sun-jdk-1.5.0.07 has it, it somehow went missing in -r1. Please put it back.
Created attachment 92878 [details, diff] Patch against sun-jdk-1.5.0.07-r1.ebuild Actually it's a tricky thing to do because sun-jdk now uses DLJ distfiles that can be fetched by emerge itself, while JCE zipfile can't be. And AFAIK portage isn't able to mix this in SRC_URI for one ebuild elegantly... So there has to be a special ebuild for JCE (which is already in java-experimental overlay so I won't attach it here), and JDK symlinks into its files. My patch makes sun-jdk to use this sun-jce-bin ebuild, the same way as (now obsolete) sun-jdk-bin ebuild (which is also in that overlay) does.
JCE added back to 1.5.0.7-r2. Thanks for reporting and doing the legwork.