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For questions about encryption and decryption of data, which is the process of encoding data in such a way that adversaries cannot read or tamper with it. Technical questions about encryption (e.g. how does algorithm X work?) are off-topic but might be in scope for our sister sites about Information Security and/or Cryptography.

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Designing a privnote clone - security considerations

Server being able to decrypt messages (I'd like this to be entirely immune to logging of any sort and all encryption/decryption happening clientside) defeats the entire purpose. … messages have a TTL, Redis seems an ideal choice) What happens if a malicious actor gains access somehow (without knowing the decryption keys which should be generated on the spot and only just once) What encryption
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