Meet Dr. David W. Kravitz

Dr. David W. Kravitz joined Motorola in February, 2005 as a Fellow of the Technical Staff in the Security Technology Lab. He is currently specializing in Digital Rights Management (DRM). His previous experience in DRM includes positions as Chief Scientist at Wave Systems Corp. and Chief Scientist, Security Systems, at Digital Video Express (DIVX). Prior to that, he worked in Electronic Commerce as Vice President at CertCo (formerly Bankers Trust Electronic Commerce), and Senior Member of the Technical Staff at Sandia National Laboratories (SNL).

His extensive research and development activities in cryptographic system-, protocol- and algorithm- design and analysis include positions held at SNL and as Senior Technical Advisor at the National Security Agency (NSA). During an NSA sabbatical at the Institute for Defense Analyses - Center for Communications Research, Princeton, Dr. Kravitz invented the Digital Signature Algorithm (DSA) which forms the basis of the original U.S. Digital Signature Standard (DSS) (FIPS PUB 186). He is named on nine additional U.S. patents.

Dr. Kravitz earned his Ph.D. in Electrical Engineering - Systems from the University of Southern California, 1982, under Dr. Irving S. Reed ("The Application of Finite Polynomial Rings to Number Theoretic Crypto-Systems"), M.A. in Mathematical Sciences from Johns Hopkins University, 1978 ("An Efficient Numerical Model of Estuarine Circulation"), and B.S. in Mathematics from Rutgers University, 1977 ("General Representation Theory and the Geometry of the Irreducible Representations of the Symmetric Group").

Selected Publications:

DRM

D. Goldschlag, and D. Kravitz, "Pirate Card Rejection," Smart Card Research and Applications, CARDIS '98, J.-J. Quisquater, B. Schneier (Eds.), Lecture Notes in Computer Science 1820, pp. 141-149, Springer-Verlag, 2000.

D. Goldschlag, and D. Kravitz, "Beyond Cryptographic Conditional Access," Proceedings of the USENIX Workshop on Smartcard Technology, Chicago, Illinois, May 10-11, 1999, pp. 87-91, 1999.

D. Kravitz, and D. Goldschlag, "Conditional Access Concepts and Principles," Financial Cryptography '99, M. Franklin, Ed., Lecture Notes in Computer Science 1648, pp. 158-172, Springer-Verlag, 1999.

D. Kravitz, K. Yeoh, and N. So, "Secure Open Systems for Protecting Privacy and Digital Services," Workshop on Security and Privacy in Digital Rights Management, held as part of the Eighth ACM Conference on Computer and Communications Security, Philadelphia, Pennsylvania, November 5, 2001, Lecture Notes in Computer Science 2320, pp. 106-125, Springer-Verlag, 2002.

D. Kravitz, and T. Messerges, "Achieving Media Portability through Local Content Translation and End-to-End Rights Management," DRM 2005 workshop, held as part of the Twelfth ACM Conference on Communications Security, Alexandria, Virginia, November 7, 2005, DRM '05, pp. 27-36, ACM Press, 2005.

Electronic Commerce

E. Brickell, P. Gemmell, and D. Kravitz, "Trustee-based Tracing Extensions to Anonymous Cash and the Making of Anonymous Change," Proceedings of the Sixth Annual ACM-SIAM Symposium on Discrete Algorithms, San Francisco, California, January 22-24, 1995, pp. 457-466, 1995.

Y. Frankel, D. Kravitz, C. Montgomery, and M. Yung, "Beyond Identity: Warranty-based Digital Signature Transactions," Financial Cryptography '98, R. Hirschfeld, Ed., Lecture Notes in Computer Science 1465, pp. 241-253, Springer-Verlag, 1998.

D. Kravitz, "Highly Scalable On-line Payments via Task Decoupling," Financial Cryptography '97, R. Hirschfeld, Ed., Lecture Notes in Computer Science 1318, pp. 355-373, Springer-Verlag, 1997.