1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-or-later
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * BLAKE2s digest algorithm, ARM scalar implementation
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * Copyright 2020 Google LLC
6*4882a593Smuzhiyun */
7*4882a593Smuzhiyun
8*4882a593Smuzhiyun #include <crypto/internal/blake2s.h>
9*4882a593Smuzhiyun #include <crypto/internal/hash.h>
10*4882a593Smuzhiyun
11*4882a593Smuzhiyun #include <linux/module.h>
12*4882a593Smuzhiyun
crypto_blake2s_update_arm(struct shash_desc * desc,const u8 * in,unsigned int inlen)13*4882a593Smuzhiyun static int crypto_blake2s_update_arm(struct shash_desc *desc,
14*4882a593Smuzhiyun const u8 *in, unsigned int inlen)
15*4882a593Smuzhiyun {
16*4882a593Smuzhiyun return crypto_blake2s_update(desc, in, inlen, false);
17*4882a593Smuzhiyun }
18*4882a593Smuzhiyun
crypto_blake2s_final_arm(struct shash_desc * desc,u8 * out)19*4882a593Smuzhiyun static int crypto_blake2s_final_arm(struct shash_desc *desc, u8 *out)
20*4882a593Smuzhiyun {
21*4882a593Smuzhiyun return crypto_blake2s_final(desc, out, false);
22*4882a593Smuzhiyun }
23*4882a593Smuzhiyun
24*4882a593Smuzhiyun #define BLAKE2S_ALG(name, driver_name, digest_size) \
25*4882a593Smuzhiyun { \
26*4882a593Smuzhiyun .base.cra_name = name, \
27*4882a593Smuzhiyun .base.cra_driver_name = driver_name, \
28*4882a593Smuzhiyun .base.cra_priority = 200, \
29*4882a593Smuzhiyun .base.cra_flags = CRYPTO_ALG_OPTIONAL_KEY, \
30*4882a593Smuzhiyun .base.cra_blocksize = BLAKE2S_BLOCK_SIZE, \
31*4882a593Smuzhiyun .base.cra_ctxsize = sizeof(struct blake2s_tfm_ctx), \
32*4882a593Smuzhiyun .base.cra_module = THIS_MODULE, \
33*4882a593Smuzhiyun .digestsize = digest_size, \
34*4882a593Smuzhiyun .setkey = crypto_blake2s_setkey, \
35*4882a593Smuzhiyun .init = crypto_blake2s_init, \
36*4882a593Smuzhiyun .update = crypto_blake2s_update_arm, \
37*4882a593Smuzhiyun .final = crypto_blake2s_final_arm, \
38*4882a593Smuzhiyun .descsize = sizeof(struct blake2s_state), \
39*4882a593Smuzhiyun }
40*4882a593Smuzhiyun
41*4882a593Smuzhiyun static struct shash_alg blake2s_arm_algs[] = {
42*4882a593Smuzhiyun BLAKE2S_ALG("blake2s-128", "blake2s-128-arm", BLAKE2S_128_HASH_SIZE),
43*4882a593Smuzhiyun BLAKE2S_ALG("blake2s-160", "blake2s-160-arm", BLAKE2S_160_HASH_SIZE),
44*4882a593Smuzhiyun BLAKE2S_ALG("blake2s-224", "blake2s-224-arm", BLAKE2S_224_HASH_SIZE),
45*4882a593Smuzhiyun BLAKE2S_ALG("blake2s-256", "blake2s-256-arm", BLAKE2S_256_HASH_SIZE),
46*4882a593Smuzhiyun };
47*4882a593Smuzhiyun
blake2s_arm_mod_init(void)48*4882a593Smuzhiyun static int __init blake2s_arm_mod_init(void)
49*4882a593Smuzhiyun {
50*4882a593Smuzhiyun return IS_REACHABLE(CONFIG_CRYPTO_HASH) ?
51*4882a593Smuzhiyun crypto_register_shashes(blake2s_arm_algs,
52*4882a593Smuzhiyun ARRAY_SIZE(blake2s_arm_algs)) : 0;
53*4882a593Smuzhiyun }
54*4882a593Smuzhiyun
blake2s_arm_mod_exit(void)55*4882a593Smuzhiyun static void __exit blake2s_arm_mod_exit(void)
56*4882a593Smuzhiyun {
57*4882a593Smuzhiyun if (IS_REACHABLE(CONFIG_CRYPTO_HASH))
58*4882a593Smuzhiyun crypto_unregister_shashes(blake2s_arm_algs,
59*4882a593Smuzhiyun ARRAY_SIZE(blake2s_arm_algs));
60*4882a593Smuzhiyun }
61*4882a593Smuzhiyun
62*4882a593Smuzhiyun module_init(blake2s_arm_mod_init);
63*4882a593Smuzhiyun module_exit(blake2s_arm_mod_exit);
64*4882a593Smuzhiyun
65*4882a593Smuzhiyun MODULE_DESCRIPTION("BLAKE2s digest algorithm, ARM scalar implementation");
66*4882a593Smuzhiyun MODULE_LICENSE("GPL");
67*4882a593Smuzhiyun MODULE_AUTHOR("Eric Biggers <ebiggers@google.com>");
68*4882a593Smuzhiyun MODULE_ALIAS_CRYPTO("blake2s-128");
69*4882a593Smuzhiyun MODULE_ALIAS_CRYPTO("blake2s-128-arm");
70*4882a593Smuzhiyun MODULE_ALIAS_CRYPTO("blake2s-160");
71*4882a593Smuzhiyun MODULE_ALIAS_CRYPTO("blake2s-160-arm");
72*4882a593Smuzhiyun MODULE_ALIAS_CRYPTO("blake2s-224");
73*4882a593Smuzhiyun MODULE_ALIAS_CRYPTO("blake2s-224-arm");
74*4882a593Smuzhiyun MODULE_ALIAS_CRYPTO("blake2s-256");
75*4882a593Smuzhiyun MODULE_ALIAS_CRYPTO("blake2s-256-arm");
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