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Secure a J2ME Environment with JCE

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Bookmark and Share Implementing a customized security library is expensive and unsuitable for medium and small applications. The Java Cryptography Extension, while the accepted standard for these apps, brings up a host of other problems. This article analyzes those problems and demonstrates how to solve them.

In this article, we analyze the common issues associated with using JCE, the standard security library for J2SE, in a J2ME environment. We illustrate how to solve these problems step by step, including sample code, and show how to implement the AES (Advanced Encryption Standard) algorithm with JCE in a J2ME environment. For our working environment, we will use IBM® WebSphere® Studio Device Developer (Device Developer), Foundation Profile, and IBM JCE. However, because the tools and libraries we use conform to an open standard, you can apply the approach to all other kinds of development environments that adhere to J2ME and JCE standards.

To start, we'll review the two steps required in the standard JCE installation for J2SE. The first step is adding a JCE provider, such as the IBM JCE provider, into the java.security file. Listing 1 shows how.


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