120 lines
3 KiB
C
120 lines
3 KiB
C
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/*
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* sha512-glue.c - accelerated SHA-384/512 for ARM
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*
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* Copyright (C) 2015 Linaro Ltd <ard.biesheuvel@linaro.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <crypto/internal/hash.h>
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#include <crypto/sha.h>
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#include <crypto/sha512_base.h>
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#include <linux/crypto.h>
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#include <linux/module.h>
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#include <asm/hwcap.h>
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#include <asm/neon.h>
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#include "sha512.h"
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MODULE_DESCRIPTION("Accelerated SHA-384/SHA-512 secure hash for ARM");
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MODULE_AUTHOR("Ard Biesheuvel <ard.biesheuvel@linaro.org>");
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MODULE_LICENSE("GPL v2");
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MODULE_ALIAS_CRYPTO("sha384");
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MODULE_ALIAS_CRYPTO("sha512");
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MODULE_ALIAS_CRYPTO("sha384-arm");
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MODULE_ALIAS_CRYPTO("sha512-arm");
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asmlinkage void sha512_block_data_order(u64 *state, u8 const *src, int blocks);
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int sha512_arm_update(struct shash_desc *desc, const u8 *data,
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unsigned int len)
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{
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return sha512_base_do_update(desc, data, len,
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(sha512_block_fn *)sha512_block_data_order);
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}
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int sha512_arm_final(struct shash_desc *desc, u8 *out)
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{
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sha512_base_do_finalize(desc,
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(sha512_block_fn *)sha512_block_data_order);
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return sha512_base_finish(desc, out);
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}
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int sha512_arm_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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sha512_base_do_update(desc, data, len,
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(sha512_block_fn *)sha512_block_data_order);
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return sha512_arm_final(desc, out);
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}
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static struct shash_alg sha512_arm_algs[] = { {
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.init = sha384_base_init,
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.update = sha512_arm_update,
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.final = sha512_arm_final,
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.finup = sha512_arm_finup,
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.descsize = sizeof(struct sha512_state),
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.digestsize = SHA384_DIGEST_SIZE,
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.base = {
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.cra_name = "sha384",
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.cra_driver_name = "sha384-arm",
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.cra_priority = 250,
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.cra_blocksize = SHA512_BLOCK_SIZE,
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.cra_module = THIS_MODULE,
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}
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}, {
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.init = sha512_base_init,
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.update = sha512_arm_update,
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.final = sha512_arm_final,
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.finup = sha512_arm_finup,
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.descsize = sizeof(struct sha512_state),
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.digestsize = SHA512_DIGEST_SIZE,
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.base = {
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.cra_name = "sha512",
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.cra_driver_name = "sha512-arm",
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.cra_priority = 250,
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.cra_blocksize = SHA512_BLOCK_SIZE,
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.cra_module = THIS_MODULE,
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}
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} };
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static int __init sha512_arm_mod_init(void)
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{
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int err;
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err = crypto_register_shashes(sha512_arm_algs,
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ARRAY_SIZE(sha512_arm_algs));
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if (err)
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return err;
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if (IS_ENABLED(CONFIG_KERNEL_MODE_NEON) && cpu_has_neon()) {
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err = crypto_register_shashes(sha512_neon_algs,
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ARRAY_SIZE(sha512_neon_algs));
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if (err)
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goto err_unregister;
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}
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return 0;
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err_unregister:
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crypto_unregister_shashes(sha512_arm_algs,
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ARRAY_SIZE(sha512_arm_algs));
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return err;
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}
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static void __exit sha512_arm_mod_fini(void)
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{
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crypto_unregister_shashes(sha512_arm_algs,
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ARRAY_SIZE(sha512_arm_algs));
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if (IS_ENABLED(CONFIG_KERNEL_MODE_NEON) && cpu_has_neon())
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crypto_unregister_shashes(sha512_neon_algs,
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ARRAY_SIZE(sha512_neon_algs));
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}
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module_init(sha512_arm_mod_init);
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module_exit(sha512_arm_mod_fini);
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