Originally introduced way back in 1992 by Whitfield Diffie (the key-exchange co-inventor), Paul von Ooschot and Michael Weiner, PFS describes a session-based station-to-station protocol. PFS is specifically designed to address this problem. For example Microsoft's email service has historically relied on a single master key.īut it doesn't have be like this. If a private key is compromised all data - past, present or future - encrypted with this key can be viewed in plain text. If you'd like to understand the nitty gritty technical details of key exchange they are expertly explained in this Wiki entry.ĭespite widespread adoption the key-exchange scenario does have a flaw. A system that relies on a pair of mathematically related keys. So, what exactly is Perfect Forward Security (PFS)? And how does it help secure our data?Īt its core PFS is based on the highly regarded and well proven public-key encryption system. High on the list is the introduction of an encryption strategy called ' Perfect Forward Security'. Many have decided to significantly enhance and extend data security. Major technology organisations felt compelled to conduct a top to bottom review of existing security systems. And the public aren't at all happy with the alleged capture, storage and analysis of their communications either. Material surrounding the NSA's PRISM and MUSCULAR programmes, exposed in the Edward Snowdon documents, have generated much consternation in the IT industry.
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