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by prolde 4429 days ago
Encryption can be done in a matter where the private keys are stored in the user's end, making it far harder for the likes of the NSA to break the encryption.

One example of this is Jitsi's implementation of Off The Recording chatting. When using an XMPP server through Jitsi, the NSA may be able to read the cipher text sent but not the plaintext because the keys are stored on the chat participants computers. Not even the chat server owners know the chat plaintext.