End to End Encrypted Messaging Application Using ORDEX

An end-to-end encrypted chatting application focuses on securely transmitting sensitive information. It prevents the intrusion of malicious parties with any ill intent. It is especially needed in organizations where employees exchange messages which may contain trade secrets. This paper discusses the use of OR Diffie Hellman Key Exchange (ORDEX) algorithm to transmit messages securely in chatting applications. Usually, there are multiple key exchanges and layers of security which slows down the application, to avoid this a faster key exchange algorithm is proposed which does not compromise on security. This paper proposes a key exchange algorithm which is a combination of ORDEX algorithm and Extended Triple Diffie Hellman (X3DH) [2] along with Double Ratchet [3]. Advanced Encryption Standard (AES) [1] encryption is used to encrypt the messages. The proposed solution is thousand times faster than applications using Elliptic-curve Diffie–Hellman (ECDH) [4] key exchange algorithm.