diff options
Diffstat (limited to 'Reference_Implementation/skein_port.h')
| -rw-r--r-- | Reference_Implementation/skein_port.h | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/Reference_Implementation/skein_port.h b/Reference_Implementation/skein_port.h new file mode 100644 index 0000000000000..e0dcc85bdc624 --- /dev/null +++ b/Reference_Implementation/skein_port.h @@ -0,0 +1,44 @@ +#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, which +** have been modified slightly here, to handle a few more platforms. +** +** To port Skein to an "unsupported" platform, change the definitions +** in this file appropriately. +** +********************************************************************/ + +#include "brg_types.h" /* get integer type definitions */ + +typedef unsigned int uint_t; /* native unsigned integer */ +typedef uint_8t u08b_t; /* 8-bit unsigned integer */ +typedef uint_64t u64b_t; /* 64-bit unsigned integer */ + +/* + * 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_Put64_LSB_First + * Skein_Get64_LSB_First + * Skein_Swap64 + * + * In the reference code, these functions are implemented in a + * very portable (and thus slow) fashion, for clarity. See the file + * "skein_port.h" in the Optimized_Code directory for ways to make + * these functions fast(er) on x86 platforms. + */ + +u64b_t Skein_Swap64(u64b_t w64); +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 /* ifndef _SKEIN_PORT_H_ */ |