hi,all
i meet a problem.when i plant the DES to my voip gateway for the purpose of
snmpv3 support, it shows decryption error.
My gateway is running on vxworks and processor is mips32.
i guess it should be something wrong with architecture concerned choice, such
as big(little)endian?
in md32_common.h
how should i choose the ROTATE ?
/*
* Engage compiler specific rotate intrinsic function if available.
*/
#undef ROTATE
#ifndef PEDANTIC
# if defined(_MSC_VER) || defined(__ICC)
# define ROTATE(a,n) _lrotl(a,n)
# elif defined(__MWERKS__)
# if defined(__POWERPC__)
# define ROTATE(a,n) __rlwinm(a,n,0,31)
# elif defined(__MC68K__)
/* Motorola specific tweak. <[EMAIL PROTECTED]> */
# define ROTATE(a,n) ( n<24 ? __rol(a,n) : __ror(a,32-n) )
# else
#ifndef ROTATE
#define ROTATE(a,n) (((a)>>(n))+((a)<<(32-(n))))
#endif
in opensslconf.h i choose newer mips,but makes error.
#if defined( sun ) /* Newer Sparc's */
# define DES_PTR
# define DES_RISC1
# define DES_UNROLL
#elif defined( __ultrix ) /* Older MIPS */
# define DES_PTR
# define DES_RISC2
# define DES_UNROLL
#elif defined( __osf1__ ) /* Alpha */
# define DES_PTR
# define DES_RISC2
#elif defined ( _AIX ) /* RS6000 */
/* Unknown */
#elif defined( __hpux ) /* HP-PA */
/* Unknown */
#elif defined( __aux ) /* 68K */
/* Unknown */
#elif defined( __dgux ) /* 88K (but P6 in latest boxes) */
# define DES_UNROLL
#elif defined( __sgi ) /* Newer MIPS */
# define DES_PTR
# define DES_RISC2
# define DES_UNROLL
#elif defined(i386) || defined(__i386__) /* x86 boxes, should be gcc */
# define DES_PTR
# define DES_RISC1
# define DES_UNROLL
#endif /* Systems-specific speed defines */
#endif
thank you in advance for your help
zhangyao
2007-07-20
