	MD5STEP(F1, c, d, a, b, in[10]+0xffff5bb1, 17);
-	MD5STEP(F1, b, c, d, a, in[11]+0x895cd7be, 22);
-	MD5STEP(F1, a, b, c, d, in[12]+0x6b901122,  7);
-	MD5STEP(F1, d, a, b, c, in[13]+0xfd987193, 12);
-	MD5STEP(F1, c, d, a, b, in[14]+0xa679438e, 17);
-	MD5STEP(F1, b, c, d, a, in[15]+0x49b40821, 22);
-
-	MD5STEP(F2, a, b, c, d, in[ 1]+0xf61e2562,  5);
-	MD5STEP(F2, d, a, b, c, in[ 6]+0xc040b340,  9);
-	MD5STEP(F2, c, d, a, b, in[11]+0x265e5a51, 14);
-	MD5STEP(F2, b, c, d, a, in[ 0]+0xe9b6c7aa, 20);
-	MD5STEP(F2, a, b, c, d, in[ 5]+0xd62f105d,  5);
-	MD5STEP(F2, d, a, b, c, in[10]+0x02441453,  9);
-	MD5STEP(F2, c, d, a, b, in[15]+0xd8a1e681, 14);
-	MD5STEP(F2, b, c, d, a, in[ 4]+0xe7d3fbc8, 20);
-	MD5STEP(F2, a, b, c, d, in[ 9]+0x21e1cde6,  5);
-	MD5STEP(F2, d, a, b, c, in[14]+0xc33707d6,  9);
-	MD5STEP(F2, c, d, a, b, in[ 3]+0xf4d50d87, 14);
-	MD5STEP(F2, b, c, d, a, in[ 8]+0x455a14ed, 20);
-	MD5STEP(F2, a, b, c, d, in[13]+0xa9e3e905,  5);
-	MD5STEP(F2, d, a, b, c, in[ 2]+0xfcefa3f8,  9);
-	MD5STEP(F2, c, d, a, b, in[ 7]+0x676f02d9, 14);
-	MD5STEP(F2, b, c, d, a, in[12]+0x8d2a4c8a, 20);
-
-	MD5STEP(F3, a, b, c, d, in[ 5]+0xfffa3942,  4);
-	MD5STEP(F3, d, a, b, c, in[ 8]+0x8771f681, 11);
-	MD5STEP(F3, c, d, a, b, in[11]+0x6d9d6122, 16);
-	MD5STEP(F3, b, c, d, a, in[14]+0xfde5380c, 23);
-	MD5STEP(F3, a, b, c, d, in[ 1]+0xa4beea44,  4);
-	MD5STEP(F3, d, a, b, c, in[ 4]+0x4bdecfa9, 11);
-	MD5STEP(F3, c, d, a, b, in[ 7]+0xf6bb4b60, 16);
-	MD5STEP(F3, b, c, d, a, in[10]+0xbebfbc70, 23);
-	MD5STEP(F3, a, b, c, d, in[13]+0x289b7ec6,  4);
-	MD5STEP(F3, d, a, b, c, in[ 0]+0xeaa127fa, 11);
-	MD5STEP(F3, c, d, a, b, in[ 3]+0xd4ef3085, 16);
-	MD5STEP(F3, b, c, d, a, in[ 6]+0x04881d05, 23);
-	MD5STEP(F3, a, b, c, d, in[ 9]+0xd9d4d039,  4);
-	MD5STEP(F3, d, a, b, c, in[12]+0xe6db99e5, 11);
-	MD5STEP(F3, c, d, a, b, in[15]+0x1fa27cf8, 16);
-	MD5STEP(F3, b, c, d, a, in[ 2]+0xc4ac5665, 23);
-
-	MD5STEP(F4, a, b, c, d, in[ 0]+0xf4292244,  6);
-	MD5STEP(F4, d, a, b, c, in[ 7]+0x432aff97, 10);
-	MD5STEP(F4, c, d, a, b, in[14]+0xab9423a7, 15);
-	MD5STEP(F4, b, c, d, a, in[ 5]+0xfc93a039, 21);
-	MD5STEP(F4, a, b, c, d, in[12]+0x655b59c3,  6);
-	MD5STEP(F4, d, a, b, c, in[ 3]+0x8f0ccc92, 10);
-	MD5STEP(F4, c, d, a, b, in[10]+0xffeff47d, 15);
-	MD5STEP(F4, b, c, d, a, in[ 1]+0x85845dd1, 21);
-	MD5STEP(F4, a, b, c, d, in[ 8]+0x6fa87e4f,  6);
-	MD5STEP(F4, d, a, b, c, in[15]+0xfe2ce6e0, 10);
-	MD5STEP(F4, c, d, a, b, in[ 6]+0xa3014314, 15);
-	MD5STEP(F4, b, c, d, a, in[13]+0x4e0811a1, 21);
-	MD5STEP(F4, a, b, c, d, in[ 4]+0xf7537e82,  6);
-	MD5STEP(F4, d, a, b, c, in[11]+0xbd3af235, 10);
-	MD5STEP(F4, c, d, a, b, in[ 2]+0x2ad7d2bb, 15);
-	MD5STEP(F4, b, c, d, a, in[ 9]+0xeb86d391, 21);
-
-	buf[0] += a;
-	buf[1] += b;
-	buf[2] += c;
-	buf[3] += d;
+  unsigned int i, j;
+
+  for (i = 0, j = 0; j < len; i++, j += 4)
+ output[i] = ((UINT4)input[j]) | (((UINT4)input[j+1]) << 8) |
+   (((UINT4)input[j+2]) << 16) | (((UINT4)input[j+3]) << 24);
 }
 
