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American computer scientist and cryptographer (born 1955)
David Lee Chaum (born 1955) is an American computer scientist, cryptographer, and inventor. He is known as a pioneer in cryptography and privacy-preserving
David_Chaum
Electronic cash system
Ecash was conceived by David Chaum as an anonymous cryptographic electronic money or electronic cash system in 1982. It was realized through his corporation
Ecash
Electronic money corporation founded by David Chaum in 1990
DigiCash Inc. was an electronic money corporation founded by David Chaum in 1989. DigiCash transactions were unique in that they were anonymous due to
DigiCash
Privacy-focused encrypted messaging app
cross-platform decentralized encrypted instant messaging service developed by David Chaum and partners and running on a blockchain called xx network. Messages
Xx_messenger
Routing protocol
"cryptosystem" in the context of electronic mail was first described by David Chaum in 1981 because of the "traffic analysis problem" (traffic analysis)
Mix_network
Pseudonym of the creator of Bitcoin
partnership between Sassaman and Hal Finney. David Chaum – In 2023, CoinMarketCap suggested that cryptographer David Chaum could be Nakamoto as he was one of the
Satoshi_Nakamoto
Form of digital signature
In cryptography a blind signature, as introduced by David Chaum, is a form of digital signature in which the content of a message is disguised (blinded)
Blind_signature
Selection of decision-makers by random sample
with other screening methods can be used, as in the Venetian system. David Chaum proposed selecting a random sample of eligible voters to study and vote
Sortition
Scientific organization for research in cryptology
cryptology and related fields. The IACR was organized at the initiative of David Chaum at the CRYPTO '82 conference. The IACR organizes and sponsors three annual
International Association for Cryptologic Research
International_Association_for_Cryptologic_Research
British cryptographer and cypherpunk (born 1970)
Back is a pioneer of early digital asset research similar to Wei Dai, David Chaum, and Hal Finney. In 1997, Back invented Hashcash. A similar system is
Adam_Back
Dutch programmer and creator of Python (born 1956)
Archived from the original on 3 July 2019. Retrieved 22 February 2018. "David Chaum and Guido van Rossum awarded Dijkstra Fellowship". www.cwi.nl. Archived
Guido_van_Rossum
Vote counting system
Punchscan is an optical scan vote counting system invented by cryptographer David Chaum. Punchscan is designed to offer integrity, privacy, and transparency
Punchscan
Subfield of cryptography
Michael Ben-Or, Shafi Goldwasser and Avi Wigderson, and independently David Chaum, Claude Crépeau, and Ivan Damgård, had published papers showing "how
Secure multi-party computation
Secure_multi-party_computation
American technologist and cryptographer (1980–2011)
Industrial Cryptography (COSIC) research group, led by Bart Preneel. David Chaum and Bart Preneel were his advisors. Sassaman was a well-known cypherpunk
Len_Sassaman
Internet software to protect user identities
illegal means. This form of pseudonymous remailer is no longer common. David Chaum wrote an article in 1981 that described many of the features present
Pseudonymous_remailer
Cryptograph and cypherpunk (1956–2014)
creeping computerization, massive databases, more centralization - and [David] Chaum offers a completely different direction to go in, one which puts power
Hal Finney (computer scientist)
Hal_Finney_(computer_scientist)
Situations in which a person's identity is unknown
[citation needed] David Chaum is considered "the father of online anonymity". In the early 1980s, while a computer scientist at Berkeley, Chaum predicted the
Anonymity
Secure multi-party computation protocol
perform a secure multi-party computation of the boolean-XOR function. David Chaum first proposed this problem in the early 1980s and used it as an illustrative
Dining_cryptographers_problem
Cryptographic scheme
commitment schemes was perhaps first formalized by Gilles Brassard, David Chaum, and Claude Crépeau in 1988, as part of various zero-knowledge protocols
Commitment_scheme
Digital asset using a distributed ledger
a distinct asset class in practice. In 1983, American cryptographer David Chaum conceived of a type of cryptographic electronic money called ecash. Later
Cryptocurrency
devalue the signature in the eyes of the verifier. It was invented by David Chaum and Hans van Antwerpen in 1989. In this scheme, a signer possessing a
Undeniable_signature
Privacy-based cryptographic primitive
message on behalf of the group. The concept was first introduced by David Chaum and Eugene van Heyst in 1991. For example, a group signature scheme could
Group_signature
cash technologies, starting with the issuer-based ecash protocols of David Chaum and Stefan Brands. The idea that solutions to computational puzzles could
History_of_bitcoin
Free and open-source anonymity network
development kit (SDK). The concept of a mix network (mixnet) was introduced by David Chaum in 1979 and later published in 1981. The cypherpunk movement contributed
Nym_(mixnet)
Dutch research institute
the CWI. 1990: DigiCash, an electronic money corporation founded by David Chaum. 1994: NLnet, an Internet service provider. 1994: General Design / Satama
Centrum Wiskunde & Informatica
Centrum_Wiskunde_&_Informatica
Security enhancement for voting system
system was developed by a team of researchers including cryptographers David Chaum and Ron Rivest. Optical scan voting systems produce an electronic tally
Scantegrity
Topics referred to by the same term
Microsoft conference Mix network, an anonymous email system proposed by David Chaum in 1981 Malta Internet Exchange, an Internet backbone for the country
Mix
French actor and model David Chase (born 1945), American screenwriter David Chaussinand (born 1973), French hammer thrower David Chaum (born 1955), American
List of people with given name David
List_of_people_with_given_name_David
