1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * sm3-neon-glue.c - SM3 secure hash using NEON instructions
5 * Copyright (C) 2022 Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
10 #include <asm/unaligned.h>
11 #include <crypto/internal/hash.h>
12 #include <crypto/internal/simd.h>
13 #include <crypto/sm3.h>
14 #include <crypto/sm3_base.h>
15 #include <linux/cpufeature.h>
16 #include <linux/crypto.h>
17 #include <linux/module.h>
20 asmlinkage void sm3_neon_transform(struct sm3_state *sst, u8 const *src,
23 static int sm3_neon_update(struct shash_desc *desc, const u8 *data,
26 if (!crypto_simd_usable()) {
27 sm3_update(shash_desc_ctx(desc), data, len);
32 sm3_base_do_update(desc, data, len, sm3_neon_transform);
38 static int sm3_neon_final(struct shash_desc *desc, u8 *out)
40 if (!crypto_simd_usable()) {
41 sm3_final(shash_desc_ctx(desc), out);
46 sm3_base_do_finalize(desc, sm3_neon_transform);
49 return sm3_base_finish(desc, out);
52 static int sm3_neon_finup(struct shash_desc *desc, const u8 *data,
53 unsigned int len, u8 *out)
55 if (!crypto_simd_usable()) {
56 struct sm3_state *sctx = shash_desc_ctx(desc);
59 sm3_update(sctx, data, len);
66 sm3_base_do_update(desc, data, len, sm3_neon_transform);
67 sm3_base_do_finalize(desc, sm3_neon_transform);
70 return sm3_base_finish(desc, out);
73 static struct shash_alg sm3_alg = {
74 .digestsize = SM3_DIGEST_SIZE,
75 .init = sm3_base_init,
76 .update = sm3_neon_update,
77 .final = sm3_neon_final,
78 .finup = sm3_neon_finup,
79 .descsize = sizeof(struct sm3_state),
80 .base.cra_name = "sm3",
81 .base.cra_driver_name = "sm3-neon",
82 .base.cra_blocksize = SM3_BLOCK_SIZE,
83 .base.cra_module = THIS_MODULE,
84 .base.cra_priority = 200,
87 static int __init sm3_neon_init(void)
89 return crypto_register_shash(&sm3_alg);
92 static void __exit sm3_neon_fini(void)
94 crypto_unregister_shash(&sm3_alg);
97 module_init(sm3_neon_init);
98 module_exit(sm3_neon_fini);
100 MODULE_DESCRIPTION("SM3 secure hash using NEON instructions");
101 MODULE_AUTHOR("Jussi Kivilinna <jussi.kivilinna@iki.fi>");
102 MODULE_AUTHOR("Tianjia Zhang <tianjia.zhang@linux.alibaba.com>");
103 MODULE_LICENSE("GPL v2");