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/*
* Linux/arm64 port of the OpenSSL SHA512 implementation for AArch64
*
* Copyright (c) 2016 Linaro Ltd. <ard.biesheuvel@linaro.org>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation; either version 2 of the License, or (at your option)
* any later version.
*
*/
#include <crypto/internal/hash.h>
#include <linux/cryptohash.h>
#include <linux/types.h>
#include <linux/string.h>
#include <crypto/sha.h>
#include <crypto/sha512_base.h>
#include <asm/neon.h>
MODULE_DESCRIPTION("SHA-384/SHA-512 secure hash for arm64");
MODULE_AUTHOR("Andy Polyakov <appro@openssl.org>");
MODULE_AUTHOR("Ard Biesheuvel <ard.biesheuvel@linaro.org>");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS_CRYPTO("sha384");
MODULE_ALIAS_CRYPTO("sha512");
asmlinkage void sha512_block_data_order(u32 *digest, const void *data,
unsigned int num_blks);
EXPORT_SYMBOL(sha512_block_data_order);
static int sha512_update(struct shash_desc *desc, const u8 *data,
unsigned int len)
{
return sha512_base_do_update(desc, data, len,
(sha512_block_fn *)sha512_block_data_order);
}
static int sha512_finup(struct shash_desc *desc, const u8 *data,
unsigned int len, u8 *out)
{
if (len)
sha512_base_do_update(desc, data, len,
(sha512_block_fn *)sha512_block_data_order);
sha512_base_do_finalize(desc,
(sha512_block_fn *)sha512_block_data_order);
return sha512_base_finish(desc, out);
}
static int sha512_final(struct shash_desc *desc, u8 *out)
{
return sha512_finup(desc, NULL, 0, out);
}
static struct shash_alg algs[] = { {
.digestsize = SHA512_DIGEST_SIZE,
.init = sha512_base_init,
.update = sha512_update,
.final = sha512_final,
.finup = sha512_finup,
.descsize = sizeof(struct sha512_state),
.base.cra_name = "sha512",
.base.cra_driver_name = "sha512-arm64",
.base.cra_priority = 150,
.base.cra_flags = CRYPTO_ALG_TYPE_SHASH,
.base.cra_blocksize = SHA512_BLOCK_SIZE,
.base.cra_module = THIS_MODULE,
}, {
.digestsize = SHA384_DIGEST_SIZE,
.init = sha384_base_init,
.update = sha512_update,
.final = sha512_final,
.finup = sha512_finup,
.descsize = sizeof(struct sha512_state),
.base.cra_name = "sha384",
.base.cra_driver_name = "sha384-arm64",
.base.cra_priority = 150,
.base.cra_flags = CRYPTO_ALG_TYPE_SHASH,
.base.cra_blocksize = SHA384_BLOCK_SIZE,
.base.cra_module = THIS_MODULE,
} };
static int __init sha512_mod_init(void)
{
return crypto_register_shashes(algs, ARRAY_SIZE(algs));
}
static void __exit sha512_mod_fini(void)
{
crypto_unregister_shashes(algs, ARRAY_SIZE(algs));
}
module_init(sha512_mod_init);
module_exit(sha512_mod_fini);
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