ClientHello.getVersion()
RecordPreview.getContentLimit()
SecurityParameters.getPRFAlgorithm()
TlsUtils.checkPeerSigAlgs(TlsContext, TlsCertificate[])
TlsUtils.isValidVersionForCipherSuite(int, ProtocolVersion)
TlsUtils.PRF(SecurityParameters, TlsSecret, String, byte[], int)