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Signal is a new security protocol and accompanying app that provides end-to-end encryption for instant messaging. The core protocol has recently been adopted by WhatsApp, Facebook Messenger, and Google Allo among many others, the first two of these have at least 1 billion active users. Signal includes several uncommon security properties (such as "future secrecy" or "post-compromise...
The rapid development of instant messaging changes the people's communication, collaboration and entertainment manner radically. Unfortunately, the existing instant messaging technology does not provide built-in support for security features. The security problem of instant messaging system has aroused widespread concern in both academia and industry. In this paper, we proposed a new and secure instant...
We propose the Pandora Messaging, an enhanced secure instant messaging architecture which is equipped with a self-message-destructing feature for sensitive personal information applications in a mobile environment. We design the Pandora Message Encryption and Exchange Scheme and the format of a self-destructible message to show how to exchange these messages atop the existing instant messaging service...
A secure cross-platform instant messaging software based on de-centralized structure model is designed and implemented. This software establishes a p2p overlay network without any central node, each node in this overlay network is called a peer, identified with an UUID, every connection between two peers in the overlay network is completely peer to peer. Two peers who trust each other utilize asymmetrical...
SIP-based instant messaging (IM) is currently a quite hot issue in the SIP world. Two approaches, pager-mode IM and session-mode IM, have been explored for implementation. This paper provides an in-depth analysis of the first method through an example, and makes improvement to the second by presenting specific signaling and media messages. Solutions to security problems are also discussed in detail...
Mobile ad hoc network (MANET) is suitable for providing a communication platform for resource sharing or instant messaging to people in public places where no communication infrastructure exists. Like many other applications of MANET, the application over the communication platform has non-trivial security requirements due to the unique features of MANET (e.g. the open nature of wireless links and...
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