+#endif
+
+#ifndef HAVEMEMCOPY
+#ifndef HAVEBCOPY
+/* Note: Replace "for loop" with standard memcpy if possible.
+ */
+
+static void MD5_memcpy (output, input, len)
+POINTER output;
+POINTER input;
+unsigned int len;
+{
+  unsigned int i;
+
+  for (i = 0; i < len; i++)
+
+ output[i] = input[i];
+}
+
+/* Note: Replace "for loop" with standard memset if possible.
+ */
+static void MD5_memset (output, value, len)
+POINTER output;
+int value;
+unsigned int len;
+{
+  unsigned int i;
+
+  for (i = 0; i < len; i++)
+ ((char *)output)[i] = (char)value;
+}
+#endif
+#endif
+	
diff --git a/sys/netinet/ip_ah.h b/sys/netinet/ip_ah.h
index 8d87dc06766..3a591b70eea 100644
--- a/sys/netinet/ip_ah.h
+++ b/sys/netinet/ip_ah.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: ip_ah.h,v 1.4 1997/02/26 02:38:11 angelos Exp $	*/
+/*	$OpenBSD: ip_ah.h,v 1.5 1997/03/30 22:05:11 mickey Exp $	*/
 
 /*
  * The author of this code is John Ioannidis, ji@tla.org,
@@ -28,7 +28,7 @@
  * Per RFC1826 (Atkinson, 1995)
  */
 
-#include <netinet/ip_md5.h>
+#include <sys/md5k.h>
 #include <netinet/ip_sha1.h>
 
 struct ah
diff --git a/sys/netinet/ip_ahhmacmd5.c b/sys/netinet/ip_ahhmacmd5.c
index 1191de75bc6..5c42d67f793 100644
--- a/sys/netinet/ip_ahhmacmd5.c
+++ b/sys/netinet/ip_ahhmacmd5.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: ip_ahhmacmd5.c,v 1.6 1997/03/09 07:03:20 angelos Exp $	*/
+/*	$OpenBSD: ip_ahhmacmd5.c,v 1.7 1997/03/30 22:05:12 mickey Exp $	*/
 
 /*
  * The author of this code is John Ioannidis, ji@tla.org,
@@ -109,8 +109,8 @@ ahhmacmd5_init(struct tdb *tdbp, struct xformsw *xsp, struct mbuf *m)
 	xd->amx_bitmap = 0;
 	xd->amx_wnd = txd.amx_wnd;
 	
-	realMD5Init(&(xd->amx_ictx));
-	realMD5Init(&(xd->amx_octx));
+	MD5Init(&(xd->amx_ictx));
+	MD5Init(&(xd->amx_octx));
 	
 	for (len = 0; len < AHHMACMD5_KMAX; len++)
 	  txd.amx_key[len] ^= HMACMD5_IPAD_VAL;
diff --git a/sys/netinet/ip_ahmd5.c b/sys/netinet/ip_ahmd5.c
index 246e5b852a8..ba05ba204b0 100644
--- a/sys/netinet/ip_ahmd5.c
+++ b/sys/netinet/ip_ahmd5.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: ip_ahmd5.c,v 1.3 1997/02/26 03:01:04 angelos Exp $	*/
+/*	$OpenBSD: ip_ahmd5.c,v 1.4 1997/03/30 22:05:13 mickey Exp $	*/
 
 /*
  * The author of this code is John Ioannidis, ji@tla.org,
@@ -166,7 +166,7 @@ ahmd5_input(struct mbuf *m, struct tdb *tdb)
 	ipo.ip_ttl = 0;
 	ipo.ip_sum = 0;
 
