From a6991cae5247d6e8ab5da29d67db0dda3b60a5c4 Mon Sep 17 00:00:00 2001
From: Peter Avalos <pavalos@dragonflybsd.org>
Date: Sun, 14 Nov 2010 10:32:22 -1000
Subject: [PATCH] Remove unused file from OpenSSH source.

---
 .../openssh/openbsd-compat/bsd-arc4random.c   | 150 ------------------
 1 file changed, 150 deletions(-)
 delete mode 100644 crypto/openssh/openbsd-compat/bsd-arc4random.c

diff --git a/crypto/openssh/openbsd-compat/bsd-arc4random.c b/crypto/openssh/openbsd-compat/bsd-arc4random.c
deleted file mode 100644
index 9d4c8690eb..0000000000
--- a/crypto/openssh/openbsd-compat/bsd-arc4random.c
+++ /dev/null
@@ -1,150 +0,0 @@
-/*
- * Copyright (c) 1999,2000,2004 Damien Miller <djm@mindrot.org>
- *
- * Permission to use, copy, modify, and distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
- * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-
-#include "includes.h"
-
-#include <sys/types.h>
-
-#include <string.h>
-#include <stdlib.h>
-#include <stdarg.h>
-
-#include "log.h"
-
-#ifndef HAVE_ARC4RANDOM
-
-#include <openssl/rand.h>
-#include <openssl/rc4.h>
-#include <openssl/err.h>
-
-/* Size of key to use */
-#define SEED_SIZE 20
-
-/* Number of bytes to reseed after */
-#define REKEY_BYTES	(1 << 24)
-
-static int rc4_ready = 0;
-static RC4_KEY rc4;
-
-unsigned int
-arc4random(void)
-{
-	unsigned int r = 0;
-	static int first_time = 1;
-
-	if (rc4_ready <= 0) {
-		if (first_time)
-			seed_rng();
-		first_time = 0;
-		arc4random_stir();
-	}
-
-	RC4(&rc4, sizeof(r), (unsigned char *)&r, (unsigned char *)&r);
-
-	rc4_ready -= sizeof(r);
-	
-	return(r);
-}
-
-void
-arc4random_stir(void)
-{
-	unsigned char rand_buf[SEED_SIZE];
-	int i;
-
-	memset(&rc4, 0, sizeof(rc4));
-	if (RAND_bytes(rand_buf, sizeof(rand_buf)) <= 0)
-		fatal("Couldn't obtain random bytes (error %ld)",
-		    ERR_get_error());
-	RC4_set_key(&rc4, sizeof(rand_buf), rand_buf);
-
-	/*
-	 * Discard early keystream, as per recommendations in:
-	 * http://www.wisdom.weizmann.ac.il/~itsik/RC4/Papers/Rc4_ksa.ps
-	 */
-	for(i = 0; i <= 256; i += sizeof(rand_buf))
-		RC4(&rc4, sizeof(rand_buf), rand_buf, rand_buf);
-
-	memset(rand_buf, 0, sizeof(rand_buf));
-
-	rc4_ready = REKEY_BYTES;
-}
-#endif /* !HAVE_ARC4RANDOM */
-
-#ifndef ARC4RANDOM_BUF
-void
-arc4random_buf(void *_buf, size_t n)
-{
-	size_t i;
-	u_int32_t r = 0;
-	char *buf = (char *)_buf;
-
-	for (i = 0; i < n; i++) {
-		if (i % 4 == 0)
-			r = arc4random();
-		buf[i] = r & 0xff;
-		r >>= 8;
-	}
-	i = r = 0;
-}
-#endif /* !HAVE_ARC4RANDOM_BUF */
-
-#ifndef ARC4RANDOM_UNIFORM
-/*
- * Calculate a uniformly distributed random number less than upper_bound
- * avoiding "modulo bias".
- *
- * Uniformity is achieved by generating new random numbers until the one
- * returned is outside the range [0, 2**32 % upper_bound).  This
- * guarantees the selected random number will be inside
- * [2**32 % upper_bound, 2**32) which maps back to [0, upper_bound)
- * after reduction modulo upper_bound.
- */
-u_int32_t
-arc4random_uniform(u_int32_t upper_bound)
-{
-	u_int32_t r, min;
-
-	if (upper_bound < 2)
-		return 0;
-
-#if (ULONG_MAX > 0xffffffffUL)
-	min = 0x100000000UL % upper_bound;
-#else
-	/* Calculate (2**32 % upper_bound) avoiding 64-bit math */
-	if (upper_bound > 0x80000000)
-		min = 1 + ~upper_bound;		/* 2**32 - upper_bound */
-	else {
-		/* (2**32 - (x * 2)) % x == 2**32 % x when x <= 2**31 */
-		min = ((0xffffffff - (upper_bound * 2)) + 1) % upper_bound;
-	}
-#endif
-
-	/*
-	 * This could theoretically loop forever but each retry has
-	 * p > 0.5 (worst case, usually far better) of selecting a
-	 * number inside the range we need, so it should rarely need
-	 * to re-roll.
-	 */
-	for (;;) {
-		r = arc4random();
-		if (r >= min)
-			break;
-	}
-
-	return r % upper_bound;
-}
-#endif /* !HAVE_ARC4RANDOM_UNIFORM */
-- 
2.41.0