Security in Mobile Communication Using Digital Signature with WAP

As mobile networks expand their bandwidth, mobile phones, as with any other Internet device, become substantially exposed to Internet security vulnerabilities. Public key cryptography is a primary concept in implementing wireless device security. This paper describes the applicative use of PKI in current and future mobile phone applications, and shows how the standard-compliant implementation of cryptographic algorithms, enables wireless devices to become PKI-enabled. The Wireless Application Protocol is a leading technology for companies trying to unlock the value of the Mobile Internet. The WAP model introduces a Gateway that translates between WAP and Internet protocols. This Gateway is typically located at the site of the mobile operator, although sometimes it may be run by an application service provider or enterprise. WAP enables such capability via use of a crypto API, referred to as the WMLScript Crypto API. WMLScript is a simple script language that allows client-side processing, and instructs the client device to invoke application-level functions.