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Encryption for secure communication

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You can use the previously discussed encryption methods to securely encrypt and send private information, but they maybe too cumbersome to use if you only want to prevent eavesdropping while the data is in transit. If the information doesn't have to remain encrypted once it reaches its target, there's a far better approach: Perfect Forward Secrecy (PFS). PFS is designed for ongoing communication (like your web-browser communicating with a website over a browsing session, or a messaging application), it works in a very similar way to the previously discussed encryption methods, but it differs in that it generates a unique key-pair for every subsequent communication, this insuring that even in the unlikely event that an attacker can guess a key, they can that one message - leaving the rest of the communication session private and secure. 

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