freebsd-dev/sys/crypto/sha1.h
Conrad Meyer 571ebf7685 crypto routines: Hint minimum buffer sizes to the compiler
Use the C99 'static' keyword to hint to the compiler IVs and output digest
sizes.  The keyword informs the compiler of the minimum valid size for a given
array.  Obviously not every pointer can be validated (i.e., the compiler can
produce false negative but not false positive reports).

No functional change.  No ABI change.

Sponsored by:	EMC / Isilon Storage Division
2016-05-26 19:29:29 +00:00

73 lines
2.6 KiB
C

/* $FreeBSD$ */
/* $KAME: sha1.h,v 1.5 2000/03/27 04:36:23 sumikawa Exp $ */
/*
* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
* 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.
* 3. Neither the name of the project nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``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 PROJECT OR CONTRIBUTORS 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.
*/
/*
* FIPS pub 180-1: Secure Hash Algorithm (SHA-1)
* based on: http://csrc.nist.gov/fips/fip180-1.txt
* implemented by Jun-ichiro itojun Itoh <itojun@itojun.org>
*/
#ifndef _CRYPTO_SHA1_H_
#define _CRYPTO_SHA1_H_
struct sha1_ctxt {
union {
u_int8_t b8[20];
u_int32_t b32[5];
} h;
union {
u_int8_t b8[8];
u_int64_t b64[1];
} c;
union {
u_int8_t b8[64];
u_int32_t b32[16];
} m;
u_int8_t count;
};
typedef struct sha1_ctxt SHA1_CTX;
#define SHA1_RESULTLEN (160/8)
#ifdef _KERNEL
extern void sha1_init(struct sha1_ctxt *);
extern void sha1_pad(struct sha1_ctxt *);
extern void sha1_loop(struct sha1_ctxt *, const u_int8_t *, size_t);
extern void sha1_result(struct sha1_ctxt *, char[static SHA1_RESULTLEN]);
/* compatibilty with other SHA1 source codes */
#define SHA1Init(x) sha1_init((x))
#define SHA1Update(x, y, z) sha1_loop((x), (y), (z))
#define SHA1Final(x, y) sha1_result((y), (x))
#endif /* _KERNEL */
#endif /*_CRYPTO_SHA1_H_*/