Category Archives: Cryptography

Introduction to Steganography and Steganalysis

By Hovanes | Published: May 22, 2009
While visiting the American University of Armenia today, I stumbled upon a talk by Dr. Sos Agaian on digital signal processing and steganalysis. I have been interested in this area for years and Dr. Agaian’s talk gave me insight on some new and interesting research into this area while providing me with motivation to share [...]
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New attack against SHA-1

By Hovanes | Published: April 29, 2009
According to researchers the complexity of the SHA-1 one-way hash function has been significantly reduced. Exploiting this weakness for practical purposes is now possible for a “well-funded organization.” While the research remains unpublished this revelation underscores the need for us to move away from SHA-1 and related algorithms. One-way cryptographic hash functions have many uses in [...]
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