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Update one driver that used sizeof(struct sm3_state) to use sizeof(struct sm3_ctx) instead. Then, remove struct sm3_state and SM3_STATE_SIZE. This completes the replacement of struct sm3_state with struct sm3_ctx. Acked-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20260321040935.410034-13-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org>
88 lines
2.2 KiB
C
88 lines
2.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* SM3 hash algorithm
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*
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* Copyright (C) 2017 ARM Limited or its affiliates.
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* Copyright (C) 2017 Gilad Ben-Yossef <gilad@benyossef.com>
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* Copyright (C) 2021 Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
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*/
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#ifndef _CRYPTO_SM3_H
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#define _CRYPTO_SM3_H
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#include <linux/types.h>
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#define SM3_DIGEST_SIZE 32
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#define SM3_BLOCK_SIZE 64
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#define SM3_IVA 0x7380166f
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#define SM3_IVB 0x4914b2b9
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#define SM3_IVC 0x172442d7
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#define SM3_IVD 0xda8a0600
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#define SM3_IVE 0xa96f30bc
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#define SM3_IVF 0x163138aa
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#define SM3_IVG 0xe38dee4d
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#define SM3_IVH 0xb0fb0e4e
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/* State for the SM3 compression function */
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struct sm3_block_state {
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u32 h[SM3_DIGEST_SIZE / 4];
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};
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/**
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* struct sm3_ctx - Context for hashing a message with SM3
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* @state: the compression function state
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* @bytecount: number of bytes processed so far
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* @buf: partial block buffer; bytecount % SM3_BLOCK_SIZE bytes are valid
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*/
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struct sm3_ctx {
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struct sm3_block_state state;
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u64 bytecount;
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u8 buf[SM3_BLOCK_SIZE] __aligned(__alignof__(__be64));
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};
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/**
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* sm3_init() - Initialize an SM3 context for a new message
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* @ctx: the context to initialize
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*
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* If you don't need incremental computation, consider sm3() instead.
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*
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* Context: Any context.
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*/
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void sm3_init(struct sm3_ctx *ctx);
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/**
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* sm3_update() - Update an SM3 context with message data
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* @ctx: the context to update; must have been initialized
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* @data: the message data
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* @len: the data length in bytes
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*
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* This can be called any number of times.
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*
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* Context: Any context.
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*/
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void sm3_update(struct sm3_ctx *ctx, const u8 *data, size_t len);
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/**
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* sm3_final() - Finish computing an SM3 message digest
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* @ctx: the context to finalize; must have been initialized
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* @out: (output) the resulting SM3 message digest
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*
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* After finishing, this zeroizes @ctx. So the caller does not need to do it.
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*
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* Context: Any context.
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*/
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void sm3_final(struct sm3_ctx *ctx, u8 out[at_least SM3_DIGEST_SIZE]);
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/**
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* sm3() - Compute SM3 message digest in one shot
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* @data: the message data
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* @len: the data length in bytes
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* @out: (output) the resulting SM3 message digest
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*
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* Context: Any context.
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*/
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void sm3(const u8 *data, size_t len, u8 out[at_least SM3_DIGEST_SIZE]);
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#endif /* _CRYPTO_SM3_H */
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