By popular demand, we've re-licensed our pure-Python RSA module under the European Union Public Licence (EUPL). This new licence is the first open source license to be released by an international governing body.
RSA version 1.2 is code-wise the same as the previous version - the only difference is the new license. It is also still compatible the GPL. Actually, the module is now dual-licensed, under both the GPL and the EUPL. Take your pick, and use which one suits you best.