crypto: sm3 - Remove sm3_base.h

Remove include/crypto/sm3_base.h, since it's no longer used.  The
corresponding logic was reimplemented in a central place in lib/crypto/.

Acked-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20260321040935.410034-11-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>

diff --git a/include/crypto/sm3_base.h b/include/crypto/sm3_base.h
deleted file mode 100644 (file)
index 9fa9956..0000000
--- a/include/crypto/sm3_base.h
+++ /dev/null
@@ -1,92 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * sm3_base.h - core logic for SM3 implementations
- *
- * Copyright (C) 2017 ARM Limited or its affiliates.
- * Written by Gilad Ben-Yossef <gilad@benyossef.com>
- */
-
-#ifndef _CRYPTO_SM3_BASE_H
-#define _CRYPTO_SM3_BASE_H
-
-#include <crypto/internal/hash.h>
-#include <crypto/sm3.h>
-#include <linux/math.h>
-#include <linux/module.h>
-#include <linux/string.h>
-#include <linux/types.h>
-#include <linux/unaligned.h>
-
-typedef void (sm3_block_fn)(struct sm3_state *sst, u8 const *src, int blocks);
-
-static inline int sm3_base_init(struct shash_desc *desc)
-{
-       struct sm3_state *sctx = shash_desc_ctx(desc);
-
-       sctx->state[0] = SM3_IVA;
-       sctx->state[1] = SM3_IVB;
-       sctx->state[2] = SM3_IVC;
-       sctx->state[3] = SM3_IVD;
-       sctx->state[4] = SM3_IVE;
-       sctx->state[5] = SM3_IVF;
-       sctx->state[6] = SM3_IVG;
-       sctx->state[7] = SM3_IVH;
-       sctx->count = 0;
-       return 0;
-}
-
-static inline int sm3_base_do_update_blocks(struct shash_desc *desc,
-                                           const u8 *data, unsigned int len,
-                                           sm3_block_fn *block_fn)
-{
-       unsigned int remain = len - round_down(len, SM3_BLOCK_SIZE);
-       struct sm3_state *sctx = shash_desc_ctx(desc);
-
-       sctx->count += len - remain;
-       block_fn(sctx, data, len / SM3_BLOCK_SIZE);
-       return remain;
-}
-
-static inline int sm3_base_do_finup(struct shash_desc *desc,
-                                   const u8 *src, unsigned int len,
-                                   sm3_block_fn *block_fn)
-{
-       unsigned int bit_offset = SM3_BLOCK_SIZE / 8 - 1;
-       struct sm3_state *sctx = shash_desc_ctx(desc);
-       union {
-               __be64 b64[SM3_BLOCK_SIZE / 4];
-               u8 u8[SM3_BLOCK_SIZE * 2];
-       } block = {};
-
-       if (len >= SM3_BLOCK_SIZE) {
-               int remain;
-
-               remain = sm3_base_do_update_blocks(desc, src, len, block_fn);
-               src += len - remain;
-               len = remain;
-       }
-
-       if (len >= bit_offset * 8)
-               bit_offset += SM3_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 / SM3_BLOCK_SIZE);
-       memzero_explicit(&block, sizeof(block));
-
-       return 0;
-}
-
-static inline int sm3_base_finish(struct shash_desc *desc, u8 *out)
-{
-       struct sm3_state *sctx = shash_desc_ctx(desc);
-       __be32 *digest = (__be32 *)out;
-       int i;
-
-       for (i = 0; i < SM3_DIGEST_SIZE / sizeof(__be32); i++)
-               put_unaligned_be32(sctx->state[i], digest++);
-       return 0;
-}
-
-#endif /* _CRYPTO_SM3_BASE_H */