Using Steganography to Improve Hash Functions' Collision Resistance

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Using Steganography to Improve Hash Functions' Collision Resistance
Lately, hash function security has received increased attention. Especially after the recent attacks that were presented for SHA-1 and MD5, the need for a new and more robust hash function has become imperative. Even though many solutions have been proposed as replacements, the transition to a new function could be costly and complex. In this paper, we introduce a mode of operation that can be applied to any existing or future hash function in order to improve its collision resistance. In particular, we use steganography, the art of hiding a message into another message, to create a scheme, named Σ-Hash, which enforces the security of hashing algorithms. We will demonstrate how, apart from hash function security, Σ-Hash can also be used for securing Open Source code from tampering attacks and other applications.
Emmanouel Kellinis, Konstantinos Papapanagiotou
Added 30 Oct 2010
Updated 30 Oct 2010
Type Conference
Year 2007
Authors Emmanouel Kellinis, Konstantinos Papapanagiotou
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