Hi, there are alot a different encryption schemes out there; but I came across one recently which caught my attention as a new "useful feature"...deniable(subpoena-proof)encryption. See it at twocrypt

2c2 is a simple symmetric file encryption utility. It comes with an interesting optional feature - it is capable to embed an additional file within an encrypted data. This is done in a way that cannot be detected without knowing the passphrase protecting the "hidden" file, even if the password for the primary file is disclosed. The design is such that the fact of using this method alone does not constitute a credible evidence of data hiding (IANALBMSUTDO). This kind of encryption is also called "subpoena-proof" or "deniable". Now that the courts can force you to reveal the passphrase to an encrypted file, this allows you to do that, yet still have a secret file, with plausible deniability.

That would be a useful feature in your new crypto algorithm. (Please destroy this node after reading :-))