David Chaum

David Chaum is the inventor of many cryptographic protocols and has contributed to the advancement of electronic cash. Chaum founded DigiCash in 1990, an electronic cash company. Additionally, in 1982 he founded the International Association for Cryptologic Research (IACR), which currently organizes some of the most important academic conferences in cryptography research. Image File history File links Metadata No higher resolution available. ... Image File history File links Metadata No higher resolution available. ... Rop Gonggrijp is a Dutch hacker and he was one of the founders of internet service provider XS4ALL. Gonggrijp was editor in chief of the Internet magazine Hack-Tic. ... This article does not cite any references or sources. ... Election People This box:      Richard L. Hasen is a professor at Loyola Law School in Los Angeles[1] . Professor Hasen has a BA from the University of California, Berkeley, and an MA, JD, and PhD from UCLA[1]. 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Wagner (1974) is an Assistant Professor of Computer Science at the University of California, Berkeley and a well-known researcher in cryptography. ... Britain J. Williams is a Professor Emeritus at Kennesaw State University in Georgia, and is director of the schools Center For Election Systems. ... A Center for Correct, Usable, Reliable, Auditable, and Transparent Elections ACCURATE was established by a group of computer scientists, psychologists and policy experts to address problems with electronic voting. ... The U.S. Election Assistance Commission (EAC) was created by the Help America Vote Act of 2002 (HAVA). ... The Federal Voting Assistance Program (FVAP) administers the Uniformed and Overseas Citizens Absentee Voting Act for the United States Secretary of Defense. ... 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The German Lorenz cipher machine, used in World War II for encryption of very high-level general staff messages Cryptography (or cryptology; derived from Greek κρυπτός kryptós hidden, and the verb γράφω gráfo write or λεγειν legein to speak) is the study of message secrecy. ... Electronic money (or digital money) refers to cash and transactions using electronic means, encompassing the use of computer networks (such as the Internet) and digital stored value systems. ... DigiCash Inc. ... The International Association for Cryptologic Research (IACR) is a non-profit scientific organization whose purpose is to further research in cryptology and related fields. ...

Dr. Chaum gained a doctorate in Computer Science and Business Administration from the University of California, Berkeley. Subsequently, he taught at the New York University Graduate School of Business Administration and at the University of California. Sather tower (the Campanile) looking out over the San Francisco Bay and Mount Tamalpais. ... New York University (NYU) is a private, nonsectarian, coeducational research university in New York City. ...

He currently heads the Punchscan project -- an open-source, end-to-end auditable voting initiative. Punchscan is an optical scan voting system invented by cryptographer David Chaum and is designed to offer integrity, privacy, and transparency. ... Election Technology This box:      End-to-end auditable (E2E) systems are a form of Independent Verification. ...

See also

• Blind signature
• Undeniable signature
• Anonymous remailer (some use Chaum's mix networks)
• Onion routing (based on Chaum's mix networks)
• Dining cryptographers protocol
• Chaum mixes

In cryptography, a blind signature, as introduced by David Chaum [1], is a form of digital signature in which the content of a message is disguised (blinded) before it is signed. ... Undeniable signatures are a form of digital signature invented by David Chaum and Hans van Antwerpen in 1989. ... An anonymous remailer is a server computer which receives messages with embedded instructions on where to send them next, and which forwards them without revealing where they originally came from. ... Digital mixes (also known as mix networks) were invented by David Chaum in the early 1980s. ... Onion routing is a technique for pseudonymous (or anonymous) communication over a computer network, developed by David Goldschlag, Michael Reed, and Paul Syverson. ... Digital mixes (also known as mix networks) were invented by David Chaum in the early 1980s. ... The dining cryptographers protocol is a method of anonymous communication. ... Generally considered the father of anonymous communications, David Chaum first proposed a system for anonymous email in 1981. ...

External links

• Home page
• Punchscan Homepage
• David Chaum on Electronic Commerce: How Much Do You Trust Big Brother? — interview

Further reading

• Email Security, Bruce Schneier (ISBN 0-471-05318-X)
• Computer Privacy Handbook, Andre Bacard (ISBN 1-56609-171-3)