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Would homomorphic encryption or any other privacy enhancing technologies allow for a middle ground here?

Would allow you to scan the encrypted messages for incriminating or illegal content when there is reason to believe a specific account is doing something illegal (could require court approval, then a further process for full decrypted messages as part of court proceedings)



In one-key scheme you, the encryptor, would also have to encrypt the naughty word list, allowing you to cheat, so it will not be allowed.


Ahh interesting. So you could not have one key encrypting the messages than a separate org-wide key encrypting the naughty word list. That makes sense. Thanks.


I think there are some multi-key schemes but they are much more expensive and very rarely used, I don't know much about them




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