Estimated signature size calculation for ECDsa and RSA may be incorrect #67059
Description
Based on recent discussions with @bartonjs where I needed to also obtain an estimated size. As per Jeremy, ECDsa should use 2 * ((KeySize + 7) / 8) and for RSA (KeySize + 7) / 8.
What is currently being used is this:
and this:
For ECDsa and RSA respectively.
It is not a bug as the code handles the case where the signature buffer wasn't big enough but I think we should be consistent on how to calculate it, maybe even consider adding a GetSignatureSize() API.