1/*	$OpenBSD: xform.c,v 1.16 2001/08/28 12:20:43 ben Exp $	*/
2/*-
3 * The authors of this code are John Ioannidis (ji@tla.org),
4 * Angelos D. Keromytis (kermit@csd.uch.gr),
5 * Niels Provos (provos@physnet.uni-hamburg.de) and
6 * Damien Miller (djm@mindrot.org).
7 *
8 * This code was written by John Ioannidis for BSD/OS in Athens, Greece,
9 * in November 1995.
10 *
11 * Ported to OpenBSD and NetBSD, with additional transforms, in December 1996,
12 * by Angelos D. Keromytis.
13 *
14 * Additional transforms and features in 1997 and 1998 by Angelos D. Keromytis
15 * and Niels Provos.
16 *
17 * Additional features in 1999 by Angelos D. Keromytis.
18 *
19 * AES XTS implementation in 2008 by Damien Miller
20 *
21 * Copyright (C) 1995, 1996, 1997, 1998, 1999 by John Ioannidis,
22 * Angelos D. Keromytis and Niels Provos.
23 *
24 * Copyright (C) 2001, Angelos D. Keromytis.
25 *
26 * Copyright (C) 2008, Damien Miller
27 * Copyright (c) 2014 The FreeBSD Foundation
28 * All rights reserved.
29 *
30 * Portions of this software were developed by John-Mark Gurney
31 * under sponsorship of the FreeBSD Foundation and
32 * Rubicon Communications, LLC (Netgate).
33 *
34 * Permission to use, copy, and modify this software with or without fee
35 * is hereby granted, provided that this entire notice is included in
36 * all copies of any software which is or includes a copy or
37 * modification of this software.
38 * You may use this code under the GNU public license if you so wish. Please
39 * contribute changes back to the authors under this freer than GPL license
40 * so that we may further the use of strong encryption without limitations to
41 * all.
42 *
43 * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR
44 * IMPLIED WARRANTY. IN PARTICULAR, NONE OF THE AUTHORS MAKES ANY
45 * REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE
46 * MERCHANTABILITY OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR
47 * PURPOSE.
48 */
49
50#include <sys/cdefs.h>
51__FBSDID("$FreeBSD$");
52
53#include <opencrypto/deflate.h>
54#include <opencrypto/xform_comp.h>
55
56static	u_int32_t deflate_compress(u_int8_t *, u_int32_t, u_int8_t **);
57static	u_int32_t deflate_decompress(u_int8_t *, u_int32_t, u_int8_t **);
58
59/* Compression instance */
60struct comp_algo comp_algo_deflate = {
61	CRYPTO_DEFLATE_COMP, "Deflate",
62	90, deflate_compress,
63	deflate_decompress
64};
65
66/*
67 * And compression
68 */
69
70static u_int32_t
71deflate_compress(data, size, out)
72	u_int8_t *data;
73	u_int32_t size;
74	u_int8_t **out;
75{
76	return deflate_global(data, size, 0, out);
77}
78
79static u_int32_t
80deflate_decompress(data, size, out)
81	u_int8_t *data;
82	u_int32_t size;
83	u_int8_t **out;
84{
85	return deflate_global(data, size, 1, out);
86}
87