Time: Tuesday Oct 21st at 4pm Place: Gunness Student Center Conference Room. Refreshments will be served at 3:45pm. Title: Hash-based Signatures Speaker: Thomas Eisenbarth, Visiting from Ruhr University Bochum, Germany Abstract: Digital signatures are one of the main application scenarios for modern cryptography, e.g., for digital certificates on the Internet or banking cards. The most widely used algorithms for digital signatures, RSA and Elliptic Curve Digital Signature Algorithm (ECDSA), are computationally expensive, making them very challenging for many embedded applications such as smart cards or RFID tags. Hence the need for better methods is highly visible. One alternative to RSA and ECDSA is the Merkle signature scheme which provides digital signatures using hash functions only. Hash functions are orders of magnitude more efficient than the the number-theoretical based RSA and elliptic curve schemes. After a general introduction to hash-based signatures, the strengths and weaknesses of the Merkle signature scheme are highlighted. It will be shown that hash-based signatures are a promising alternative to the well-established signature schemes, especially for embedded systems. Bio: Thomas Eisenbarth is a third year Ph.D. student at the Department of Electrical Engineering at Ruhr University Bochum. He works as a research assistant with the embedded security group of the Horst Goertz Institute for IT-Security and is currently a visiting researcher at UMass Amherst. His research interests include embedded security, efficient implementation of cryptographic algorithms, and physical security. Thomas Eisenbarth studied electrical engineering and computer science at Ruhr-Universitaet Bochum and Technical University of Navarra. |
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