Blame view
crypto/arc4.c
1.81 KB
2874c5fd2 treewide: Replace... |
1 |
// SPDX-License-Identifier: GPL-2.0-or-later |
cfa2b54ec crypto: arc4 - Fi... |
2 |
/* |
1da177e4c Linux-2.6.12-rc2 |
3 4 5 6 7 |
* Cryptographic API * * ARC4 Cipher Algorithm * * Jon Oberheide <jon@oberheide.org> |
1da177e4c Linux-2.6.12-rc2 |
8 |
*/ |
ce6dd3689 crypto: arc4 - im... |
9 |
|
ce6dd3689 crypto: arc4 - im... |
10 |
#include <crypto/algapi.h> |
bd30cf533 crypto: export ar... |
11 |
#include <crypto/arc4.h> |
426bcb508 crypto: arc4 - co... |
12 13 14 |
#include <crypto/internal/skcipher.h> #include <linux/init.h> #include <linux/module.h> |
1da177e4c Linux-2.6.12-rc2 |
15 |
|
611a23c2d crypto: arc4 - re... |
16 17 |
static int crypto_arc4_setkey(struct crypto_skcipher *tfm, const u8 *in_key, unsigned int key_len) |
426bcb508 crypto: arc4 - co... |
18 |
{ |
611a23c2d crypto: arc4 - re... |
19 |
struct arc4_ctx *ctx = crypto_skcipher_ctx(tfm); |
1da177e4c Linux-2.6.12-rc2 |
20 |
|
dc51f2575 crypto: arc4 - re... |
21 |
return arc4_setkey(ctx, in_key, key_len); |
ce6dd3689 crypto: arc4 - im... |
22 |
} |
611a23c2d crypto: arc4 - re... |
23 |
static int crypto_arc4_crypt(struct skcipher_request *req) |
ce6dd3689 crypto: arc4 - im... |
24 |
{ |
426bcb508 crypto: arc4 - co... |
25 26 27 |
struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req); struct arc4_ctx *ctx = crypto_skcipher_ctx(tfm); struct skcipher_walk walk; |
ce6dd3689 crypto: arc4 - im... |
28 |
int err; |
426bcb508 crypto: arc4 - co... |
29 |
err = skcipher_walk_virt(&walk, req, false); |
ce6dd3689 crypto: arc4 - im... |
30 31 |
while (walk.nbytes > 0) { |
426bcb508 crypto: arc4 - co... |
32 33 34 |
arc4_crypt(ctx, walk.dst.virt.addr, walk.src.virt.addr, walk.nbytes); err = skcipher_walk_done(&walk, 0); |
ce6dd3689 crypto: arc4 - im... |
35 36 37 38 |
} return err; } |
611a23c2d crypto: arc4 - re... |
39 40 41 42 43 |
static struct skcipher_alg arc4_alg = { /* * For legacy reasons, this is named "ecb(arc4)", not "arc4". * Nevertheless it's actually a stream cipher, not a block cipher. */ |
426bcb508 crypto: arc4 - co... |
44 |
.base.cra_name = "ecb(arc4)", |
d6ebf5286 crypto: make all ... |
45 |
.base.cra_driver_name = "ecb(arc4)-generic", |
426bcb508 crypto: arc4 - co... |
46 47 48 49 50 51 |
.base.cra_priority = 100, .base.cra_blocksize = ARC4_BLOCK_SIZE, .base.cra_ctxsize = sizeof(struct arc4_ctx), .base.cra_module = THIS_MODULE, .min_keysize = ARC4_MIN_KEY_SIZE, .max_keysize = ARC4_MAX_KEY_SIZE, |
611a23c2d crypto: arc4 - re... |
52 53 54 |
.setkey = crypto_arc4_setkey, .encrypt = crypto_arc4_crypt, .decrypt = crypto_arc4_crypt, |
426bcb508 crypto: arc4 - co... |
55 |
}; |
1da177e4c Linux-2.6.12-rc2 |
56 57 58 |
static int __init arc4_init(void) { |
611a23c2d crypto: arc4 - re... |
59 |
return crypto_register_skcipher(&arc4_alg); |
1da177e4c Linux-2.6.12-rc2 |
60 |
} |
1da177e4c Linux-2.6.12-rc2 |
61 62 |
static void __exit arc4_exit(void) { |
611a23c2d crypto: arc4 - re... |
63 |
crypto_unregister_skcipher(&arc4_alg); |
1da177e4c Linux-2.6.12-rc2 |
64 |
} |
c4741b230 crypto: run initc... |
65 |
subsys_initcall(arc4_init); |
1da177e4c Linux-2.6.12-rc2 |
66 67 68 69 70 |
module_exit(arc4_exit); MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("ARC4 Cipher Algorithm"); MODULE_AUTHOR("Jon Oberheide <jon@oberheide.org>"); |
611a23c2d crypto: arc4 - re... |
71 |
MODULE_ALIAS_CRYPTO("ecb(arc4)"); |