-	realMD5Init(&ctx);
+	MD5Init(&ctx);
 	MD5Update(&ctx, (unsigned char *)xd->amx_key, xd->amx_klen);
 	MD5Final(NULL, &ctx);		/* non-std usage of MD5Final! */
 	MD5Update(&ctx, (unsigned char *)&ipo, sizeof (struct ip));
@@ -290,7 +290,7 @@ ahmd5_output(struct mbuf *m, struct sockaddr_encap *gw, struct tdb *tdb, struct
 	aho.ah_rv = 0;
 	aho.ah_spi = tdb->tdb_spi;
 
-	realMD5Init(&ctx);
+	MD5Init(&ctx);
 
 	MD5Update(&ctx, (unsigned char *)xd->amx_key, xd->amx_klen);
 	MD5Final(NULL, &ctx);
diff --git a/sys/netinet/ip_esp.h b/sys/netinet/ip_esp.h
index 02bb47e768f..62cd435a62a 100644
--- a/sys/netinet/ip_esp.h
+++ b/sys/netinet/ip_esp.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: ip_esp.h,v 1.4 1997/02/26 20:53:13 deraadt Exp $	*/
+/*	$OpenBSD: ip_esp.h,v 1.5 1997/03/30 22:05:13 mickey Exp $	*/
 
 /*
  * The author of this code is John Ioannidis, ji@tla.org,
@@ -29,7 +29,7 @@
  */
 
 #ifndef _MD5_H_
-#include <netinet/ip_md5.h>
+#include <sys/md5k.h>
 #endif
 
 #define ESPDESMD5_KEYSZ		64
diff --git a/sys/netinet/ip_esp3desmd5.c b/sys/netinet/ip_esp3desmd5.c
index ea6f9c02007..e85517d95bf 100644
--- a/sys/netinet/ip_esp3desmd5.c
+++ b/sys/netinet/ip_esp3desmd5.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: ip_esp3desmd5.c,v 1.3 1997/02/26 20:53:14 deraadt Exp $	*/
+/*	$OpenBSD: ip_esp3desmd5.c,v 1.4 1997/03/30 22:05:14 mickey Exp $	*/
 
 /*
  * The author of this code is John Ioannidis, ji@tla.org,
@@ -145,7 +145,7 @@ esp3desmd5_init(struct tdb *tdbp, struct xformsw *xsp, struct mbuf *m)
 		  buf[len] = txd.edx_initiator ? ESP3DESMD5_IPADI :
 						 ESP3DESMD5_IPADR;
 
-		realMD5Init(&ctx);
+		MD5Init(&ctx);
 		MD5Update(&ctx, buf, ESP3DESMD5_KEYSZ);
 		MD5Update(&ctx, txd.edx_key, txd.edx_keylen);
 	 	MD5Final(buf, &ctx);
@@ -165,21 +165,21 @@ esp3desmd5_init(struct tdb *tdbp, struct xformsw *xsp, struct mbuf *m)
 	  buf[len] = txd.edx_initiator ? ESP3DESMD5_DPADI : ESP3DESMD5_DPADR;
 
 	buf[0] = 0;
-	realMD5Init(&ctx);
+	MD5Init(&ctx);
 	MD5Update(&ctx, buf, ESP3DESMD5_KEYSZ);
 	MD5Update(&ctx, txd.edx_key, txd.edx_keylen);
 	MD5Final(buf, &ctx);
 	des_set_key((caddr_t)buf, (caddr_t)(xd->edx_eks[0]));
 
 	buf[0] = 1;
-	realMD5Init(&ctx);
+	MD5Init(&ctx);
 	MD5Update(&ctx, buf, ESP3DESMD5_KEYSZ);
 	MD5Update(&ctx, txd.edx_key, txd.edx_keylen);
 	MD5Final(buf, &ctx);
 	des_set_key((caddr_t)buf, (caddr_t)(xd->edx_eks[1]));
 
 	buf[0] = 2;
-	realMD5Init(&ctx);
+	MD5Init(&ctx);
 	MD5Update(&ctx, buf, ESP3DESMD5_KEYSZ);
 	MD5Update(&ctx, txd.edx_key, txd.edx_keylen);
 	MD5Final(buf, &ctx);
@@ -187,7 +187,7 @@ esp3desmd5_init(struct tdb *tdbp, struct xformsw *xsp, struct mbuf *m)
 
 	/* HMAC contexts */
 
-	realMD5Init(&ctx);
+	MD5Init(&ctx);
 	for (len = 0; len < ESP3DESMD5_KEYSZ; len++)
 	  buf[len] = txd.edx_initiator ? ESP3DESMD5_HPADI : ESP3DESMD5_HPADR;
 
@@ -200,14 +200,14 @@ esp3desmd5_init(struct tdb *tdbp, struct xformsw *xsp, struct mbuf *m)
 	for (len = 0; len < ESP3DESMD5_KEYSZ; len++)
 	  buf[len] ^= ESP3DESMD5_IPAD_VAL;
 
