I found a problem with DigitalSignatureAlgorithm>>#initRandomNonInteractively. It is grabbing randomBits from the SoundSystem, but I may not have that installed. It gave me the same bits repeatedly. I modified DigitalSignatureAlgorithm>>#initRandomNonInteractively to not rely on the SoundSystem and instead use SecureRandom. This is published in the Cryptography repository.
Rob