There is no such thing as "#lawful#access". Encryption is #math. There is no math that the "good guys" can do but which cannot be done by the "bad guys".
Anyone who suggests different is #lying, to #spy on you.
\o/ It seems my proposal has been accepted for funding by NLNet & NGI0 Entrust, there's gonna be a lot more OPRF based free software be available soon. #klutshnik#opaque#sphinx#oprf#nlnet#ngi0