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crypto: sha256_base - Remove partial block helpers

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Now that all sha256_base users have been converted to use the API
partial block handling, remove the partial block helpers.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Herbert Xu 2025-04-18 11:00:08 +08:00
parent 4dc9479742
commit 8ba81fef40
3 changed files with 17 additions and 48 deletions
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4
arch/x86/crypto/sha256_ssse3_glue.c
View file

@ -51,7 +51,7 @@ MODULE_DEVICE_TABLE(x86cpu, module_cpu_ids);
static int _sha256_update(struct shash_desc *desc, const u8 *data,
unsigned int len,
crypto_sha256_block_fn *sha256_xform)
sha256_block_fn *sha256_xform)
{
int remain;
@ -69,7 +69,7 @@ static int _sha256_update(struct shash_desc *desc, const u8 *data,
}
static int sha256_finup(struct shash_desc *desc, const u8 *data,
unsigned int len, u8 *out, crypto_sha256_block_fn *sha256_xform)
unsigned int len, u8 *out, sha256_block_fn *sha256_xform)
{
kernel_fpu_begin();
sha256_base_do_finup(desc, data, len, sha256_xform);

48
include/crypto/sha256_base.h
View file

@ -15,10 +15,8 @@
#include <linux/types.h>
#include <linux/unaligned.h>
typedef void (sha256_block_fn)(struct sha256_state *sst, u8 const *src,
typedef void (sha256_block_fn)(struct crypto_sha256_state *sst, u8 const *src,
int blocks);
typedef void (crypto_sha256_block_fn)(struct crypto_sha256_state *sst,
u8 const *src, int blocks);
static inline int sha224_base_init(struct shash_desc *desc)
{
@ -42,6 +40,7 @@ static inline int lib_sha256_base_do_update(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 += len;
@ -55,14 +54,14 @@ static inline int lib_sha256_base_do_update(struct sha256_state *sctx,
data += p;
len -= p;
block_fn(sctx, sctx->buf, 1);
block_fn(state, sctx->buf, 1);
}
blocks = len / SHA256_BLOCK_SIZE;
len %= SHA256_BLOCK_SIZE;
if (blocks) {
block_fn(sctx, data, blocks);
block_fn(state, data, blocks);
data += blocks * SHA256_BLOCK_SIZE;
}
partial = 0;
@ -73,19 +72,9 @@ static inline int lib_sha256_base_do_update(struct sha256_state *sctx,
return 0;
}
static inline int sha256_base_do_update(struct shash_desc *desc,
const u8 *data,
unsigned int len,
sha256_block_fn *block_fn)
{
struct sha256_state *sctx = shash_desc_ctx(desc);
return lib_sha256_base_do_update(sctx, data, len, block_fn);
}
static inline int lib_sha256_base_do_update_blocks(
struct crypto_sha256_state *sctx, const u8 *data, unsigned int len,
crypto_sha256_block_fn *block_fn)
sha256_block_fn *block_fn)
{
unsigned int remain = len - round_down(len, SHA256_BLOCK_SIZE);
@ -96,7 +85,7 @@ static inline int lib_sha256_base_do_update_blocks(
static inline int sha256_base_do_update_blocks(
struct shash_desc *desc, const u8 *data, unsigned int len,
crypto_sha256_block_fn *block_fn)
sha256_block_fn *block_fn)
{
return lib_sha256_base_do_update_blocks(shash_desc_ctx(desc), data,
len, block_fn);
@ -104,7 +93,7 @@ static inline int sha256_base_do_update_blocks(
static inline int lib_sha256_base_do_finup(struct crypto_sha256_state *sctx,
const u8 *src, unsigned int len,
crypto_sha256_block_fn *block_fn)
sha256_block_fn *block_fn)
{
unsigned int bit_offset = SHA256_BLOCK_SIZE / 8 - 1;
union {
@ -126,7 +115,7 @@ static inline int lib_sha256_base_do_finup(struct crypto_sha256_state *sctx,
static inline int sha256_base_do_finup(struct shash_desc *desc,
const u8 *src, unsigned int len,
crypto_sha256_block_fn *block_fn)
sha256_block_fn *block_fn)
{
struct crypto_sha256_state *sctx = shash_desc_ctx(desc);
@ -144,23 +133,11 @@ static inline int sha256_base_do_finup(struct shash_desc *desc,
static inline int lib_sha256_base_do_finalize(struct sha256_state *sctx,
sha256_block_fn *block_fn)
{
const int bit_offset = SHA256_BLOCK_SIZE - sizeof(__be64);
__be64 *bits = (__be64 *)(sctx->buf + bit_offset);
unsigned int partial = sctx->count % SHA256_BLOCK_SIZE;
struct crypto_sha256_state *state = (void *)sctx;
sctx->buf[partial++] = 0x80;
if (partial > bit_offset) {
memset(sctx->buf + partial, 0x0, SHA256_BLOCK_SIZE - partial);
partial = 0;
block_fn(sctx, sctx->buf, 1);
}
memset(sctx->buf + partial, 0x0, bit_offset - partial);
*bits = cpu_to_be64(sctx->count << 3);
block_fn(sctx, sctx->buf, 1);
return 0;
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,
@ -182,12 +159,11 @@ static inline int __sha256_base_finish(u32 state[SHA256_DIGEST_SIZE / 4],
return 0;
}
static inline int lib_sha256_base_finish(struct sha256_state *sctx, u8 *out,
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));
return 0;
}
static inline int sha256_base_finish(struct shash_desc *desc, u8 *out)

11
lib/crypto/sha256.c
View file

@ -132,22 +132,15 @@ void sha256_transform_blocks(struct crypto_sha256_state *sst,
}
EXPORT_SYMBOL_GPL(sha256_transform_blocks);
static void lib_sha256_transform_blocks(struct sha256_state *sctx,
const u8 *input, int blocks)
{
sha256_transform_blocks((struct crypto_sha256_state *)sctx, input,
blocks);
}
void sha256_update(struct sha256_state *sctx, const u8 *data, unsigned int len)
{
lib_sha256_base_do_update(sctx, data, len, lib_sha256_transform_blocks);
lib_sha256_base_do_update(sctx, data, len, sha256_transform_blocks);
}
EXPORT_SYMBOL(sha256_update);
static void __sha256_final(struct sha256_state *sctx, u8 *out, int digest_size)
{
lib_sha256_base_do_finalize(sctx, lib_sha256_transform_blocks);
lib_sha256_base_do_finalize(sctx, sha256_transform_blocks);
lib_sha256_base_finish(sctx, out, digest_size);
}