Commit 5aab0177 authored by Eric Biggers's avatar Eric Biggers Committed by Herbert Xu
Browse files

crypto: sha256 - remove sha256_base.h 



sha256_base.h is no longer used, so remove it.

Signed-off-by: default avatarEric Biggers <ebiggers@google.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 11d7956d

include/crypto/sha256_base.h

deleted100644 → 0
+0 −151
Original line number Diff line number Diff line 
/* SPDX-License-Identifier: GPL-2.0-only */

/*

 * sha256_base.h - core logic for SHA-256 implementations

 *

 * Copyright (C) 2015 Linaro Ltd <ard.biesheuvel@linaro.org>

 */



#ifndef _CRYPTO_SHA256_BASE_H

#define _CRYPTO_SHA256_BASE_H



#include <crypto/internal/blockhash.h>

#include <crypto/internal/hash.h>

#include <crypto/internal/sha2.h>

#include <linux/math.h>

#include <linux/string.h>

#include <linux/types.h>

#include <linux/unaligned.h>



typedef void (sha256_block_fn)(struct crypto_sha256_state *sst, u8 const *src,

			       int blocks);



static inline int sha224_base_init(struct shash_desc *desc)

{

	struct sha256_state *sctx = shash_desc_ctx(desc);



	sha224_init(sctx);

	return 0;

}



static inline int sha256_base_init(struct shash_desc *desc)

{

	struct sha256_state *sctx = shash_desc_ctx(desc);



	sha256_init(sctx);

	return 0;

}



static inline int lib_sha256_base_do_update(struct sha256_state *sctx,

					    const u8 *data,

					    unsigned int len,

					    sha256_block_fn *block_fn)

{

	unsigned int partial = sctx->count % SHA256_BLOCK_SIZE;



	sctx->count += len;

	BLOCK_HASH_UPDATE_BLOCKS(block_fn, &sctx->ctx, data, len,

				 SHA256_BLOCK_SIZE, sctx->buf, partial);

	return 0;

}



static inline int lib_sha256_base_do_update_blocks(

	struct crypto_sha256_state *sctx, const u8 *data, unsigned int len,

	sha256_block_fn *block_fn)

{

	unsigned int remain = len - round_down(len, SHA256_BLOCK_SIZE);



	sctx->count += len - remain;

	block_fn(sctx, data, len / SHA256_BLOCK_SIZE);

	return remain;

}



static inline int sha256_base_do_update_blocks(

	struct shash_desc *desc, const u8 *data, unsigned int len,

	sha256_block_fn *block_fn)

{

	return lib_sha256_base_do_update_blocks(shash_desc_ctx(desc), data,

						len, block_fn);

}



static inline int lib_sha256_base_do_finup(struct crypto_sha256_state *sctx,

					   const u8 *src, unsigned int len,

					   sha256_block_fn *block_fn)

{

	unsigned int bit_offset = SHA256_BLOCK_SIZE / 8 - 1;

	union {

		__be64 b64[SHA256_BLOCK_SIZE / 4];

		u8 u8[SHA256_BLOCK_SIZE * 2];

	} block = {};



	if (len >= bit_offset * 8)

		bit_offset += SHA256_BLOCK_SIZE / 8;

	memcpy(&block, src, len);

	block.u8[len] = 0x80;

	sctx->count += len;

	block.b64[bit_offset] = cpu_to_be64(sctx->count << 3);

	block_fn(sctx, block.u8, (bit_offset + 1) * 8 / SHA256_BLOCK_SIZE);

	memzero_explicit(&block, sizeof(block));



	return 0;

}



static inline int sha256_base_do_finup(struct shash_desc *desc,

				       const u8 *src, unsigned int len,

				       sha256_block_fn *block_fn)

{

	struct crypto_sha256_state *sctx = shash_desc_ctx(desc);



	if (len >= SHA256_BLOCK_SIZE) {

		int remain;



		remain = lib_sha256_base_do_update_blocks(sctx, src, len,

							  block_fn);

		src += len - remain;

		len = remain;

	}

	return lib_sha256_base_do_finup(sctx, src, len, block_fn);

}



static inline int lib_sha256_base_do_finalize(struct sha256_state *sctx,

					      sha256_block_fn *block_fn)

{

	unsigned int partial = sctx->count % SHA256_BLOCK_SIZE;

	struct crypto_sha256_state *state = (void *)sctx;



	sctx->count -= partial;

	return lib_sha256_base_do_finup(state, sctx->buf, partial, block_fn);

}



static inline int __sha256_base_finish(u32 state[SHA256_DIGEST_SIZE / 4],

				       u8 *out, unsigned int digest_size)

{

	__be32 *digest = (__be32 *)out;

	int i;



	for (i = 0; digest_size > 0; i++, digest_size -= sizeof(__be32))

		put_unaligned_be32(state[i], digest++);

	return 0;

}



static inline void lib_sha256_base_finish(struct sha256_state *sctx, u8 *out,

					  unsigned int digest_size)

{

	__sha256_base_finish(sctx->state, out, digest_size);

	memzero_explicit(sctx, sizeof(*sctx));

}



static inline int sha256_base_finish(struct shash_desc *desc, u8 *out)

{

	unsigned int digest_size = crypto_shash_digestsize(desc->tfm);

	struct crypto_sha256_state *sctx = shash_desc_ctx(desc);



	return __sha256_base_finish(sctx->state, out, digest_size);

}



static inline void sha256_transform_blocks(struct crypto_sha256_state *sst,

					   const u8 *input, int blocks)

{

	sha256_blocks_generic(sst->state, input, blocks);

}



#endif /* _CRYPTO_SHA256_BASE_H */