Differential D6166 Diff 17049 sys/crypto/skein/skein_block.c

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sys/crypto/skein/skein_block.c

	/***********************************************************************			/***********************************************************************
	**			**
	** Implementation of the Skein block functions.			** Implementation of the Skein block functions.
	**			**
	** Source code author: Doug Whiting, 2008.			** Source code author: Doug Whiting, 2008.
	**			**
	** This algorithm and source code is released to the public domain.			** This algorithm and source code is released to the public domain.
	**			**
	** Compile-time switches:			** Compile-time switches:
	**			**
	** SKEIN_USE_ASM -- set bits (256/512/1024) to select which			** SKEIN_USE_ASM -- set bits (256/512/1024) to select which
	** versions use ASM code for block processing			** versions use ASM code for block processing
	** [default: use C for all block sizes]			** [default: use C for all block sizes]
	**			**
	************************************************************************/			************************************************************************/

				#include <sys/cdefs.h>
				__FBSDID("$FreeBSD$");

				#include <sys/endian.h>
				#include <sys/types.h>

				#ifdef _KERNEL
				#include <sys/systm.h>
				#else
	#include <string.h>			#include <string.h>
				#endif

	#include "skein.h"			#include "skein.h"

	#ifndef SKEIN_USE_ASM			#ifndef SKEIN_USE_ASM
	#define SKEIN_USE_ASM (0) /* default is all C code (no ASM) */			#define SKEIN_USE_ASM (0) /* default is all C code (no ASM) */
	#endif			#endif

	#ifndef SKEIN_LOOP			#ifndef SKEIN_LOOP
	#define SKEIN_LOOP 001 /* default: unroll 256 and 512, but not 1024 */			#define SKEIN_LOOP 001 /* default: unroll 256 and 512, but not 1024 */
	#endif			#endif

	#define BLK_BITS (WCNT64) / some useful definitions for code here */			#define BLK_BITS (WCNT64) / some useful definitions for code here */
	#define KW_TWK_BASE (0)			#define KW_TWK_BASE (0)
	#define KW_KEY_BASE (3)			#define KW_KEY_BASE (3)
	#define ks (kw + KW_KEY_BASE)			#define ks (kw + KW_KEY_BASE)
	#define ts (kw + KW_TWK_BASE)			#define ts (kw + KW_TWK_BASE)

	#ifdef SKEIN_DEBUG			#ifdef SKEIN_DEBUG
	#define DebugSaveTweak(ctx) { ctx->h.T[0] = ts[0]; ctx->h.T[1] = ts[1]; }			#define DebugSaveTweak(ctx) { ctx->h.T[0] = ts[0]; ctx->h.T[1] = ts[1]; }
	#else			#else
	#define DebugSaveTweak(ctx)			#define DebugSaveTweak(ctx)
	#endif			#endif

				/*****************************************************************/
				/* functions to process blkCnt (nonzero) full block(s) of data. */
				void Skein_256_Process_Block(Skein_256_Ctxt_t ctx,const u08b_t blkPtr,size_t blkCnt,size_t byteCntAdd);
				void Skein_512_Process_Block(Skein_512_Ctxt_t ctx,const u08b_t blkPtr,size_t blkCnt,size_t byteCntAdd);
				void Skein1024_Process_Block(Skein1024_Ctxt_t ctx,const u08b_t blkPtr,size_t blkCnt,size_t byteCntAdd);

	/*************************** Skein_256 ****************************/			/*************************** Skein_256 ****************************/
	#if !(SKEIN_USE_ASM & 256)			#if !(SKEIN_USE_ASM & 256)
	void Skein_256_Process_Block(Skein_256_Ctxt_t ctx,const u08b_t blkPtr,size_t blkCnt,size_t byteCntAdd)			void Skein_256_Process_Block(Skein_256_Ctxt_t ctx,const u08b_t blkPtr,size_t blkCnt,size_t byteCntAdd)
	{ /* do it in C */			{ /* do it in C */
	enum			enum
	{			{
	WCNT = SKEIN_256_STATE_WORDS			WCNT = SKEIN_256_STATE_WORDS
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