Jonathan Poritz's [P]reprint Page

[Please note: the full article texts in the following are posted merely as a convenience for the reader (and author!). In many cases, I do not own the copyright, and even when I do, I remind visitors that there are laws regarding the use (and Fair Use) of copyrighted materials. Please read, quote, print out, and generally use in any way these materials only in a manner consistent with relevent laws and general scholarly good taste. In particular, when you wish to reprint large portions of any of these articles, I believe you are obligated to ask permission of the copyright owner. I would certainly appreciate it if you mention to me when you quote and/or link to even short excerpts, whether or not it is an article of which I remain the copyright owner. Thank you!]

Refereed Publications:

  • On entropy-preserving stochastic averages. With Alan Poritz. Appeared as Linear Algebra and Its Applications 434(6) 1425-1443 (2010); © 2010 Elsevier Inc. The definitive version is available at LAA's web site or through the doi:10.1016/j.laa.2010.10.014; the text of the following is the corrected, final (published) version, however without the journal's formatting.
  • Who searches the searchers? community privacy in the age of monolithic search engines. Appeared as The Information Society 23(5) 383-389 (2007); © 2007 Taylor & Francis Group, LLC.
  • Intrusion-Tolerant Middleware: The Road to Automatic Security. With Christian Cachin, Yves Deswarte, Nuno Neves, David Powell, Robert Stroud, Paulo Verissimo, and Ian Welch. Appeared as IEEE Security & Privacy 4 (2006) 54-62; © 2006 IEEE.
  • Trust[ed| in] computing, signed code, and the heat death of the Internet. Appeared at the 2nd ACM SAC TRECK Track, April 2006. © ACM, (2006). This is the author's version of the work. It is posted here by permission of ACM for your personal use. Not for redistribution. The definitive version is published by the ACM.
  • Secure intrusion-tolerant replication on the Internet. With Christian Cachin. Appeared in Proceedings of the International Conference on Dependable Systems and Networks (DSN-2002) (2002) 167-176; © 2002 IEEE.
  • Social preferences and price cap regulation. With Alberto Iozzi and Edilio Valentini. Appeared as Journal of Public Economic Theory 4 (2002) 93-112; © 2002 Blackwell Publishers. The definitive version is available at www.blackwell-synergy.com
  • Around polygons in R3 and S3. With John J. Millson. Appeared as Communications in Mathematical Physics 218 (2001) 315-331; © 2001 Springer-Verlag. The original publication is available at www.springerlink.com.
  • The moduli space of boundary compactifications of SL(2,R). With Alessandra Iozzi. Appeared as Geometriae Dedicata 76 (1999) 65-79; © 1999 Kluwer Academic Publishers. The original publication is available at www.springerlink.com.
  • Boundary compactifications of SL(2,R) and SL(2,C). With Alessandra Iozzi. Appeared as Forum Mathematicum 11 (1999) 385-397; © 1999 de Gruyter.
  • Ford and Dirichlet domains for cyclic subgroups of PSL(2,C) acting on H3R and ∂H3R. With Todd Drumm. First published in Conformal Geometry and Dynamics 3 (1999) 116-150; © 1999 American Mathematical Society.
  • Parabolic vector bundles and Hermitian-Yang-Mills connections over a Riemann surface. Appeared as International Journal of Mathematics 4 (1993) 467-501; © 1993 World Scientific Publishing Company. The following is an electronic version of an article with doi:10.1142/S0129167X9300025X.

    • Expository (Non-refereed) Publications:

  • Hash woes. With Morton Swimmer. Appeared as Virus Bulletin October, 2004, 14-16; © 2004 Virus Bulletin, Ltd.
  • Property attestation--scalable and privacy-friendly security assessment of peer computers. With Matthias Schunter, Els Van Herreweghen and Michael Waidner. IBM Research Report RZ3548, 2004; © 2004 IBM.
  • Alternative computational devices and architectures. With Giovanni Cherubini, Heike Riel and Gian Salis. 2003. Unfortunately, this is an IBM Confidential research report.
  • Full Design of Dependable Third Party Services. With Christian Cachin (editor), et al. Deliverable D5, Project MAFTIA IST-1999-11583, 2001. (See below for copyright information.)
  • First specification of APIs and protocols for the MAFTIA middleware. With Nuno Ferreira Neves and Paulo Verissimo (editors), et al. Deliverable D24, Project MAFTIA IST-1999-11583, 2001. (See below for copyright information.)
  • Specification of dependable trusted third parties. With Christian Cachin (editor), et al. Deliverable D26, Project MAFTIA IST-1999-11583, 2001. (See below for copyright information.)

    • Articles in Progress:

  • Finding geometry in classical number theory: the Chinese Remainder Theorem, Kronecker's Theorem and wrapping lines around tori. Under construction.
  • Perelman proves Poincaré. This is an expository paper on the Poincaré and Geometrization Conjectures. The goal of the paper is to lay out all of the definitions, as well as some related motivational results and explanatory material, in a form which should be accessible to an advanced undergraduate mathematics student (say who has had advanced calculus and some linear and abstract algebra). The paper has been submitted for publication.
  • Hash chains: a weak link in trusted computing. Undergoing revisions, but here is a preliminary version:
  • Who?ogle: an associative interface to the web which preserves individual and community privacy. In preparation, watch this space.
  • Hem-lines, web rankings and other correlates of the stock market. In preparation, watch this space.
  • Ergodic theory and cryptography. In preparation, watch this space.
  • Universal Turing machines in other universes. In preparation, watch this space.

    • Patents:

  • Method and device for verifying the security of a computing platform, with Matthias Schunter, Els Van Herreweghen and Michael Waidner, US 7,770,000 B2, granted August 3, 2010. Here is the patent summary page:
  • Attestation of computing platforms, with Jan Camenisch and Roger Zimmermann, US Patent Application No. 12/439,236, Publication No. US 2009/0271618 A1, filed July 3, 2007.
  • Method and system to authenticate an application in a computing platform operating in Trusted Computing Group (TCG) domain, with Bernhard Jansen, Luke O'Connor, Els Van Herreweghen, US Patent Application No. 11/957,408, Publication No. US 2008/0288783 A1, filed December 14, 2007.


    • NOTE: Despite extensive research, it remains unclear to me who owns the copyright on MAFTIA deliverables -- perhaps it is some branch of the EU? -- and the MAFTIA web site does not clearly answer this question. In cases where this could be a concern, I suggest contancting one of the senior (former) MAFTIA organizers or perhaps the EU Information Society and Media Directorate-General (see this web site).

    Jonathan Poritz (jonathan.poritz@gmail.com)
    		 Page last modified: Saturday, 14-Jan-2012 10:15:37 MST