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Security of keys that are as long as the data
If both communicating sides end up with the same secret 3000-bit key, is it enough to XOR each byte of the messages with each byte of the secret key to make it secure?
Wikipedia says it is, but I ...
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What's a good security schema for many to many communication?
Assuming you have a "typical" group chat-room, with n participants connected together by a server (the server handles message routing).
Would be a good security schema which would allow for encrypted ...