SQLCipher is an SQLite extension that provides transparent 256-bit AES
encryption of database files. Pages are encrypted before being written
to disk and are decrypted when read back. Due to the small footprint
and great performance it's ideal for protecting embedded application
databases and is well suited for mobile development.

SQLCipher was initially developed by Stephen Lombardo at Zetetic LLC
(sjlombardo@zetetic.net) as the encrypted database layer for Strip,
an iPhone data vault and password manager (http://getstrip.com).

TCL extension (libtclsqlite3.so) can be enabled with:

  WITH_TCL=yes ./sqlcipher.SlackBuild

Note however, it will clobber the stock sqlite library.
