[blintz]

Technically, there are rate-1 homomorphic encryption schemes, where ‘rate’ refers to the size ratio between the plaintext and the ciphertext. They’re not super practical, so your general point stands.

[reliabilityguy]

Oh, interesting. Can you point to a paper about one?

[blintz]

This is a good one: https://eprint.iacr.org/2019/720.pdf

[reliabilityguy]

Thank you, I’ll give it a read.