-	realMD5Init(&ctx);
+	MD5Init(&ctx);
 	MD5Update(&ctx, buf, ESP3DESMD5_KEYSZ);
 	xd->edx_ictx = ctx;
 
 	for (len = 0; len < ESP3DESMD5_KEYSZ; len++)
 	  buf[len] ^= (ESP3DESMD5_IPAD_VAL ^ ESP3DESMD5_OPAD_VAL);
 
-	realMD5Init(&ctx);
+	MD5Init(&ctx);
 	MD5Update(&ctx, buf, ESP3DESMD5_KEYSZ);
 	xd->edx_octx = ctx;
 	
@@ -217,7 +217,7 @@ esp3desmd5_init(struct tdb *tdbp, struct xformsw *xsp, struct mbuf *m)
 	  buf[len] = txd.edx_initiator ? ESP3DESMD5_RPADI : 
 						 ESP3DESMD5_RPADR;
 
-	realMD5Init(&ctx);
+	MD5Init(&ctx);
 	MD5Update(&ctx, buf, ESP3DESMD5_KEYSZ);
 	MD5Update(&ctx, txd.edx_key, txd.edx_keylen);
 	MD5Final(buf, &ctx);
diff --git a/sys/netinet/ip_espdesmd5.c b/sys/netinet/ip_espdesmd5.c
index bf10750b2e3..40f01a8171f 100644
--- a/sys/netinet/ip_espdesmd5.c
+++ b/sys/netinet/ip_espdesmd5.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: ip_espdesmd5.c,v 1.4 1997/03/28 09:48:37 provos Exp $	*/
+/*	$OpenBSD: ip_espdesmd5.c,v 1.5 1997/03/30 22:05:14 mickey Exp $	*/
 
 /*
  * The author of this code is John Ioannidis, ji@tla.org,
@@ -145,7 +145,7 @@ espdesmd5_init(struct tdb *tdbp, struct xformsw *xsp, struct mbuf *m)
 		  buf[len] = txd.edx_initiator ? ESPDESMD5_IPADI :
 						 ESPDESMD5_IPADR;
 
-		realMD5Init(&ctx);
+		MD5Init(&ctx);
 		MD5Update(&ctx, buf, ESPDESMD5_KEYSZ);
 		MD5Update(&ctx, txd.edx_key, txd.edx_keylen);
 	 	MD5Final(buf, &ctx);
@@ -161,7 +161,7 @@ espdesmd5_init(struct tdb *tdbp, struct xformsw *xsp, struct mbuf *m)
 
 	/* DES key */
 
-	realMD5Init(&ctx);
+	MD5Init(&ctx);
 	for (len = 0; len < ESPDESMD5_KEYSZ; len++)
 	  buf[len] = txd.edx_initiator ? ESPDESMD5_DPADI : ESPDESMD5_DPADR;
 	 
@@ -172,7 +172,7 @@ espdesmd5_init(struct tdb *tdbp, struct xformsw *xsp, struct mbuf *m)
 
 	/* HMAC contexts */
 
-	realMD5Init(&ctx);
+	MD5Init(&ctx);
 	for (len = 0; len < ESPDESMD5_KEYSZ; len++)
 	  buf[len] = txd.edx_initiator ? ESPDESMD5_HPADI : ESPDESMD5_HPADR;
 
@@ -185,14 +185,14 @@ espdesmd5_init(struct tdb *tdbp, struct xformsw *xsp, struct mbuf *m)
 	for (len = 0; len < ESPDESMD5_KEYSZ; len++)
 	  buf[len] ^= ESPDESMD5_IPAD_VAL;
 
-	realMD5Init(&ctx);
+	MD5Init(&ctx);
 	MD5Update(&ctx, buf, ESPDESMD5_KEYSZ);
 	xd->edx_ictx = ctx;
 
 	for (len = 0; len < ESPDESMD5_KEYSZ; len++)
 	  buf[len] ^= (ESPDESMD5_IPAD_VAL ^ ESPDESMD5_OPAD_VAL);
 
-	realMD5Init(&ctx);
+	MD5Init(&ctx);
 	MD5Update(&ctx, buf, ESPDESMD5_KEYSZ);
 	xd->edx_octx = ctx;
 	
@@ -202,7 +202,7 @@ espdesmd5_init(struct tdb *tdbp, struct xformsw *xsp, struct mbuf *m)
 	  buf[len] = txd.edx_initiator ? ESPDESMD5_RPADI : 
 						 ESPDESMD5_RPADR;
 
