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Diffstat (limited to 'sys/crypto/skein/skein_port.h')
| -rw-r--r-- | sys/crypto/skein/skein_port.h | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/sys/crypto/skein/skein_port.h b/sys/crypto/skein/skein_port.h new file mode 100644 index 0000000..7025a51 --- /dev/null +++ b/sys/crypto/skein/skein_port.h @@ -0,0 +1,158 @@ +/* $FreeBSD$ */ +#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_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_ */ |
