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/*
* shs - old Secure Hash Standard
*
**************************************************************************
* This version implements the old Secure Hash Algorithm specified by *
* (FIPS Pub 180). This version is kept for backward compatibility with *
* shs version 2.10.1. See the shs utility for the new standard. *
**************************************************************************
*
* Written 2 September 1992, Peter C. Gutmann.
*
* This file was Modified by:
*
* Landon Curt Noll
* http://www.isthe.com/chongo/
*
* chongo <was here> /\../\
*
* This code has been placed in the public domain. Please do not
* copyright this code.
*
* LANDON CURT NOLL DISCLAIMS ALL WARRANTIES WITH REGARD TO
* THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MER-
* CHANTABILITY AND FITNESS. IN NO EVENT SHALL LANDON CURT
* NOLL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* @(#) $Revision: 29.2 $
* @(#) $Id: shs.h,v 29.2 2000/06/07 14:02:13 chongo Exp $
* @(#) $Source: /usr/local/src/cmd/calc/RCS/shs.h,v $
*
* This file is not covered under version 2.1 of the GNU LGPL.
*/
#if !defined(__SHS_H__)
#define __SHS_H__
/* SHS_CHUNKSIZE must be a power of 2 - fixed value defined by the algorithm */
#define SHS_CHUNKSIZE (1<<6)
#define SHS_CHUNKWORDS (SHS_CHUNKSIZE/sizeof(USB32))
/* SHS_DIGESTSIZE is a the length of the digest as defined by the algorithm */
#define SHS_DIGESTSIZE (20)
#define SHS_DIGESTWORDS (SHS_DIGESTSIZE/sizeof(USB32))
/* SHS_LOW - where low 32 bits of 64 bit count is stored during final */
#define SHS_LOW 15
/* SHS_HIGH - where high 32 bits of 64 bit count is stored during final */
#define SHS_HIGH 14
/*
* The structure for storing SHS info
*
* We will assume that bit count is a multiple of 8.
*/
typedef struct {
USB32 digest[SHS_DIGESTWORDS]; /* message digest */
USB32 countLo; /* 64 bit count: bits 3-34 */
USB32 countHi; /* 64 bit count: bits 35-63 */
USB32 datalen; /* length of data in data */
USB32 data[SHS_CHUNKWORDS]; /* SHS chunk buffer */
} SHS_INFO;
/*
* SHSCOUNT(SHS_INFO*, USB32) - update the 64 bit count in an SHS_INFO
*
* We will count bytes and convert to bit count during the final
* transform. This assumes that the count is < 2^32.
*/
#define SHSCOUNT(shsinfo, count) { \
USB32 tmp_countLo; \
tmp_countLo = (shsinfo)->countLo; \
if (((shsinfo)->countLo += (count)) < tmp_countLo) { \
(shsinfo)->countHi++; \
} \
}
#endif /* !__SHS_H__ */
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