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c0f07da681
Use the Crypto API partial block handling. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
79 lines
1.9 KiB
C
79 lines
1.9 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Cryptographic API.
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*
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* powerpc implementation of the SHA1 Secure Hash Algorithm.
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*
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* Derived from cryptoapi implementation, adapted for in-place
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* scatterlist interface.
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*
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* Derived from "crypto/sha1.c"
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* Copyright (c) Alan Smithee.
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* Copyright (c) Andrew McDonald <andrew@mcdonald.org.uk>
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* Copyright (c) Jean-Francois Dive <jef@linuxbe.org>
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*/
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#include <crypto/internal/hash.h>
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#include <crypto/sha1.h>
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#include <crypto/sha1_base.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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asmlinkage void powerpc_sha_transform(u32 *state, const u8 *src);
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static void powerpc_sha_block(struct sha1_state *sctx, const u8 *data,
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int blocks)
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{
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do {
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powerpc_sha_transform(sctx->state, data);
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data += 64;
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} while (--blocks);
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}
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static int powerpc_sha1_update(struct shash_desc *desc, const u8 *data,
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unsigned int len)
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{
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return sha1_base_do_update_blocks(desc, data, len, powerpc_sha_block);
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}
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/* Add padding and return the message digest. */
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static int powerpc_sha1_finup(struct shash_desc *desc, const u8 *src,
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unsigned int len, u8 *out)
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{
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sha1_base_do_finup(desc, src, len, powerpc_sha_block);
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return sha1_base_finish(desc, out);
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}
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static struct shash_alg alg = {
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.digestsize = SHA1_DIGEST_SIZE,
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.init = sha1_base_init,
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.update = powerpc_sha1_update,
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.finup = powerpc_sha1_finup,
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.descsize = SHA1_STATE_SIZE,
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.base = {
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.cra_name = "sha1",
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.cra_driver_name= "sha1-powerpc",
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.cra_flags = CRYPTO_AHASH_ALG_BLOCK_ONLY,
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.cra_blocksize = SHA1_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 sha1_powerpc_mod_init(void)
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{
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return crypto_register_shash(&alg);
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}
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static void __exit sha1_powerpc_mod_fini(void)
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{
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crypto_unregister_shash(&alg);
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}
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module_init(sha1_powerpc_mod_init);
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module_exit(sha1_powerpc_mod_fini);
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MODULE_LICENSE("GPL");
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MODULE_DESCRIPTION("SHA1 Secure Hash Algorithm");
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MODULE_ALIAS_CRYPTO("sha1");
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MODULE_ALIAS_CRYPTO("sha1-powerpc");
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