From 3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Wed, 2 Sep 2026 15:31:14 -0700 Subject: treewide: refresh kmalloc_obj() conversions This is another run of the Coccinelle script for converting kmalloc() family of allocations to kmalloc_obj() via the existing rules in scripts/coccinelle/api/kmalloc_objs.cocci This catches both the set of kmalloc() uses added since the first kmalloc_obj() conversions in v7.0 and adds a large group missed in the first pass due to Coccinelle not interacting well with the cleanup.h scoped_...() family of macros[1]. I worked around this with spatch's "--macro-file" argument to a file with all the scoped_...() macros mapped to Coccinelle's YACFE_ITERATOR[2] as that was the closest viable control flow indicator I could find. Build tested allmodconfig on x86, arm64, arm, loongarch, mips, powerpc, riscv, and s390 with no new warnings. Link: https://lore.kernel.org/lkml/202609021314.8A9C0B8@keescook/ [1] Link: https://github.com/coccinelle/coccinelle/blob/master/standard.h [2] Signed-off-by: Kees Cook --- include/crypto/sm3.h | 87 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 87 insertions(+) create mode 100644 include/crypto/sm3.h (limited to 'include/crypto/sm3.h') diff --git a/include/crypto/sm3.h b/include/crypto/sm3.h new file mode 100644 index 000000000..371e8a661 --- /dev/null +++ b/include/crypto/sm3.h @@ -0,0 +1,87 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * SM3 hash algorithm + * + * Copyright (C) 2017 ARM Limited or its affiliates. + * Copyright (C) 2017 Gilad Ben-Yossef + * Copyright (C) 2021 Tianjia Zhang + */ + +#ifndef _CRYPTO_SM3_H +#define _CRYPTO_SM3_H + +#include + +#define SM3_DIGEST_SIZE 32 +#define SM3_BLOCK_SIZE 64 + +#define SM3_IVA 0x7380166f +#define SM3_IVB 0x4914b2b9 +#define SM3_IVC 0x172442d7 +#define SM3_IVD 0xda8a0600 +#define SM3_IVE 0xa96f30bc +#define SM3_IVF 0x163138aa +#define SM3_IVG 0xe38dee4d +#define SM3_IVH 0xb0fb0e4e + +/* State for the SM3 compression function */ +struct sm3_block_state { + u32 h[SM3_DIGEST_SIZE / 4]; +}; + +/** + * struct sm3_ctx - Context for hashing a message with SM3 + * @state: the compression function state + * @bytecount: number of bytes processed so far + * @buf: partial block buffer; bytecount % SM3_BLOCK_SIZE bytes are valid + */ +struct sm3_ctx { + struct sm3_block_state state; + u64 bytecount; + u8 buf[SM3_BLOCK_SIZE] __aligned(__alignof__(__be64)); +}; + +/** + * sm3_init() - Initialize an SM3 context for a new message + * @ctx: the context to initialize + * + * If you don't need incremental computation, consider sm3() instead. + * + * Context: Any context. + */ +void sm3_init(struct sm3_ctx *ctx); + +/** + * sm3_update() - Update an SM3 context with message data + * @ctx: the context to update; must have been initialized + * @data: the message data + * @len: the data length in bytes + * + * This can be called any number of times. + * + * Context: Any context. + */ +void sm3_update(struct sm3_ctx *ctx, const u8 *data, size_t len); + +/** + * sm3_final() - Finish computing an SM3 message digest + * @ctx: the context to finalize; must have been initialized + * @out: (output) the resulting SM3 message digest + * + * After finishing, this zeroizes @ctx. So the caller does not need to do it. + * + * Context: Any context. + */ +void sm3_final(struct sm3_ctx *ctx, u8 out[at_least SM3_DIGEST_SIZE]); + +/** + * sm3() - Compute SM3 message digest in one shot + * @data: the message data + * @len: the data length in bytes + * @out: (output) the resulting SM3 message digest + * + * Context: Any context. + */ +void sm3(const u8 *data, size_t len, u8 out[at_least SM3_DIGEST_SIZE]); + +#endif /* _CRYPTO_SM3_H */ -- cgit v1.3.1