mirror of
https://github.com/torvalds/linux.git
synced 2024-11-22 04:02:20 +00:00
5f60d5f6bb
asm/unaligned.h is always an include of asm-generic/unaligned.h; might as well move that thing to linux/unaligned.h and include that - there's nothing arch-specific in that header. auto-generated by the following: for i in `git grep -l -w asm/unaligned.h`; do sed -i -e "s/asm\/unaligned.h/linux\/unaligned.h/" $i done for i in `git grep -l -w asm-generic/unaligned.h`; do sed -i -e "s/asm-generic\/unaligned.h/linux\/unaligned.h/" $i done git mv include/asm-generic/unaligned.h include/linux/unaligned.h git mv tools/include/asm-generic/unaligned.h tools/include/linux/unaligned.h sed -i -e "/unaligned.h/d" include/asm-generic/Kbuild sed -i -e "s/__ASM_GENERIC/__LINUX/" include/linux/unaligned.h tools/include/linux/unaligned.h
110 lines
2.5 KiB
C
110 lines
2.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/*
|
|
* sha1_base.h - core logic for SHA-1 implementations
|
|
*
|
|
* Copyright (C) 2015 Linaro Ltd <ard.biesheuvel@linaro.org>
|
|
*/
|
|
|
|
#ifndef _CRYPTO_SHA1_BASE_H
|
|
#define _CRYPTO_SHA1_BASE_H
|
|
|
|
#include <crypto/internal/hash.h>
|
|
#include <crypto/sha1.h>
|
|
#include <linux/crypto.h>
|
|
#include <linux/module.h>
|
|
#include <linux/string.h>
|
|
|
|
#include <linux/unaligned.h>
|
|
|
|
typedef void (sha1_block_fn)(struct sha1_state *sst, u8 const *src, int blocks);
|
|
|
|
static inline int sha1_base_init(struct shash_desc *desc)
|
|
{
|
|
struct sha1_state *sctx = shash_desc_ctx(desc);
|
|
|
|
sctx->state[0] = SHA1_H0;
|
|
sctx->state[1] = SHA1_H1;
|
|
sctx->state[2] = SHA1_H2;
|
|
sctx->state[3] = SHA1_H3;
|
|
sctx->state[4] = SHA1_H4;
|
|
sctx->count = 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static inline int sha1_base_do_update(struct shash_desc *desc,
|
|
const u8 *data,
|
|
unsigned int len,
|
|
sha1_block_fn *block_fn)
|
|
{
|
|
struct sha1_state *sctx = shash_desc_ctx(desc);
|
|
unsigned int partial = sctx->count % SHA1_BLOCK_SIZE;
|
|
|
|
sctx->count += len;
|
|
|
|
if (unlikely((partial + len) >= SHA1_BLOCK_SIZE)) {
|
|
int blocks;
|
|
|
|
if (partial) {
|
|
int p = SHA1_BLOCK_SIZE - partial;
|
|
|
|
memcpy(sctx->buffer + partial, data, p);
|
|
data += p;
|
|
len -= p;
|
|
|
|
block_fn(sctx, sctx->buffer, 1);
|
|
}
|
|
|
|
blocks = len / SHA1_BLOCK_SIZE;
|
|
len %= SHA1_BLOCK_SIZE;
|
|
|
|
if (blocks) {
|
|
block_fn(sctx, data, blocks);
|
|
data += blocks * SHA1_BLOCK_SIZE;
|
|
}
|
|
partial = 0;
|
|
}
|
|
if (len)
|
|
memcpy(sctx->buffer + partial, data, len);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static inline int sha1_base_do_finalize(struct shash_desc *desc,
|
|
sha1_block_fn *block_fn)
|
|
{
|
|
const int bit_offset = SHA1_BLOCK_SIZE - sizeof(__be64);
|
|
struct sha1_state *sctx = shash_desc_ctx(desc);
|
|
__be64 *bits = (__be64 *)(sctx->buffer + bit_offset);
|
|
unsigned int partial = sctx->count % SHA1_BLOCK_SIZE;
|
|
|
|
sctx->buffer[partial++] = 0x80;
|
|
if (partial > bit_offset) {
|
|
memset(sctx->buffer + partial, 0x0, SHA1_BLOCK_SIZE - partial);
|
|
partial = 0;
|
|
|
|
block_fn(sctx, sctx->buffer, 1);
|
|
}
|
|
|
|
memset(sctx->buffer + partial, 0x0, bit_offset - partial);
|
|
*bits = cpu_to_be64(sctx->count << 3);
|
|
block_fn(sctx, sctx->buffer, 1);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static inline int sha1_base_finish(struct shash_desc *desc, u8 *out)
|
|
{
|
|
struct sha1_state *sctx = shash_desc_ctx(desc);
|
|
__be32 *digest = (__be32 *)out;
|
|
int i;
|
|
|
|
for (i = 0; i < SHA1_DIGEST_SIZE / sizeof(__be32); i++)
|
|
put_unaligned_be32(sctx->state[i], digest++);
|
|
|
|
memzero_explicit(sctx, sizeof(*sctx));
|
|
return 0;
|
|
}
|
|
|
|
#endif /* _CRYPTO_SHA1_BASE_H */
|