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Bilal Siddiqui

Bilal Siddiqui is an XML consultant. After graduating in Electronics Engineering from the University of Engineering and Technology, Lahore, in 1995, he began designing software solutions for industrial control systems. Later he turned to XML and used his experience programming in C++ to build Web- and WAP-based XML processing tools, server-side parsing solutions, and service applications.

Articles by this author

Signing Messages with XSS4J

Bilal Siddiqui continues his series on Java Web Services Security, covering signing XML messages with the IBM XSS4J toolkit.

Implementing XML Encryption in Java

In the third of his series on Web Services Security for Java, Bilal Siddiqui joins together the pieces and adds XML encryption support to his WSS4J project.

Using XSS4J for XML Encryption

In the second part of his series on implementing web services security, Bilal Siddiqui introduces IBM alphaWorks' XML Security Suite for Java.

Web Services Security for Java

This first article in a new column by Bilal Siddiqui embarks upon deploying web services security. Siddiqui introduces the use cases for a Java web service security API, and begins its implementation.

Web Services Security, Part 4

In this fourth and final part of our series on web services security, we put all the pieces together to demonstrate how the XML Signature, XML encryption, Web Services Security, and SAML specifications work together.

Web Services Security, Part 3

This article discusses XML-based authentication and the sharing of authentication information across different applications, known as Single Sign-on. The Security Assertions Markup Language (SAML) from OASIS provides expression in XML of authentication information.

Web Services Security, Part 2

In the second part of his series on web services security technology, Bilal Siddiqui discusses the role and function of digital signatures and encryption.

Web Services Security, Part 1

The first in a four part series discussing major issues related to securing web services and covering the emerging XML-based security standards from the W3C and OASIS.

XML Canonicalization, Part 2

In the second and final article of his series on XML Canonicalization, Bilal Siddiqui shows how to cope with documents that have CDATA sections, processing instructions, external entity references and comments.

XML Canonicalization

Bilal Siddiqui explains the process of canonicalizing XML documents, useful in determining the logical equivalence of documents in order to secure XML exchanges.