Crypto.RSA: Cleaned up RSASSA-PSS API. It is now possible to get a PSS signature object from an RSA state by indexing it with "PSS". Eg Crypto.RSA.State rsa = ...; string(8bit) sign = rsa->PSS->pkcs_sign(message, hash); int(0..1) ok = rsa->PSS->pkcs_verify(message, hash, sign); Also adds a corresponding symbol "PKCS1_5" for the traditional (and default) PKCS#1 1.5 style signatures.