When you install the Solaris 10 7/07 HW release and you wish to access longer key lengths for use with data encryption, you must use the Solaris Data Encryption Supplement packages that corresponds to Solaris 10. The supplement is delivered in the SUNWcry and SUNWcryr packages that are available for download from:
To bring these packages up to the same patch level as your current update, you will have to install the appropriate patch:
Patch ID 118562-05 or a later revision for SPARC based systems
Patch ID 118563-04 or a later revision for x86 based systems
To determine your current patch level, use showrev -p.