Remove support for the skipjack encryption algorithm.

This was removed from IPsec in r286100 and no longer has any in-tree
consumers.

Reviewed by:	cem
Relnotes:	yes
Sponsored by:	Chelsio Communications
Differential Revision:	https://reviews.freebsd.org/D24769

1 files changed, 0 insertions, 117 deletions

diff --git a/sys/opencrypto/xform_skipjack.c b/sys/opencrypto/xform_skipjack.c
deleted file mode 100644
index 22d74b369760..000000000000
--- a/sys/opencrypto/xform_skipjack.c
+++ /dev/null
@@ -1,117 +0,0 @@
-/*	$OpenBSD: xform.c,v 1.16 2001/08/28 12:20:43 ben Exp $	*/
-/*-
- * The authors of this code are John Ioannidis (ji@tla.org),
- * Angelos D. Keromytis (kermit@csd.uch.gr),
- * Niels Provos (provos@physnet.uni-hamburg.de) and
- * Damien Miller (djm@mindrot.org).
- *
- * This code was written by John Ioannidis for BSD/OS in Athens, Greece,
- * in November 1995.
- *
- * Ported to OpenBSD and NetBSD, with additional transforms, in December 1996,
- * by Angelos D. Keromytis.
- *
- * Additional transforms and features in 1997 and 1998 by Angelos D. Keromytis
- * and Niels Provos.
- *
- * Additional features in 1999 by Angelos D. Keromytis.
- *
- * AES XTS implementation in 2008 by Damien Miller
- *
- * Copyright (C) 1995, 1996, 1997, 1998, 1999 by John Ioannidis,
- * Angelos D. Keromytis and Niels Provos.
- *
- * Copyright (C) 2001, Angelos D. Keromytis.
- *
- * Copyright (C) 2008, Damien Miller
- * Copyright (c) 2014 The FreeBSD Foundation
- * All rights reserved.
- *
- * Portions of this software were developed by John-Mark Gurney
- * under sponsorship of the FreeBSD Foundation and
- * Rubicon Communications, LLC (Netgate).
- *
- * Permission to use, copy, and modify this software with or without fee
- * is hereby granted, provided that this entire notice is included in
- * all copies of any software which is or includes a copy or
- * modification of this software.
- * You may use this code under the GNU public license if you so wish. Please
- * contribute changes back to the authors under this freer than GPL license
- * so that we may further the use of strong encryption without limitations to
- * all.
- *
- * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR
- * IMPLIED WARRANTY. IN PARTICULAR, NONE OF THE AUTHORS MAKES ANY
- * REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE
- * MERCHANTABILITY OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR
- * PURPOSE.
- */
-
-#include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
-
-#include <opencrypto/skipjack.h>
-#include <opencrypto/xform_enc.h>
-
-static	int skipjack_setkey(u_int8_t **, const u_int8_t *, int);
-static	void skipjack_encrypt(caddr_t, u_int8_t *);
-static	void skipjack_decrypt(caddr_t, u_int8_t *);
-static	void skipjack_zerokey(u_int8_t **);
-
-/* Encryption instances */
-struct enc_xform enc_xform_skipjack = {
-	CRYPTO_SKIPJACK_CBC, "Skipjack",
-	SKIPJACK_BLOCK_LEN, SKIPJACK_BLOCK_LEN, SKIPJACK_MIN_KEY,
-	SKIPJACK_MAX_KEY,
-	skipjack_encrypt,
-	skipjack_decrypt, skipjack_setkey,
-	skipjack_zerokey,
-	NULL,
-};
-
-/*
- * Encryption wrapper routines.
- */
-static void
-skipjack_encrypt(caddr_t key, u_int8_t *blk)
-{
-	skipjack_forwards(blk, blk, (u_int8_t **) key);
-}
-
-static void
-skipjack_decrypt(caddr_t key, u_int8_t *blk)
-{
-	skipjack_backwards(blk, blk, (u_int8_t **) key);
-}
-
-static int
-skipjack_setkey(u_int8_t **sched, const u_int8_t *key, int len)
-{
-	int err;
-
-	/* NB: allocate all the memory that's needed at once */
-	*sched = KMALLOC(10 * (sizeof(u_int8_t *) + 0x100),
-		M_CRYPTO_DATA, M_NOWAIT|M_ZERO);
-	if (*sched != NULL) {
-		u_int8_t** key_tables = (u_int8_t**) *sched;
-		u_int8_t* table = (u_int8_t*) &key_tables[10];
-		int k;
-
-		for (k = 0; k < 10; k++) {
-			key_tables[k] = table;
-			table += 0x100;
-		}
-		subkey_table_gen(key, (u_int8_t **) *sched);
-		err = 0;
-	} else
-		err = ENOMEM;
-	return err;
-}
-
-static void
-skipjack_zerokey(u_int8_t **sched)
-{
-	bzero(*sched, 10 * (sizeof(u_int8_t *) + 0x100));
-	KFREE(*sched, M_CRYPTO_DATA);
-	*sched = NULL;
-}