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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 | // SPDX-License-Identifier: GPL-2.0-or-later /* * sm3-neon-glue.c - SM3 secure hash using NEON instructions * * Copyright (C) 2022 Tianjia Zhang <tianjia.zhang@linux.alibaba.com> */ #include <asm/neon.h> #include <asm/simd.h> #include <asm/unaligned.h> #include <crypto/internal/hash.h> #include <crypto/internal/simd.h> #include <crypto/sm3.h> #include <crypto/sm3_base.h> #include <linux/cpufeature.h> #include <linux/crypto.h> #include <linux/module.h> asmlinkage void sm3_neon_transform(struct sm3_state *sst, u8 const *src, int blocks); static int sm3_neon_update(struct shash_desc *desc, const u8 *data, unsigned int len) { if (!crypto_simd_usable()) { sm3_update(shash_desc_ctx(desc), data, len); return 0; } kernel_neon_begin(); sm3_base_do_update(desc, data, len, sm3_neon_transform); kernel_neon_end(); return 0; } static int sm3_neon_final(struct shash_desc *desc, u8 *out) { if (!crypto_simd_usable()) { sm3_final(shash_desc_ctx(desc), out); return 0; } kernel_neon_begin(); sm3_base_do_finalize(desc, sm3_neon_transform); kernel_neon_end(); return sm3_base_finish(desc, out); } static int sm3_neon_finup(struct shash_desc *desc, const u8 *data, unsigned int len, u8 *out) { if (!crypto_simd_usable()) { struct sm3_state *sctx = shash_desc_ctx(desc); if (len) sm3_update(sctx, data, len); sm3_final(sctx, out); return 0; } kernel_neon_begin(); if (len) sm3_base_do_update(desc, data, len, sm3_neon_transform); sm3_base_do_finalize(desc, sm3_neon_transform); kernel_neon_end(); return sm3_base_finish(desc, out); } static struct shash_alg sm3_alg = { .digestsize = SM3_DIGEST_SIZE, .init = sm3_base_init, .update = sm3_neon_update, .final = sm3_neon_final, .finup = sm3_neon_finup, .descsize = sizeof(struct sm3_state), .base.cra_name = "sm3", .base.cra_driver_name = "sm3-neon", .base.cra_blocksize = SM3_BLOCK_SIZE, .base.cra_module = THIS_MODULE, .base.cra_priority = 200, }; static int __init sm3_neon_init(void) { return crypto_register_shash(&sm3_alg); } static void __exit sm3_neon_fini(void) { crypto_unregister_shash(&sm3_alg); } module_init(sm3_neon_init); module_exit(sm3_neon_fini); MODULE_DESCRIPTION("SM3 secure hash using NEON instructions"); MODULE_AUTHOR("Jussi Kivilinna <jussi.kivilinna@iki.fi>"); MODULE_AUTHOR("Tianjia Zhang <tianjia.zhang@linux.alibaba.com>"); MODULE_LICENSE("GPL v2"); |