David Chaum


Widely recognized as the inventor of digital cash, he is also known for other fundamental innovations in cryptography, including privacy technology and secure election systems. With a PhD in Computer Science from UC Berkeley, he taught at NYU Graduate School of Business and the University of California, lead a number of breakthrough projects as well as founded the International Association for Cryptologic Research, the cryptography group at the Center for Mathematics and Computer Science in Amsterdam, DigiCash, the Voting Systems Institute, and the Spectoccular Technology Fund.

David Chaum David Chaum David Chaum



International Association for Cryptologic Research

Organized one of the first conference on cryptography and used it to found and launch IACR, at a time when NSA was threatening scientific societies to halt presentation of papers on crypto

It remains the scientific society of the field, sponsoring three conferences each year around the world as well as multiple workshops and a scientific journal.

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Achieving Electronic Privacy

Invented what remain the key privacy-technologies—untraceable electronic mail, digital cash, and credentials

Article in Scientific American, and by invitation in technical journals, also predicting in 1992 essentially today’s smartphones and electronic commerce, while offering a solution to the consumer privacy issues of the digital world.

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eCash Electronic Cash

Invented and as DigiCash CEO saw through to global deployment the first digital bearer instrument and first privacy-protecting electronic payments

The eCash system was implemented, launched online as its own currency, as well as licensed to Deutsche Bank, Namura, and other major banks in the 1990’s.

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Multiparty Computation

The “Turing Machine” of information security, showing how cryptography can solve any information security problem by synthesizing a universally trustworthy entity

Led the research effort that proved these fundamental theorems constructively in the three main assumption models and unilaterally in a combined model.

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Election Integrity Technology

First publicly-verifiable binding governmental election

Invented and led successful implementation and deployment of breakthrough election technology—including software, hardware, special printing and inks—for the municipal elections of Takoma Park Maryland in 2009 and again by invitation in 2011.

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Random-Sample Elections

Far less expensive, yet more democratic and more secure

Invented and leads an international team developing and proving efficacy of a technology that addresses complexity better than today’s mass elections by letting each voter focus on a single issue at a time—even making feasible the first global election.

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Breakthrouhg privacy technology that solves the “meta-data” problem while preventing anonymity abuse

Invented cryptographic protocols 1000 times faster than those known, allowing nearly instant smartphone-to-smartphone transactions—including messaging, payments, feeds, and credentials—without significantly more network or battery usage.

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All styles of eyeglasses can be upgraded to overlay, anywhere you can see through them, digital imagery that is of unbeatable quality

Invented then founded and led an effort that has demonstrated feasibility of a new paradigm for delivering light that digitally deconstructs images so that they can be reconstructed on the retina with dynamic focus and exquisite clarity.

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info at chaum.com