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Forward secrecy and user anonymity are provided in the WTLS for the wireless Internet communications. Forward secrecy can be built by using Diffie-Hellman key agreement with random numbers in the Hello messages, and user anonymity by employing the signcryption scheme to the ClientKeyExchange and CertificateVerify procedure. In addition to these features, the modified WTLS handshake protocol has mutual authentication and key agreement against man-in-the-middle attacks. The resulting security features, bandwidth efficiency, and computational load are analyzed in comparison with the existing WTLS.