-	realMD5Init(&ctx);
+	MD5Init(&ctx);
 	MD5Update(&ctx, buf, ESPDESMD5_KEYSZ);
 	MD5Update(&ctx, txd.edx_key, txd.edx_keylen);
 	MD5Final(buf, &ctx);
diff --git a/sys/netinet/ip_md5.h b/sys/netinet/ip_md5.h
deleted file mode 100644
index aec667eb63f..00000000000
--- a/sys/netinet/ip_md5.h
+++ /dev/null
@@ -1,73 +0,0 @@
-/*	$OpenBSD: ip_md5.h,v 1.2 1997/02/24 14:06:43 niklas Exp $	*/
-
-/* GLOBAL.H - RSAREF types and constants
- */
-
-/* PROTOTYPES should be set to one if and only if the compiler supports
-     function argument prototyping.
-   The following makes PROTOTYPES default to 0 if it has not already
-     been defined with C compiler flags.
- */
-#ifndef PROTOTYPES
-#define PROTOTYPES 1
-#endif
-
-/* POINTER defines a generic pointer type */
-typedef unsigned char *POINTER;
-
-/* UINT2 defines a two byte word */
-typedef unsigned short int UINT2;
-
-/* UINT4 defines a four byte word */
-typedef unsigned long int UINT4;
-
-/* PROTO_LIST is defined depending on how PROTOTYPES is defined above.
-   If using PROTOTYPES, then PROTO_LIST returns the list, otherwise it
-     returns an empty list.
- */
-
-#if PROTOTYPES
-#define PROTO_LIST(list) list
-#else
-#define PROTO_LIST(list) ()
-#endif
-
-
-/* MD5.H - header file for MD5C.C
- */
-
-/* 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.
- */
-
-/* MD5 context. */
-typedef struct {
-  UINT4 state[4];                                   /* state (ABCD) */
-  UINT4 count[2];        /* number of bits, modulo 2^64 (lsb first) */
-  unsigned char buffer[64];                         /* input buffer */
-} MD5_CTX;
-
-void realMD5Init PROTO_LIST ((MD5_CTX *));
-void MD5Update PROTO_LIST
-  ((MD5_CTX *, unsigned char *, unsigned int));
-void MD5Final PROTO_LIST ((unsigned char [16], MD5_CTX *));
-
-#define _MD5_H_
diff --git a/sys/netinet/ip_md5c.c b/sys/netinet/ip_md5c.c
deleted file mode 100644
index 8b98141f2c1..00000000000
--- a/sys/netinet/ip_md5c.c
+++ /dev/null
@@ -1,388 +0,0 @@
-/*	$OpenBSD: ip_md5c.c,v 1.3 1997/02/24 14:06:43 niklas Exp $	*/
-
-/*
- * The rest of the code is derived from MD5C.C by RSADSI. Minor cosmetic
- * changes to accomodate it in the kernel by ji.
- */
-
-/* MD5C.C - RSA Data Security, Inc., MD5 message-digest algorithm
- */
-
-/* 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.
- */
-
-/*
- * Additions by JI
- * 
- * HAVEMEMCOPY is defined if mem* routines are available
- *
- * HAVEHTON is defined if htons() and htonl() can be used
- * for big/little endian conversions
- *
- */
-
-#include <sys/param.h>
-#include <sys/systm.h>
-
-#include <netinet/ip_md5.h>
-
-#define HAVEBCOPY
-
-/* Constants for MD5Transform routine.
- */
-
-#define S11 7
-#define S12 12
-#define S13 17
-#define S14 22
-#define S21 5
-#define S22 9
-#define S23 14
-#define S24 20
-#define S31 4
-#define S32 11
-#define S33 16
-#define S34 23
-#define S41 6
-#define S42 10
-#define S43 15
-#define S44 21
-
-#define MD5Transform _MD5Transform
-
-static void MD5Transform PROTO_LIST ((UINT4 [4], unsigned char [64]));
-
-#if BYTE_ORDER == LITTLE_ENDIAN
-#define Encode MD5_memcpy
-#define Decode MD5_memcpy
-#else
-static void Encode PROTO_LIST
-  ((unsigned char *, UINT4 *, unsigned int));
-static void Decode PROTO_LIST
-  ((UINT4 *, unsigned char *, unsigned int));
-#endif
-
-#ifdef HAVEMEMCOPY
-#include <memory.h>
-#define MD5_memcpy	memcpy
-#define MD5_memset	memset
-#else
-#ifdef HAVEBCOPY
-#define MD5_memcpy(_a,_b,_c) bcopy((_b),(_a),(_c))
