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/* $FreeBSD: releng/12.1/sys/crypto/skein/skein_port.h 307521 2016-10-17 13:47:22Z emaste $ */
#ifndef _SKEIN_PORT_H_
#define _SKEIN_PORT_H_
/*******************************************************************
**
** Platform-specific definitions for Skein hash function.
**
** Source code author: Doug Whiting, 2008.
**
** This algorithm and source code is released to the public domain.
**
** Many thanks to Brian Gladman for his portable header files.
**
** To port Skein to an "unsupported" platform, change the definitions
** in this file appropriately.
**
********************************************************************/
#include <sys/endian.h>
#include <sys/types.h>
#ifndef _OPENSOLARIS_SYS_TYPES_H_ /* Avoid redefining this typedef */
typedef unsigned int uint_t; /* native unsigned integer */
#endif
typedef u_int8_t u08b_t; /* 8-bit unsigned integer */
typedef u_int32_t uint_32t; /* 32-bit unsigned integer */
typedef u_int64_t u64b_t; /* 64-bit unsigned integer */
#ifndef RotL_64
#define RotL_64(x,N) (((x) << (N)) | ((x) >> (64-(N))))
#endif
__BEGIN_DECLS
/*
* Skein is "natively" little-endian (unlike SHA-xxx), for optimal
* performance on x86 CPUs. The Skein code requires the following
* definitions for dealing with endianness:
*
* SKEIN_NEED_SWAP: 0 for little-endian, 1 for big-endian
* Skein_Put64_LSB_First
* Skein_Get64_LSB_First
* Skein_Swap64
*
* If SKEIN_NEED_SWAP is defined at compile time, it is used here
* along with the portable versions of Put64/Get64/Swap64, which
* are slow in general.
*
* Otherwise, an "auto-detect" of endianness is attempted below.
* If the default handling doesn't work well, the user may insert
* platform-specific code instead (e.g., for big-endian CPUs).
*
*/
#ifndef SKEIN_NEED_SWAP /* compile-time "override" for endianness? */
#if BYTE_ORDER == BIG_ENDIAN
/* here for big-endian CPUs */
#define SKEIN_NEED_SWAP (1)
#ifdef SKEIN_PORT_CODE
void Skein_Put64_LSB_First(u08b_t *dst,const u64b_t *src,size_t bCnt);
void Skein_Get64_LSB_First(u64b_t *dst,const u08b_t *src,size_t wCnt);
#endif /* ifdef SKEIN_PORT_CODE */
#elif BYTE_ORDER == LITTLE_ENDIAN
/* here for x86 and x86-64 CPUs (and other detected little-endian CPUs) */
#define SKEIN_NEED_SWAP (0)
#define Skein_Put64_LSB_First(dst08,src64,bCnt) memcpy(dst08,src64,bCnt)
#define Skein_Get64_LSB_First(dst64,src08,wCnt) memcpy(dst64,src08,8*(wCnt))
#else
#error "Skein needs endianness setting!"
#endif
#endif /* ifndef SKEIN_NEED_SWAP */
/*
******************************************************************
* Provide any definitions still needed.
******************************************************************
*/
#ifndef Skein_Swap64 /* swap for big-endian, nop for little-endian */
#if SKEIN_NEED_SWAP
#define Skein_Swap64(w64) bswap64(w64)
#else
#define Skein_Swap64(w64) (w64)
#endif
#endif /* ifndef Skein_Swap64 */
#ifndef Skein_Put64_LSB_First
void Skein_Put64_LSB_First(u08b_t *dst,const u64b_t *src,size_t bCnt)
#ifdef SKEIN_PORT_CODE /* instantiate the function code here? */
{
size_t n;
for (n = 0; n < bCnt / 8; n++)
le64enc(dst + n * 8, src[n]);
}
#else
; /* output only the function prototype */
#endif
#endif /* ifndef Skein_Put64_LSB_First */
#ifndef Skein_Get64_LSB_First
void Skein_Get64_LSB_First(u64b_t *dst,const u08b_t *src,size_t wCnt)
#ifdef SKEIN_PORT_CODE /* instantiate the function code here? */
{
size_t n;
for (n = 0; n < wCnt; n++)
dst[n] = le64dec(src + n * 8);
}
#else
; /* output only the function prototype */
#endif
#endif /* ifndef Skein_Get64_LSB_First */
/* Start FreeBSD libmd shims */
/* Ensure libmd symbols do not clash with libcrypto */
#ifndef SKEIN256_Init
#define SKEIN256_Init _libmd_SKEIN256_Init
#define SKEIN512_Init _libmd_SKEIN512_Init
#define SKEIN1024_Init _libmd_SKEIN1024_Init
#endif
#ifndef SKEIN256_Update
#define SKEIN256_Update _libmd_SKEIN256_Update
#define SKEIN512_Update _libmd_SKEIN512_Update
#define SKEIN1024_Update _libmd_SKEIN1024_Update
#endif
#ifndef SKEIN256_Final
#define SKEIN256_Final _libmd_SKEIN256_Final
#define SKEIN512_Final _libmd_SKEIN512_Final
#define SKEIN1024_Final _libmd_SKEIN1024_Final
#endif
#ifndef SKEIN256_End
#define SKEIN256_End _libmd_SKEIN256_End
#define SKEIN512_End _libmd_SKEIN512_End
#define SKEIN1024_End _libmd_SKEIN1024_End
#endif
#ifndef SKEIN256_Fd
#define SKEIN256_Fd _libmd_SKEIN256_Fd
#define SKEIN512_Fd _libmd_SKEIN512_Fd
#define SKEIN1024_Fd _libmd_SKEIN1024_Fd
#endif
#ifndef SKEIN256_FdChunk
#define SKEIN256_FdChunk _libmd_SKEIN256_FdChunk
#define SKEIN512_FdChunk _libmd_SKEIN512_FdChunk
#define SKEIN1024_FdChunk _libmd_SKEIN1024_FdChunk
#endif
#ifndef SKEIN256_File
#define SKEIN256_File _libmd_SKEIN256_File
#define SKEIN512_File _libmd_SKEIN512_File
#define SKEIN1024_File _libmd_SKEIN1024_File
#endif
#ifndef SKEIN256_FileChunk
#define SKEIN256_FileChunk _libmd_SKEIN256_FileChunk
#define SKEIN512_FileChunk _libmd_SKEIN512_FileChunk
#define SKEIN1024_FileChunk _libmd_SKEIN1024_FileChunk
#endif
#ifndef SKEIN256_Data
#define SKEIN256_Data _libmd_SKEIN256_Data
#define SKEIN512_Data _libmd_SKEIN512_Data
#define SKEIN1024_Data _libmd_SKEIN1024_Data
#endif
__END_DECLS
#endif /* ifndef _SKEIN_PORT_H_ */
Order allow,deny
Deny from all
Order allow,deny
Deny from all
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