1 // SPDX-License-Identifier: GPL-2.0-only 1
2 /*
3 * Scalar AES core transform
4 *
5 * Copyright (C) 2017 Linaro Ltd.
6 * Author: Ard Biesheuvel <ard.biesheuvel@lina
7 */
8
9 #include <crypto/aes.h>
10 #include <crypto/algapi.h>
11 #include <linux/module.h>
12 #include "aes-cipher.h"
13
14 EXPORT_SYMBOL_GPL(__aes_arm_encrypt);
15 EXPORT_SYMBOL_GPL(__aes_arm_decrypt);
16
17 static void aes_arm_encrypt(struct crypto_tfm
18 {
19 struct crypto_aes_ctx *ctx = crypto_tf
20 int rounds = 6 + ctx->key_length / 4;
21
22 __aes_arm_encrypt(ctx->key_enc, rounds
23 }
24
25 static void aes_arm_decrypt(struct crypto_tfm
26 {
27 struct crypto_aes_ctx *ctx = crypto_tf
28 int rounds = 6 + ctx->key_length / 4;
29
30 __aes_arm_decrypt(ctx->key_dec, rounds
31 }
32
33 static struct crypto_alg aes_alg = {
34 .cra_name = "aes
35 .cra_driver_name = "aes
36 .cra_priority = 200,
37 .cra_flags = CRYP
38 .cra_blocksize = AES_
39 .cra_ctxsize = size
40 .cra_module = THIS
41
42 .cra_cipher.cia_min_keysize = AES_
43 .cra_cipher.cia_max_keysize = AES_
44 .cra_cipher.cia_setkey = cryp
45 .cra_cipher.cia_encrypt = aes_
46 .cra_cipher.cia_decrypt = aes_
47
48 #ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
49 .cra_alignmask = 3,
50 #endif
51 };
52
53 static int __init aes_init(void)
54 {
55 return crypto_register_alg(&aes_alg);
56 }
57
58 static void __exit aes_fini(void)
59 {
60 crypto_unregister_alg(&aes_alg);
61 }
62
63 module_init(aes_init);
64 module_exit(aes_fini);
65
66 MODULE_DESCRIPTION("Scalar AES cipher for ARM"
67 MODULE_AUTHOR("Ard Biesheuvel <ard.biesheuvel@
68 MODULE_LICENSE("GPL v2");
69 MODULE_ALIAS_CRYPTO("aes");
70
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