-#define MD5_memset(_a,_b,_c) bzero((_a),(_c))
-#else
-static void MD5_memcpy PROTO_LIST ((POINTER, POINTER, unsigned int));
-static void MD5_memset PROTO_LIST ((POINTER, int, unsigned int));
-#endif
-#endif
-static unsigned char PADDING[64] = {
-  0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
-};
-
-/* F, G, H and I are basic MD5 functions.
- */
-#define F(x, y, z) (((x) & (y)) | ((~x) & (z)))
-#define G(x, y, z) (((x) & (z)) | ((y) & (~z)))
-#define H(x, y, z) ((x) ^ (y) ^ (z))
-#define I(x, y, z) ((y) ^ ((x) | (~z)))
-
-/* ROTATE_LEFT rotates x left n bits.
- */
-#define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32-(n))))
-
-/* FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4.
-Rotation is separate from addition to prevent recomputation.
- */
-#define FF(a, b, c, d, x, s, ac) { \
- (a) += F ((b), (c), (d)) + (x) + (UINT4)(ac); \
- (a) = ROTATE_LEFT ((a), (s)); \
- (a) += (b); \
-  }
-#define GG(a, b, c, d, x, s, ac) { \
- (a) += G ((b), (c), (d)) + (x) + (UINT4)(ac); \
- (a) = ROTATE_LEFT ((a), (s)); \
- (a) += (b); \
-  }
-#define HH(a, b, c, d, x, s, ac) { \
- (a) += H ((b), (c), (d)) + (x) + (UINT4)(ac); \
- (a) = ROTATE_LEFT ((a), (s)); \
- (a) += (b); \
-  }
-#define II(a, b, c, d, x, s, ac) { \
- (a) += I ((b), (c), (d)) + (x) + (UINT4)(ac); \
- (a) = ROTATE_LEFT ((a), (s)); \
- (a) += (b); \
-  }
-
-/* MD5 initialization. Begins an MD5 operation, writing a new context.
- */
-void realMD5Init (context)
-MD5_CTX *context;                                        /* context */
-{
-  context->count[0] = context->count[1] = 0;
-  /* Load magic initialization constants.
-*/
-  context->state[0] = 0x67452301;
-  context->state[1] = 0xefcdab89;
-  context->state[2] = 0x98badcfe;
-  context->state[3] = 0x10325476;
-}
-
-/* MD5 block update operation. Continues an MD5 message-digest
-  operation, processing another message block, and updating the
-  context.
- */
-void MD5Update (context, input, inputLen)
-MD5_CTX *context;                                        /* context */
-unsigned char *input;                                /* input block */
-unsigned int inputLen;                     /* length of input block */
-{
-  unsigned int i, index, partLen;
-
-  /* Compute number of bytes mod 64 */
-  index = (unsigned int)((context->count[0] >> 3) & 0x3F);
-
-  /* Update number of bits */
-  if ((context->count[0] += ((UINT4)inputLen << 3))
-   < ((UINT4)inputLen << 3))
- context->count[1]++;
-  context->count[1] += ((UINT4)inputLen >> 29);
-
-  partLen = 64 - index;
-
-  /* Transform as many times as possible.
-*/
-  if (inputLen >= partLen) {
- MD5_memcpy
-   ((POINTER)&context->buffer[index], (POINTER)input, partLen);
- MD5Transform (context->state, context->buffer);
-
- for (i = partLen; i + 63 < inputLen; i += 64)
-   MD5Transform (context->state, &input[i]);
-
- index = 0;
-  }
-  else
- i = 0;
-
-  /* Buffer remaining input */
-  MD5_memcpy
- ((POINTER)&context->buffer[index], (POINTER)&input[i],
-  inputLen-i);
-}
-
-/* MD5 finalization. Ends an MD5 message-digest operation, writing the
-  the message digest and zeroizing the context.
- */
-void MD5Final (digest, context)
-unsigned char digest[16];                         /* message digest */
-MD5_CTX *context;                                       /* context */
-{
-  unsigned char bits[8];
-  unsigned int index, padLen;
-
-  /* Save number of bits */
-  Encode (bits, context->count, 8);
-
-  /* Pad out to 56 mod 64.
-*/
