Dunno what the policy on posting stuff like this is, but apparently the Vita cracks are out. I'm not going to post a link to where you can download it (5 seconds in Google can do that for you), but here's what the crack entails:
"Changelog: Vita Tools v1.06
- Added ungpkg to allow to unpack game packages.
- Fixed tools.c to allow to search ps vita keys in the right folder.
- Removed pkg_reader. useless
About: Vita Keys
- These files contain the keys necessary for encrypting/decrypting/signing files for the PS Vita.
- They are compatible with deroad's vitatools.
- Copy these files to your ~/.vita/ or %userprofile%\vitakeys directory.
- Initial files were created by Deroad."