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For krb5-1.7 all IA64 platforms are identified as little endian but
HP-UX is big endian.  It's causing the 1.7 arcfour string to key
function to use the wrong endian and it's resulting in
KRB5KDC_ERR_PREAUTH_FAILED errors.  The endian is also incorrect for
1.6.3 but its arcfour string to key function works anyway.  Here's what
I did to fix it for us:

 

Index: krb5/src/include/k5-platform.h

===================================================================

--- krb5/src/include/k5-platform.h           (revision 37170)

+++ krb5/src/include/k5-platform.h        (revision 37171)

@@ -476,10 +476,10 @@

    As far as I know, only PDP11 and ARM (which we don't handle here)

    have strange byte orders where an 8-byte value isn't laid out as

    either 12345678 or 87654321.  */

-# if defined(__i386__) || defined(_MIPSEL) || defined(__alpha__) ||
defined(__ia64__)

+# if defined(__i386__) || defined(_MIPSEL) || defined(__alpha__) ||
(defined(__ia64__) && !defined(__hpux))

 #  define K5_LE

 # endif

-# if defined(__hppa__) || defined(__rs6000__) || defined(__sparc__) ||
defined(_MIPSEB) || defined(__m68k__) || defined(__sparc64__) ||
defined(__ppc__) || defined(__ppc64__)

+# if defined(__hppa__) || defined(__rs6000__) || defined(__sparc__) ||
defined(_MIPSEB) || defined(__m68k__) || defined(__sparc64__) ||
defined(__ppc__) || defined(__ppc64__) || (defined(__hpux) &&
defined(__ia64))

 #  define K5_BE

 # endif

 #endif