github.com/refraction-networking/utls.rsaKeyAgreement.processClientKeyExchange (method, view implemented interface methods)

one use

	github.com/refraction-networking/utls (current package)
		key_agreement.go#L49: func (ka rsaKeyAgreement) processClientKeyExchange(config *Config, cert *Certificate, ckx *clientKeyExchangeMsg, version uint16) ([]byte, error) {