1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * BLAKE2s digest algorithm, ARM scalar implementation
4 *
5 * Copyright 2020 Google LLC
6 */
7
8 #include <crypto/internal/blake2s.h>
9 #include <crypto/internal/hash.h>
10
11 #include <linux/module.h>
12
crypto_blake2s_update_arm(struct shash_desc * desc,const u8 * in,unsigned int inlen)13 static int crypto_blake2s_update_arm(struct shash_desc *desc,
14 const u8 *in, unsigned int inlen)
15 {
16 return crypto_blake2s_update(desc, in, inlen, false);
17 }
18
crypto_blake2s_final_arm(struct shash_desc * desc,u8 * out)19 static int crypto_blake2s_final_arm(struct shash_desc *desc, u8 *out)
20 {
21 return crypto_blake2s_final(desc, out, false);
22 }
23
24 #define BLAKE2S_ALG(name, driver_name, digest_size) \
25 { \
26 .base.cra_name = name, \
27 .base.cra_driver_name = driver_name, \
28 .base.cra_priority = 200, \
29 .base.cra_flags = CRYPTO_ALG_OPTIONAL_KEY, \
30 .base.cra_blocksize = BLAKE2S_BLOCK_SIZE, \
31 .base.cra_ctxsize = sizeof(struct blake2s_tfm_ctx), \
32 .base.cra_module = THIS_MODULE, \
33 .digestsize = digest_size, \
34 .setkey = crypto_blake2s_setkey, \
35 .init = crypto_blake2s_init, \
36 .update = crypto_blake2s_update_arm, \
37 .final = crypto_blake2s_final_arm, \
38 .descsize = sizeof(struct blake2s_state), \
39 }
40
41 static struct shash_alg blake2s_arm_algs[] = {
42 BLAKE2S_ALG("blake2s-128", "blake2s-128-arm", BLAKE2S_128_HASH_SIZE),
43 BLAKE2S_ALG("blake2s-160", "blake2s-160-arm", BLAKE2S_160_HASH_SIZE),
44 BLAKE2S_ALG("blake2s-224", "blake2s-224-arm", BLAKE2S_224_HASH_SIZE),
45 BLAKE2S_ALG("blake2s-256", "blake2s-256-arm", BLAKE2S_256_HASH_SIZE),
46 };
47
blake2s_arm_mod_init(void)48 static int __init blake2s_arm_mod_init(void)
49 {
50 return IS_REACHABLE(CONFIG_CRYPTO_HASH) ?
51 crypto_register_shashes(blake2s_arm_algs,
52 ARRAY_SIZE(blake2s_arm_algs)) : 0;
53 }
54
blake2s_arm_mod_exit(void)55 static void __exit blake2s_arm_mod_exit(void)
56 {
57 if (IS_REACHABLE(CONFIG_CRYPTO_HASH))
58 crypto_unregister_shashes(blake2s_arm_algs,
59 ARRAY_SIZE(blake2s_arm_algs));
60 }
61
62 module_init(blake2s_arm_mod_init);
63 module_exit(blake2s_arm_mod_exit);
64
65 MODULE_DESCRIPTION("BLAKE2s digest algorithm, ARM scalar implementation");
66 MODULE_LICENSE("GPL");
67 MODULE_AUTHOR("Eric Biggers <ebiggers@google.com>");
68 MODULE_ALIAS_CRYPTO("blake2s-128");
69 MODULE_ALIAS_CRYPTO("blake2s-128-arm");
70 MODULE_ALIAS_CRYPTO("blake2s-160");
71 MODULE_ALIAS_CRYPTO("blake2s-160-arm");
72 MODULE_ALIAS_CRYPTO("blake2s-224");
73 MODULE_ALIAS_CRYPTO("blake2s-224-arm");
74 MODULE_ALIAS_CRYPTO("blake2s-256");
75 MODULE_ALIAS_CRYPTO("blake2s-256-arm");
76