While discussing the PSF contrib docs with Martin, we came across a possible violation of the US export regulations: According to the BXA web-site, all crypto code with more than 56 bit keys, has to be regsitered with the BXA. rotor uses 80 bit keys. Here's the application we would need to file: http://www.bxa.doc.gov/Encryption/PubAvailEncSourceCodeNofify.html The various sections referenced in that document can be found here: http://w3.access.gpo.gov/bxa/ear/ear_data.html With the definition of terms at: http://w3.access.gpo.gov/bxa/ear/txt/772.txt and a chart of available license exceptions at (open source software is covered under TSU): http://www.bxa.doc.gov/Encryption/lechart1.html -- Marc-Andre Lemburg CEO eGenix.com Software GmbH ______________________________________________________________________ Company & Consulting: http://www.egenix.com/ Python Software: http://www.egenix.com/files/python/