77 lines
2.7 KiB
C
77 lines
2.7 KiB
C
/* $OpenBSD: hash.h,v 1.8 2006/06/10 20:10:02 hshoexer Exp $ */
|
|
/* $EOM: hash.h,v 1.6 1998/07/25 22:04:36 niklas Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1998 Niels Provos. All rights reserved.
|
|
*
|
|
* 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.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
|
|
*/
|
|
|
|
/*
|
|
* This code was written under funding by Ericsson Radio Systems.
|
|
*/
|
|
|
|
#ifndef _HASH_H_
|
|
#define _HASH_H_
|
|
|
|
/* Normal mode hash encapsulation */
|
|
|
|
#define MD5_SIZE 16
|
|
#define SHA1_SIZE 20
|
|
#define SHA2_256_SIZE 32
|
|
#define SHA2_384_SIZE 48
|
|
#define SHA2_512_SIZE 64
|
|
#define HASH_MAX SHA2_512_SIZE
|
|
|
|
enum hashes {
|
|
HASH_MD5 = 0,
|
|
HASH_SHA1,
|
|
HASH_SHA2_256,
|
|
HASH_SHA2_384,
|
|
HASH_SHA2_512
|
|
};
|
|
|
|
struct hash {
|
|
enum hashes type;
|
|
int id; /* ISAKMP/Oakley ID */
|
|
u_int8_t hashsize; /* Size of the hash */
|
|
void *ctx; /* Pointer to a context, for HMAC ictx */
|
|
unsigned char *digest; /* Pointer to a digest */
|
|
int ctxsize;
|
|
void *ctx2; /* Pointer to a 2nd context, for HMAC octx */
|
|
void (*Init) (void *);
|
|
void (*Update) (void *, unsigned char *, unsigned int);
|
|
void (*Final) (unsigned char *, void *);
|
|
void (*HMACInit) (struct hash *, unsigned char *, unsigned int);
|
|
void (*HMACFinal) (unsigned char *, struct hash *);
|
|
};
|
|
|
|
/* HMAC Hash Encapsulation */
|
|
|
|
#define HMAC_IPAD_VAL 0x36
|
|
#define HMAC_OPAD_VAL 0x5C
|
|
#define HMAC_BLOCKLEN 64
|
|
|
|
extern struct hash *hash_get(enum hashes);
|
|
extern void hmac_init(struct hash *, unsigned char *, unsigned int);
|
|
|
|
#endif /* _HASH_H_ */
|