8a99cb29d1
This change adds the option to calculate (EC)DSA nonces by hashing the message and private key along with entropy to avoid leaking the private key if the PRNG fails.
The stuff in here is based on patches supplied to me by Steven Schoch <schoch@sheba.arc.nasa.gov> to do DSS. I have since modified a them a little but a debt of gratitude is due for doing the initial work.