arc4.c (0898782247ae533d1f4e47a06bc5d4870931b284) arc4.c (9ace6771831017ce75a2bdf03c284b686dd39dba)
1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Cryptographic API
4 *
5 * ARC4 Cipher Algorithm
6 *
7 * Jon Oberheide <jon@oberheide.org>
8 */
9
10#include <crypto/algapi.h>
11#include <crypto/arc4.h>
12#include <crypto/internal/skcipher.h>
13#include <linux/init.h>
1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Cryptographic API
4 *
5 * ARC4 Cipher Algorithm
6 *
7 * Jon Oberheide <jon@oberheide.org>
8 */
9
10#include <crypto/algapi.h>
11#include <crypto/arc4.h>
12#include <crypto/internal/skcipher.h>
13#include <linux/init.h>
14#include <linux/kernel.h>
14#include <linux/module.h>
15#include <linux/module.h>
16#include <linux/sched.h>
15
16static int crypto_arc4_setkey(struct crypto_skcipher *tfm, const u8 *in_key,
17 unsigned int key_len)
18{
19 struct arc4_ctx *ctx = crypto_skcipher_ctx(tfm);
20
21 return arc4_setkey(ctx, in_key, key_len);
22}

--- 11 unchanged lines hidden (view full) ---

34 arc4_crypt(ctx, walk.dst.virt.addr, walk.src.virt.addr,
35 walk.nbytes);
36 err = skcipher_walk_done(&walk, 0);
37 }
38
39 return err;
40}
41
17
18static int crypto_arc4_setkey(struct crypto_skcipher *tfm, const u8 *in_key,
19 unsigned int key_len)
20{
21 struct arc4_ctx *ctx = crypto_skcipher_ctx(tfm);
22
23 return arc4_setkey(ctx, in_key, key_len);
24}

--- 11 unchanged lines hidden (view full) ---

36 arc4_crypt(ctx, walk.dst.virt.addr, walk.src.virt.addr,
37 walk.nbytes);
38 err = skcipher_walk_done(&walk, 0);
39 }
40
41 return err;
42}
43
44static int crypto_arc4_init(struct crypto_skcipher *tfm)
45{
46 pr_warn_ratelimited("\"%s\" (%ld) uses obsolete ecb(arc4) skcipher\n",
47 current->comm, (unsigned long)current->pid);
48
49 return 0;
50}
51
42static struct skcipher_alg arc4_alg = {
43 /*
44 * For legacy reasons, this is named "ecb(arc4)", not "arc4".
45 * Nevertheless it's actually a stream cipher, not a block cipher.
46 */
47 .base.cra_name = "ecb(arc4)",
48 .base.cra_driver_name = "ecb(arc4)-generic",
49 .base.cra_priority = 100,
50 .base.cra_blocksize = ARC4_BLOCK_SIZE,
51 .base.cra_ctxsize = sizeof(struct arc4_ctx),
52 .base.cra_module = THIS_MODULE,
53 .min_keysize = ARC4_MIN_KEY_SIZE,
54 .max_keysize = ARC4_MAX_KEY_SIZE,
55 .setkey = crypto_arc4_setkey,
56 .encrypt = crypto_arc4_crypt,
57 .decrypt = crypto_arc4_crypt,
52static struct skcipher_alg arc4_alg = {
53 /*
54 * For legacy reasons, this is named "ecb(arc4)", not "arc4".
55 * Nevertheless it's actually a stream cipher, not a block cipher.
56 */
57 .base.cra_name = "ecb(arc4)",
58 .base.cra_driver_name = "ecb(arc4)-generic",
59 .base.cra_priority = 100,
60 .base.cra_blocksize = ARC4_BLOCK_SIZE,
61 .base.cra_ctxsize = sizeof(struct arc4_ctx),
62 .base.cra_module = THIS_MODULE,
63 .min_keysize = ARC4_MIN_KEY_SIZE,
64 .max_keysize = ARC4_MAX_KEY_SIZE,
65 .setkey = crypto_arc4_setkey,
66 .encrypt = crypto_arc4_crypt,
67 .decrypt = crypto_arc4_crypt,
68 .init = crypto_arc4_init,
58};
59
60static int __init arc4_init(void)
61{
62 return crypto_register_skcipher(&arc4_alg);
63}
64
65static void __exit arc4_exit(void)
66{
67 crypto_unregister_skcipher(&arc4_alg);
68}
69
70subsys_initcall(arc4_init);
71module_exit(arc4_exit);
72
73MODULE_LICENSE("GPL");
74MODULE_DESCRIPTION("ARC4 Cipher Algorithm");
75MODULE_AUTHOR("Jon Oberheide <jon@oberheide.org>");
76MODULE_ALIAS_CRYPTO("ecb(arc4)");
69};
70
71static int __init arc4_init(void)
72{
73 return crypto_register_skcipher(&arc4_alg);
74}
75
76static void __exit arc4_exit(void)
77{
78 crypto_unregister_skcipher(&arc4_alg);
79}
80
81subsys_initcall(arc4_init);
82module_exit(arc4_exit);
83
84MODULE_LICENSE("GPL");
85MODULE_DESCRIPTION("ARC4 Cipher Algorithm");
86MODULE_AUTHOR("Jon Oberheide <jon@oberheide.org>");
87MODULE_ALIAS_CRYPTO("ecb(arc4)");