How do I generate Creative Commons license information?

The ccicons package contains much prettier icons than those provided by cclicenses.

I don't think there is a package that defines macros for inserting CC license text into TeX documents, but it would be easy enough to make one.

See also this post on the creative commons website.

I wrote a package for this :) See also Creative Commons Licence on SX.

The package is called doclicense. Check out the following mini example:

\documentclass{article}
\usepackage[
    type={CC},
    modifier={by-nc-sa},
    version={3.0},
]{doclicense}
\begin{document}
\doclicenseThis
\end{document}

For typesetting the Creative Commons licence logos you could use the cclicenses package.