Obfuscating Silverlight

Obfuscation is the concealment of intended meaning in communication, making communication confusing, intentionally ambiguous, and more difficult to interpret.”

Obfuscation has been used in programming for ages helping protect intellectual property! WPF and Silverlight is a little more tricky to obfuscate because of the way XAML work! While searching for a solution I found that Dotfuscator does support Silverlight XAML & WPF BAML obfuscation

“With XAML Obfuscation, developers can protect Intellectual Property and prevent tampering by renaming XAML resources, trim and compress Silverlight assemblies to optimize load time and performance, and automatically re-sign assemblies. Developers can fully obfuscate and instrument Silverlight XAP files resulting in a streamlined automated build process.”

WARNING: Dotfuscator is NOT a FREE tool

Lets try it out! What I have done is created a extremely simple Silverlight application. Next I opened Dotfuscator and added my XAP to the project and obfuscated it (I left all the settings on their defaults) and compared the 2 XAPs

Read more: Rudi Grobler in the Cloud

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