Off The Record Messaging Being A Cryptographic Protocol

2229 Words Dec 19th, 2016 9 Pages
INTRODUCTION

Off The Record Messaging being a cryptographic protocol is the most commonly used and famous components of web systems. It works in the way like when two people chat with each other, new encryption keys are created and destroyed. The trend of instant messaging has developed since 1995. There is a great property of OTR i.e. ‘plausible deniability’ which states that after the chat among any two people is ended, a certain key (HMAC) is made public, which makes it impossible to prove that the messages were not gorged by someone else. Off the record messaging makes our conversations confidential. There are two separate conventions for informing secure content. First, it builds up a safe session on top of the short message service using a common mystery. The second one is utilized to build up that mutual mystery. OTR provides security by the following:-
 Chats Encryption
 Proving you that the person with whom you are chatting is really that person.
 Not granting permission to server to access the conversations.
OTR uses forward secrecy. It saves our messages from being decrypted by practising ‘perfect forward secrecy’. It means that you have secrecy today even if your keys gets comprised in the future. It uses the concept of forward secrecy by using a different key for every new session and that key is not stored when the session is over.
OTR is just PGP’s (Pretty Good Privacy). PGP was designed to provide…
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