STM32U585 PKA -- ECC Scalar Multiplication - undocumented errors?
[EDIT: Question below is about STM32U5 PKA, but I see the STM32L5 Cube S/W has an example "PKA_ECCscalarMultiplication" that is probably similar to what I'm trying to do. Not sure how similar PKAs are on these MCUs but I bet they are either identical...