Datagrams on hexproof

Companion to An Ok/Err Result Is a Bleichenbacher Oracle.

A function returns Ok on valid padding and Err on invalid padding.

A MetaMask Android user enters their password, the wallet unlocks, they put the phone down.

A notification appears on the victim’s locked phone with whatever text the abuser typed.

There is an app on Google Play called Lock Screen Protector (com.lsdroid.lsp).

Every AI coding tool solves the same fundamental problem: fitting the right information into a fixed-size context window so an LLM can write correct code.