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89 lines
2.1 KiB
89 lines
2.1 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* sm3-ce-glue.c - SM3 secure hash using ARMv8.2 Crypto Extensions |
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* |
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* Copyright (C) 2018 Linaro Ltd <[email protected]> |
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*/ |
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#include <asm/neon.h> |
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#include <asm/simd.h> |
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#include <asm/unaligned.h> |
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#include <crypto/internal/hash.h> |
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#include <crypto/internal/simd.h> |
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#include <crypto/sm3.h> |
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#include <crypto/sm3_base.h> |
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#include <linux/cpufeature.h> |
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#include <linux/crypto.h> |
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#include <linux/module.h> |
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MODULE_DESCRIPTION("SM3 secure hash using ARMv8 Crypto Extensions"); |
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MODULE_AUTHOR("Ard Biesheuvel <[email protected]>"); |
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MODULE_LICENSE("GPL v2"); |
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asmlinkage void sm3_ce_transform(struct sm3_state *sst, u8 const *src, |
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int blocks); |
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static int sm3_ce_update(struct shash_desc *desc, const u8 *data, |
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unsigned int len) |
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{ |
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if (!crypto_simd_usable()) |
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return crypto_sm3_update(desc, data, len); |
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kernel_neon_begin(); |
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sm3_base_do_update(desc, data, len, sm3_ce_transform); |
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kernel_neon_end(); |
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return 0; |
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} |
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static int sm3_ce_final(struct shash_desc *desc, u8 *out) |
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{ |
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if (!crypto_simd_usable()) |
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return crypto_sm3_finup(desc, NULL, 0, out); |
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kernel_neon_begin(); |
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sm3_base_do_finalize(desc, sm3_ce_transform); |
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kernel_neon_end(); |
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return sm3_base_finish(desc, out); |
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} |
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static int sm3_ce_finup(struct shash_desc *desc, const u8 *data, |
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unsigned int len, u8 *out) |
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{ |
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if (!crypto_simd_usable()) |
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return crypto_sm3_finup(desc, data, len, out); |
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kernel_neon_begin(); |
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sm3_base_do_update(desc, data, len, sm3_ce_transform); |
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kernel_neon_end(); |
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return sm3_ce_final(desc, out); |
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} |
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static struct shash_alg sm3_alg = { |
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.digestsize = SM3_DIGEST_SIZE, |
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.init = sm3_base_init, |
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.update = sm3_ce_update, |
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.final = sm3_ce_final, |
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.finup = sm3_ce_finup, |
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.descsize = sizeof(struct sm3_state), |
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.base.cra_name = "sm3", |
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.base.cra_driver_name = "sm3-ce", |
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.base.cra_blocksize = SM3_BLOCK_SIZE, |
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.base.cra_module = THIS_MODULE, |
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.base.cra_priority = 200, |
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}; |
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static int __init sm3_ce_mod_init(void) |
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{ |
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return crypto_register_shash(&sm3_alg); |
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} |
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static void __exit sm3_ce_mod_fini(void) |
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{ |
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crypto_unregister_shash(&sm3_alg); |
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} |
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module_cpu_feature_match(SM3, sm3_ce_mod_init); |
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module_exit(sm3_ce_mod_fini);
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