A tip for anyone using this as a plugin for Pidgin: generating the keys usually takes a lot of processing power, and needs to be done once per account in Pidgin. The generating process triggers the first time you start messaging someone that also uses OTR with that account, which is often an inconvenient time (as you don't always know they use OTR beforehand). You can trigger the key-generation for an account via the plugin preferences of OTR, that way you can get that part done while you're not chatting.