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/*
* FILE: sha2.h
* AUTHOR: Aaron D. Gifford - http://www.aarongifford.com/
*
* Copyright (c) 2000-2001, Aaron D. Gifford
* All rights reserved.
*
* Modified by Jelte Jansen to fit in ldns, and not clash with any
* system-defined SHA code.
* Changes:
* - Renamed (external) functions and constants to fit ldns style
* - Removed uintXX vs. u_intXX smartness, since ldns needs uintXX
* anyway
* - BYTE ORDER check replaced by simple ifdef as defined or not by
* configure.ac
* - Removed _End and _Data functions
* - Added ldns_shaX(data, len, digest) functions
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the copyright holder nor the names of contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTOR(S) ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTOR(S) BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: sha2.h,v 1.1 2001/11/08 00:02:01 adg Exp adg $
*/
#ifndef __LDNS_SHA2_H__
#define __LDNS_SHA2_H__
#ifdef __cplusplus
extern "C" {
#endif
/*
* Import u_intXX_t size_t type definitions from system headers. You
* may need to change this, or define these things yourself in this
* file.
*/
#include <sys/types.h>
#if LDNS_BUILD_CONFIG_HAVE_INTTYPES_H
#include <inttypes.h>
#endif /* LDNS_BUILD_CONFIG_HAVE_INTTYPES_H */
/*** SHA-256/384/512 Various Length Definitions ***********************/
#define LDNS_SHA256_BLOCK_LENGTH 64
#define LDNS_SHA256_DIGEST_LENGTH 32
#define LDNS_SHA256_DIGEST_STRING_LENGTH (LDNS_SHA256_DIGEST_LENGTH * 2 + 1)
#define LDNS_SHA384_BLOCK_LENGTH 128
#define LDNS_SHA384_DIGEST_LENGTH 48
#define LDNS_SHA384_DIGEST_STRING_LENGTH (LDNS_SHA384_DIGEST_LENGTH * 2 + 1)
#define LDNS_SHA512_BLOCK_LENGTH 128
#define LDNS_SHA512_DIGEST_LENGTH 64
#define LDNS_SHA512_DIGEST_STRING_LENGTH (LDNS_SHA512_DIGEST_LENGTH * 2 + 1)
/*** SHA-256/384/512 Context Structures *******************************/
typedef struct _ldns_sha256_CTX {
uint32_t state[8];
uint64_t bitcount;
uint8_t buffer[LDNS_SHA256_BLOCK_LENGTH];
} ldns_sha256_CTX;
typedef struct _ldns_sha512_CTX {
uint64_t state[8];
uint64_t bitcount[2];
uint8_t buffer[LDNS_SHA512_BLOCK_LENGTH];
} ldns_sha512_CTX;
typedef ldns_sha512_CTX ldns_sha384_CTX;
/*** SHA-256/384/512 Function Prototypes ******************************/
void ldns_sha256_init(ldns_sha256_CTX *);
void ldns_sha256_update(ldns_sha256_CTX*, const uint8_t*, size_t);
void ldns_sha256_final(uint8_t[LDNS_SHA256_DIGEST_LENGTH], ldns_sha256_CTX*);
void ldns_sha384_init(ldns_sha384_CTX*);
void ldns_sha384_update(ldns_sha384_CTX*, const uint8_t*, size_t);
void ldns_sha384_final(uint8_t[LDNS_SHA384_DIGEST_LENGTH], ldns_sha384_CTX*);
void ldns_sha512_init(ldns_sha512_CTX*);
void ldns_sha512_update(ldns_sha512_CTX*, const uint8_t*, size_t);
void ldns_sha512_final(uint8_t[LDNS_SHA512_DIGEST_LENGTH], ldns_sha512_CTX*);
/**
* Convenience function to digest a fixed block of data at once.
*
* \param[in] data the data to digest
* \param[in] data_len the length of data in bytes
* \param[out] digest the length of data in bytes
* This pointer MUST have LDNS_SHA256_DIGEST_LENGTH bytes
* available
* \return the SHA1 digest of the given data
*/
unsigned char *ldns_sha256(unsigned char *data, unsigned int data_len, unsigned char *digest);
/**
* Convenience function to digest a fixed block of data at once.
*
* \param[in] data the data to digest
* \param[in] data_len the length of data in bytes
* \param[out] digest the length of data in bytes
* This pointer MUST have LDNS_SHA384_DIGEST_LENGTH bytes
* available
* \return the SHA1 digest of the given data
*/
unsigned char *ldns_sha384(unsigned char *data, unsigned int data_len, unsigned char *digest);
/**
* Convenience function to digest a fixed block of data at once.
*
* \param[in] data the data to digest
* \param[in] data_len the length of data in bytes
* \param[out] digest the length of data in bytes
* This pointer MUST have LDNS_SHA512_DIGEST_LENGTH bytes
* available
* \return the SHA1 digest of the given data
*/
unsigned char *ldns_sha512(unsigned char *data, unsigned int data_len, unsigned char *digest);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __LDNS_SHA2_H__ */
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