I'm not quite sure whether irreversible encryption is a thing in this context (its sometimes used to talk about e.g. password storage, but I think that's a very

I'm not quite sure whether irreversible encryption is a thing in this context (its sometimes used to talk about e.g. password storage, but I think that's a very different use-case), so I'll sally in with an interesting tangent: https://en.wikipedia.org/wiki/Homomorphic_encryption https://en.wikipedia.org/wiki/Homomorphic_encryption Homomorphic encryption is a form of encryption that allows computation on ciphertexts, generating an encrypted result which, when decrypted, matches the result of the operations as if they had been performed on the plaintext. Homomorphic encryption can be used for secure outsourced computation ...