linux/lib/crypto/sha256.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * SHA-256, as specified in
 * http://csrc.nist.gov/groups/STM/cavp/documents/shs/sha256-384-512.pdf
 *
 * SHA-256 code by Jean-Luc Cooke <[email protected]>.
 *
 * Copyright (c) Jean-Luc Cooke <[email protected]>
 * Copyright (c) Andrew McDonald <[email protected]>
 * Copyright (c) 2002 James Morris <[email protected]>
 * Copyright (c) 2014 Red Hat Inc.
 */

#include <asm/unaligned.h>
#include <crypto/sha256_base.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/string.h>

static const u32 SHA256_K[] = …;

static inline u32 Ch(u32 x, u32 y, u32 z)
{ … }

static inline u32 Maj(u32 x, u32 y, u32 z)
{ … }

#define e0(x) …
#define e1(x) …
#define s0(x) …
#define s1(x) …

static inline void LOAD_OP(int I, u32 *W, const u8 *input)
{ … }

static inline void BLEND_OP(int I, u32 *W)
{ … }

#define SHA256_ROUND(i, a, b, c, d, e, f, g, h) …

static void sha256_transform(u32 *state, const u8 *input, u32 *W)
{ … }

static void sha256_transform_blocks(struct sha256_state *sctx,
				    const u8 *input, int blocks)
{ … }

void sha256_update(struct sha256_state *sctx, const u8 *data, unsigned int len)
{ … }
EXPORT_SYMBOL(…);

static void __sha256_final(struct sha256_state *sctx, u8 *out, int digest_size)
{ … }

void sha256_final(struct sha256_state *sctx, u8 *out)
{ … }
EXPORT_SYMBOL(…);

void sha224_final(struct sha256_state *sctx, u8 *out)
{ … }
EXPORT_SYMBOL(…);

void sha256(const u8 *data, unsigned int len, u8 *out)
{ … }
EXPORT_SYMBOL(…);

MODULE_DESCRIPTION(…) …;
MODULE_LICENSE(…) …;