-  index = (unsigned int)((context->count[0] >> 3) & 0x3f);
-  padLen = (index < 56) ? (56 - index) : (120 - index);
-  MD5Update (context, PADDING, padLen);
-
-  /* Append length (before padding) */
-  MD5Update (context, bits, 8);
-
-  if (digest != NULL)			/* Bill Simpson's padding */
-  {
-	  /* store state in digest */
-	  Encode (digest, context->state, 16);
-
-	  /* Zeroize sensitive information.
-	   */
-	  MD5_memset ((POINTER)context, 0, sizeof (*context));
-  }
-}
-
-/* MD5 basic transformation. Transforms state based on block.
- */
-static void MD5Transform (state, block)
-UINT4 state[4];
-unsigned char block[64];
-{
-  UINT4 a = state[0], b = state[1], c = state[2], d = state[3], x[16];
-
-  Decode (x, block, 64);
-
-  /* Round 1 */
-  FF (a, b, c, d, x[ 0], S11, 0xd76aa478); /* 1 */
-  FF (d, a, b, c, x[ 1], S12, 0xe8c7b756); /* 2 */
-  FF (c, d, a, b, x[ 2], S13, 0x242070db); /* 3 */
-  FF (b, c, d, a, x[ 3], S14, 0xc1bdceee); /* 4 */
-  FF (a, b, c, d, x[ 4], S11, 0xf57c0faf); /* 5 */
-  FF (d, a, b, c, x[ 5], S12, 0x4787c62a); /* 6 */
-  FF (c, d, a, b, x[ 6], S13, 0xa8304613); /* 7 */
-  FF (b, c, d, a, x[ 7], S14, 0xfd469501); /* 8 */
-  FF (a, b, c, d, x[ 8], S11, 0x698098d8); /* 9 */
-  FF (d, a, b, c, x[ 9], S12, 0x8b44f7af); /* 10 */
-  FF (c, d, a, b, x[10], S13, 0xffff5bb1); /* 11 */
-  FF (b, c, d, a, x[11], S14, 0x895cd7be); /* 12 */
-  FF (a, b, c, d, x[12], S11, 0x6b901122); /* 13 */
-  FF (d, a, b, c, x[13], S12, 0xfd987193); /* 14 */
-  FF (c, d, a, b, x[14], S13, 0xa679438e); /* 15 */
-  FF (b, c, d, a, x[15], S14, 0x49b40821); /* 16 */
-
- /* Round 2 */
-  GG (a, b, c, d, x[ 1], S21, 0xf61e2562); /* 17 */
-  GG (d, a, b, c, x[ 6], S22, 0xc040b340); /* 18 */
-  GG (c, d, a, b, x[11], S23, 0x265e5a51); /* 19 */
-  GG (b, c, d, a, x[ 0], S24, 0xe9b6c7aa); /* 20 */
-  GG (a, b, c, d, x[ 5], S21, 0xd62f105d); /* 21 */
-  GG (d, a, b, c, x[10], S22,  0x2441453); /* 22 */
-  GG (c, d, a, b, x[15], S23, 0xd8a1e681); /* 23 */
-  GG (b, c, d, a, x[ 4], S24, 0xe7d3fbc8); /* 24 */
-  GG (a, b, c, d, x[ 9], S21, 0x21e1cde6); /* 25 */
-  GG (d, a, b, c, x[14], S22, 0xc33707d6); /* 26 */
-  GG (c, d, a, b, x[ 3], S23, 0xf4d50d87); /* 27 */
-  GG (b, c, d, a, x[ 8], S24, 0x455a14ed); /* 28 */
-  GG (a, b, c, d, x[13], S21, 0xa9e3e905); /* 29 */
-  GG (d, a, b, c, x[ 2], S22, 0xfcefa3f8); /* 30 */
-  GG (c, d, a, b, x[ 7], S23, 0x676f02d9); /* 31 */
-  GG (b, c, d, a, x[12], S24, 0x8d2a4c8a); /* 32 */
-
-  /* Round 3 */
-  HH (a, b, c, d, x[ 5], S31, 0xfffa3942); /* 33 */
-  HH (d, a, b, c, x[ 8], S32, 0x8771f681); /* 34 */
-  HH (c, d, a, b, x[11], S33, 0x6d9d6122); /* 35 */
-  HH (b, c, d, a, x[14], S34, 0xfde5380c); /* 36 */
-  HH (a, b, c, d, x[ 1], S31, 0xa4beea44); /* 37 */
-  HH (d, a, b, c, x[ 4], S32, 0x4bdecfa9); /* 38 */
-  HH (c, d, a, b, x[ 7], S33, 0xf6bb4b60); /* 39 */
-  HH (b, c, d, a, x[10], S34, 0xbebfbc70); /* 40 */
-  HH (a, b, c, d, x[13], S31, 0x289b7ec6); /* 41 */
-  HH (d, a, b, c, x[ 0], S32, 0xeaa127fa); /* 42 */
-  HH (c, d, a, b, x[ 3], S33, 0xd4ef3085); /* 43 */
-  HH (b, c, d, a, x[ 6], S34,  0x4881d05); /* 44 */
-  HH (a, b, c, d, x[ 9], S31, 0xd9d4d039); /* 45 */
-  HH (d, a, b, c, x[12], S32, 0xe6db99e5); /* 46 */
-  HH (c, d, a, b, x[15], S33, 0x1fa27cf8); /* 47 */
-  HH (b, c, d, a, x[ 2], S34, 0xc4ac5665); /* 48 */
-
-  /* Round 4 */
-  II (a, b, c, d, x[ 0], S41, 0xf4292244); /* 49 */
-  II (d, a, b, c, x[ 7], S42, 0x432aff97); /* 50 */
