153 lines
5.4 KiB
C
153 lines
5.4 KiB
C
/*
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* FILE: sha2.h
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* AUTHOR: Aaron D. Gifford - http://www.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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* Modified by Jelte Jansen to fit in ldns, and not clash with any
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* system-defined SHA code.
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* Changes:
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* - Renamed (external) functions and constants to fit ldns style
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* - Removed uintXX vs. u_intXX smartness, since ldns needs uintXX
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* anyway
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* - BYTE ORDER check replaced by simple ifdef as defined or not by
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* configure.ac
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* - Removed _End and _Data functions
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* - Added ldns_shaX(data, len, digest) functions
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the copyright holder nor the names of contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTOR(S) ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTOR(S) BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Id: sha2.h,v 1.1 2001/11/08 00:02:01 adg Exp adg $
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*/
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#ifndef __LDNS_SHA2_H__
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#define __LDNS_SHA2_H__
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*
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* Import u_intXX_t size_t type definitions from system headers. You
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* may need to change this, or define these things yourself in this
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* file.
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*
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* (include ldns/config.h so HAVE_INTTYPES is defined (or not, depending
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* on the system))
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*/
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#include <sys/types.h>
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#ifdef HAVE_INTTYPES_H
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#include <inttypes.h>
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#endif /* HAVE_INTTYPES_H */
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/*** SHA-256/384/512 Various Length Definitions ***********************/
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#define LDNS_SHA256_BLOCK_LENGTH 64
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#define LDNS_SHA256_DIGEST_LENGTH 32
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#define LDNS_SHA256_DIGEST_STRING_LENGTH (LDNS_SHA256_DIGEST_LENGTH * 2 + 1)
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#define LDNS_SHA384_BLOCK_LENGTH 128
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#define LDNS_SHA384_DIGEST_LENGTH 48
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#define LDNS_SHA384_DIGEST_STRING_LENGTH (LDNS_SHA384_DIGEST_LENGTH * 2 + 1)
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#define LDNS_SHA512_BLOCK_LENGTH 128
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#define LDNS_SHA512_DIGEST_LENGTH 64
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#define LDNS_SHA512_DIGEST_STRING_LENGTH (LDNS_SHA512_DIGEST_LENGTH * 2 + 1)
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/*** SHA-256/384/512 Context Structures *******************************/
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typedef struct _ldns_sha256_CTX {
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uint32_t state[8];
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uint64_t bitcount;
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uint8_t buffer[LDNS_SHA256_BLOCK_LENGTH];
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} ldns_sha256_CTX;
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typedef struct _ldns_sha512_CTX {
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uint64_t state[8];
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uint64_t bitcount[2];
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uint8_t buffer[LDNS_SHA512_BLOCK_LENGTH];
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} ldns_sha512_CTX;
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typedef ldns_sha512_CTX ldns_sha384_CTX;
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/*** SHA-256/384/512 Function Prototypes ******************************/
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void ldns_sha256_init(ldns_sha256_CTX *);
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void ldns_sha256_update(ldns_sha256_CTX*, const uint8_t*, size_t);
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void ldns_sha256_final(uint8_t[LDNS_SHA256_DIGEST_LENGTH], ldns_sha256_CTX*);
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void ldns_sha384_init(ldns_sha384_CTX*);
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void ldns_sha384_update(ldns_sha384_CTX*, const uint8_t*, size_t);
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void ldns_sha384_final(uint8_t[LDNS_SHA384_DIGEST_LENGTH], ldns_sha384_CTX*);
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void ldns_sha512_init(ldns_sha512_CTX*);
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void ldns_sha512_update(ldns_sha512_CTX*, const uint8_t*, size_t);
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void ldns_sha512_final(uint8_t[LDNS_SHA512_DIGEST_LENGTH], ldns_sha512_CTX*);
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/**
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* Convenience function to digest a fixed block of data at once.
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*
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* \param[in] data the data to digest
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* \param[in] data_len the length of data in bytes
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* \param[out] digest the length of data in bytes
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* This pointer MUST have LDNS_SHA256_DIGEST_LENGTH bytes
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* available
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* \return the SHA1 digest of the given data
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*/
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unsigned char *ldns_sha256(unsigned char *data, unsigned int data_len, unsigned char *digest);
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/**
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* Convenience function to digest a fixed block of data at once.
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*
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* \param[in] data the data to digest
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* \param[in] data_len the length of data in bytes
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* \param[out] digest the length of data in bytes
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* This pointer MUST have LDNS_SHA384_DIGEST_LENGTH bytes
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* available
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* \return the SHA1 digest of the given data
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*/
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unsigned char *ldns_sha384(unsigned char *data, unsigned int data_len, unsigned char *digest);
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/**
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* Convenience function to digest a fixed block of data at once.
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*
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* \param[in] data the data to digest
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* \param[in] data_len the length of data in bytes
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* \param[out] digest the length of data in bytes
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* This pointer MUST have LDNS_SHA512_DIGEST_LENGTH bytes
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* available
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* \return the SHA1 digest of the given data
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*/
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unsigned char *ldns_sha512(unsigned char *data, unsigned int data_len, unsigned char *digest);
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* __LDNS_SHA2_H__ */
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