[PATCH v4 12/13] crypto: sha256 - remove sha256_base.h

[Eric Biggers <ebiggers@kernel.org>]

From: Eric Biggers <ebiggers@google.com>

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

Signed-off-by: Eric Biggers <ebiggers@google.com>
---
 include/crypto/sha256_base.h | 183 -----------------------------------
 1 file changed, 183 deletions(-)
 delete mode 100644 include/crypto/sha256_base.h

diff --git a/include/crypto/sha256_base.h b/include/crypto/sha256_base.h
deleted file mode 100644
index 6878fb9c26c04..0000000000000
--- a/include/crypto/sha256_base.h
+++ /dev/null
@@ -1,183 +0,0 @@
-/* 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/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;
-	struct crypto_sha256_state *state = (void *)sctx;
-
-	sctx->count += len;
-
-	if (unlikely((partial + len) >= SHA256_BLOCK_SIZE)) {
-		int blocks;
-
-		if (partial) {
-			int p = SHA256_BLOCK_SIZE - partial;
-
-			memcpy(sctx->buf + partial, data, p);
-			data += p;
-			len -= p;
-
-			block_fn(state, sctx->buf, 1);
-		}
-
-		blocks = len / SHA256_BLOCK_SIZE;
-		len %= SHA256_BLOCK_SIZE;
-
-		if (blocks) {
-			block_fn(state, data, blocks);
-			data += blocks * SHA256_BLOCK_SIZE;
-		}
-		partial = 0;
-	}
-	if (len)
-		memcpy(sctx->buf + partial, data, len);
-
-	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_do_finalize(struct shash_desc *desc,
-					  sha256_block_fn *block_fn)
-{
-	struct sha256_state *sctx = shash_desc_ctx(desc);
-
-	return lib_sha256_base_do_finalize(sctx, 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 */
-- 
2.49.0