jsenc is mostly patches and extensions to CryptoJS and also some test scripts to provide demos for their usage.
On the link above you can see the scripts online (i.e. the way they should look like if you have downloaded them), updated nightly from this git repository (master branch).
- Download URL: http://crypto-js.googlecode.com/files/CryptoJS%20v3.0.2.zip
- Project URL: http://code.google.com/p/crypto-js/
- Extract to: src/crypto-js/
Download and extract CryptoJS to src/crypto-js directory.
I have tested with version 3.0.2.