2025-06-11 22:53:28 +02:00
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/* SPDX-License-Identifier: BSD-3-Clause */
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2025-05-24 10:59:23 +02:00
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/* $OpenBSD: sha2.h,v 1.10 2016/09/03 17:00:29 tedu Exp $ */
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/*
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* FILE: sha2.h
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* AUTHOR: Aaron D. Gifford <me@aarongifford.com>
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*
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* Copyright (c) 2000-2001, Aaron D. Gifford
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* All rights reserved.
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*
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* $From: sha2.h,v 1.1 2001/11/08 00:02:01 adg Exp adg $
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*/
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#ifndef __SHA2_H__
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#define __SHA2_H__
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#include "stdint.h"
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/*** SHA-256/384/512 Various Length Definitions ***********************/
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#define SHA256_BLOCK_LENGTH 64
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#define SHA256_DIGEST_LENGTH 32
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#define SHA256_DIGEST_STRING_LENGTH (SHA256_DIGEST_LENGTH * 2 + 1)
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/*** SHA-224/256/384/512 Context Structure *******************************/
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typedef struct _SHA2_CTX {
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union {
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uint32_t st32[8];
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uint64_t st64[8];
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} state;
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uint64_t bitcount[2];
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uint8_t buffer[SHA256_BLOCK_LENGTH];
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} SHA2_CTX;
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void SHA256Init(SHA2_CTX *);
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void SHA256Transform(uint32_t state[8], const uint8_t [SHA256_BLOCK_LENGTH]);
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void SHA256Update(SHA2_CTX *, const uint8_t *, size_t);
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void SHA256Pad(SHA2_CTX *);
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void SHA256Final(uint8_t [SHA256_DIGEST_LENGTH], SHA2_CTX *);
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char *SHA256End(SHA2_CTX *, char *);
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#endif /* __SHA2_H__ */
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