http://tortradedolnv35gcqys5qsi5yqx6le5zbbmtkyvsgvhfakb5khffcid.onion/faq
For more information please visit TorTrade’s Guide to PGP Authentication. What if I don’t have a PGP key? Can I still use TorTrade? Yes, you can still use TorTrade without a PGP key. However, if you want to encrypt your communications and trade details but are unfamiliar with PGP, check out TorTrade’s Guide to PGP.