Off The Record Protocol (OTR)
Off The Record Protocol (OTR) is one of the emerging protocols today. It is becoming more and more popular amongst Internet Messenger Services by providing a service similar to a conversation by two people. Internet Messenger Applications such as Pidgin has already implemented such a plugin fo the application and other messenger services are already on the move with implementing the feature. OTR provides the two parties to have a conversation between them by providing the following features. i) Encryption : Messages can be read by only the two parties involved. ii) Authentication : Lets each parties know that they are chatting with the person who they think they are. In simpler terms, this features prevents forging by a third party by imitating the other person. iii) Deniability(Repudiability) : This is a controversial term. We are very much used with the term 'Non Repudiability' when we talk about Computer Security. But here, we specifically allow repudiability to occur. iv) P...