-  II (c, d, a, b, x[14], S43, 0xab9423a7); /* 51 */
-  II (b, c, d, a, x[ 5], S44, 0xfc93a039); /* 52 */
-  II (a, b, c, d, x[12], S41, 0x655b59c3); /* 53 */
-  II (d, a, b, c, x[ 3], S42, 0x8f0ccc92); /* 54 */
-  II (c, d, a, b, x[10], S43, 0xffeff47d); /* 55 */
-  II (b, c, d, a, x[ 1], S44, 0x85845dd1); /* 56 */
-  II (a, b, c, d, x[ 8], S41, 0x6fa87e4f); /* 57 */
-  II (d, a, b, c, x[15], S42, 0xfe2ce6e0); /* 58 */
-  II (c, d, a, b, x[ 6], S43, 0xa3014314); /* 59 */
-  II (b, c, d, a, x[13], S44, 0x4e0811a1); /* 60 */
-  II (a, b, c, d, x[ 4], S41, 0xf7537e82); /* 61 */
-  II (d, a, b, c, x[11], S42, 0xbd3af235); /* 62 */
-  II (c, d, a, b, x[ 2], S43, 0x2ad7d2bb); /* 63 */
-  II (b, c, d, a, x[ 9], S44, 0xeb86d391); /* 64 */
-
-  state[0] += a;
-  state[1] += b;
-  state[2] += c;
-  state[3] += d;
-
-  /* Zeroize sensitive information.
-*/
-  MD5_memset ((POINTER)x, 0, sizeof (x));
-}
-
-#if BYTE_ORDER != LITTLE_ENDIAN
-
-/* Encodes input (UINT4) into output (unsigned char). Assumes len is
-  a multiple of 4.
- */
-static void Encode (output, input, len)
-unsigned char *output;
-UINT4 *input;
-unsigned int len;
-{
-  unsigned int i, j;
-
-  for (i = 0, j = 0; j < len; i++, j += 4) {
- output[j] = (unsigned char)(input[i] & 0xff);
- output[j+1] = (unsigned char)((input[i] >> 8) & 0xff);
- output[j+2] = (unsigned char)((input[i] >> 16) & 0xff);
- output[j+3] = (unsigned char)((input[i] >> 24) & 0xff);
-  }
-}
-
-/* Decodes input (unsigned char) into output (UINT4). Assumes len is
-  a multiple of 4.
- */
-static void Decode (output, input, len)
-UINT4 *output;
-unsigned char *input;
-unsigned int len;
-{
-  unsigned int i, j;
-
-  for (i = 0, j = 0; j < len; i++, j += 4)
- output[i] = ((UINT4)input[j]) | (((UINT4)input[j+1]) << 8) |
-   (((UINT4)input[j+2]) << 16) | (((UINT4)input[j+3]) << 24);
-}
-
-#endif
-
-#ifndef HAVEMEMCOPY
-#ifndef HAVEBCOPY
-/* Note: Replace "for loop" with standard memcpy if possible.
- */
-
-static void MD5_memcpy (output, input, len)
-POINTER output;
-POINTER input;
-unsigned int len;
-{
-  unsigned int i;
-
-  for (i = 0; i < len; i++)
-
- output[i] = input[i];
-}
-
-/* Note: Replace "for loop" with standard memset if possible.
- */
-static void MD5_memset (output, value, len)
-POINTER output;
-int value;
-unsigned int len;
-{
-  unsigned int i;
-
-  for (i = 0; i < len; i++)
- ((char *)output)[i] = (char)value;
-}
-#endif
-#endif
-	
diff --git a/sys/sys/md5k.h b/sys/sys/md5k.h
new file mode 100644
index 00000000000..000d8dae79e
--- /dev/null
+++ b/sys/sys/md5k.h
@@ -0,0 +1,54 @@
+/*	$OpenBSD: md5k.h,v 1.1 1997/03/30 22:05:08 mickey Exp $	*/
+
+/* GLOBAL.H - RSAREF types and constants
+ */
+
+/* POINTER defines a generic pointer type */
+typedef unsigned char *POINTER;
+
+/* UINT2 defines a two byte word */
+typedef unsigned short int UINT2;
+
+/* UINT4 defines a four byte word */
+typedef unsigned long int UINT4;
+
+/* MD5.H - header file for MD5C.C
+ */
+
+/* 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.
+ */
+
+/* MD5 context. */
+typedef struct {
+  UINT4 state[4];                                   /* state (ABCD) */
+  UINT4 count[2];        /* number of bits, modulo 2^64 (lsb first) */
+  u_int8_t buffer[64];                              /* input buffer */
+} MD5_CTX;
+
+#include <sys/cdefs.h>
+
+void MD5Init __P ((MD5_CTX *));
+void MD5Update __P
+  ((MD5_CTX *, unsigned char *, unsigned int));
+void MD5Final __P ((unsigned char [16], MD5_CTX *));
+
+#define _MD5_H_