Well, if it was just named opaque that would be confusing because that's a word meaning the opposite of transparent.
Naming things is hard for most people. Where some people are imaginative enough to name their stream cipher ChaCha20, the best you can expect from many engineers is something like PADMÉ (a padding scheme).
Naming things is hard for most people. Where some people are imaginative enough to name their stream cipher ChaCha20, the best you can expect from many engineers is something like PADMÉ (a padding scheme).