Israeli computer scientist
interactive identification protocols into signature schemes) and his work with David Chaum and Moni Naor on electronic money, used as the basis for the ecash system
Amos_Fiat
Software
and out of remailers from tracing them. It is an implementation of a David Chaum's mix network. Mixmaster was originally written by Lance Cottrell, and
Mixmaster_anonymous_remailer
System that enables payment transactions
The first digital currency is attributed to an algorithm developed by David Chaum in 1983. Although modern folklore suggests the possibility of early internet
Payment_processor
Currency stored on electronic systems
research paper titled "Blind Signatures for Untraceable Payments" by David Chaum introduced the idea of digital cash. In 1989, he founded DigiCash, an
Digital_currency
Distributed data store for digital transactions
therefore more secure in practice than permissionless ones. Cryptographer David Chaum first proposed a blockchain-like protocol in his 1982 dissertation "Computer
Blockchain
Distribution of jobs across different computers
other. The origins of decentralized computing originate from the work of David Chaum.[citation needed] During 1979 he conceived the first concept of a decentralized
Decentralized_computing
Cypherpunk (born 1974)
SimpleGeo. Wilcox-O'Hearn worked on the first cryptocurrency, DigiCash, with David Chaum in 1996. In January 2009, Wilcox was among the first people to publicly
Zooko_Wilcox-O'Hearn
American technologist, science fiction author, and journalist (born 1977)
to the blog BoingBoing. In spring of 2008, she published a paper with David Chaum and Len Sassaman in a USENIX workshop criticizing the lack of attention
Meredith_L._Patterson
American computer scientist (born 1957)
(1989). VLSI Placement and Routing: The PI Project. Springer-Verlag. David Chaum and Ronald L. Rivest and Sherman, Alan T. (1983). Advances in Cryptology
Alan_Sherman
Activist advocating widespread use of strong cryptography
roots of Cypherpunk ideas have been traced back to work by cryptographer David Chaum on topics such as anonymous digital cash and pseudonymous reputation
Cypherpunk
Book by Steven Levy
Hellman David Kahn Ron Rivest Adi Shamir Leonard Adleman Phil Zimmermann Tom Jennings James Bamford Dorothy Denning Tim May Eric Hughes David Chaum John
Crypto_(book)
Algorithm for public key cryptography
application to the development of ecash, an effort originally spearheaded by David Chaum. Imagine paying for an item online without the vendor needing to know
Paillier_cryptosystem
water recycling device for reuse of shower and sink water in the home David Chaum (born 1955), U.S. – Digital signatures, ecash Vladimir Chelomey (1914–1984)
List_of_inventors
Method of providing feedback to voters
Technology Initiative Secret-Ballot Receipts: True Voter-Verifiable Elections (mirror) by David Chaum Verified Voting National Committee on Voting Integrity
Voter-verified paper audit trail
Voter-verified_paper_audit_trail
Non paper-based authority or certificate
The original system of anonymous credentials, initially proposed by David Chaum is sometimes referred to as a pseudonym system. This nomenclature arises
Digital_credential
Sun-Yung Alice Chang Ruth Charney Georges Charpak Bidyut Baran Chaudhuri David Chaum Jeff Cheeger Xiuxiong Chen Shiu-Yuen Cheng Cheon Jung-hee Herman Chernoff
List of people by Erdős number
List_of_people_by_Erdős_number
TCP/IP, NCP Timothy M. Chan – Chan's algorithm Donald D. Chamberlin – SQL David Chaum – blind signatures, International Association for Cryptologic Research
List_of_programmers
Act Digital rights management (DRM) Patents RSA – now public domain David Chaum – and digital cash Cryptography and law enforcement Telephone wiretapping
Outline_of_cryptography
Decentralized digital cryptocurrency
bitcoin, several digital cash technologies were released, starting with David Chaum's ecash in the 1980s. The idea that solutions to computational puzzles
Bitcoin
author of Hashcash and CEO of Blockstream Wences Casares, CEO of Xapo David Chaum, computer scientist, cryptographer and blockchain pioneer. Wei Dai, creator
List of people in blockchain technology
List_of_people_in_blockchain_technology
and inventor of Triple DES Leonard Adleman, US, USC, the 'A' in RSA. David Chaum, US, inventor of blind signatures. Clifford Cocks, UK GCHQ first inventor
List_of_cryptographers
Russian financial technology company
system is based on the technology proposed in the eighties by Dutch David Chaum. PayCash is developed by CJSC "Processing Technologies" and JSC «Aerospace
PayCash
Voting system
requirement for remote voting over the Internet by many experts. In 2004, David Chaum proposed a solution that allows each voter to verify that their votes
End-to-end_auditable_voting
D. '75 — Chief Operating Officer of the National Science Foundation David Chaum, Ph.D. CS 1982 — creator of the company DigiCash and the first digital
List of University of California, Berkeley alumni in science and technology
List_of_University_of_California,_Berkeley_alumni_in_science_and_technology
American computer security researcher, entrepreneur and writer
Voting (Lecture Notes in Computer Science / Security and Cryptology), David Chaum, Markus Jakobsson, Ronald L. Rivest, Peter Y. A. Ryan, Josh Benaloh,
Markus_Jakobsson
Israeli computer scientist (born 1961)
Jeff Lotspiech, Revocation and Tracing Schemes for Stateless Receivers. David Chaum, Amos Fiat and Moni Naor, Untraceable Electronic Cash, 1990. Amos Fiat
Moni_Naor
American mathematician, programmer, and cypherpunk founder
Retrieved 2023-09-17. Eric Hughes, a mathematician who worked briefly for David Chaum's 'DigiCash' outfit, described anonymous remailers implemented in Perl
Eric_Hughes_(cypherpunk)
disciplines. Cryptographers think the field originated from the work of David Chaum who invented the blind signature. The blind signature is a special form
Financial_cryptography
Standard • Datagram Transport Layer Security • David Chaum • David Kahn • David Naccache • David Wagner • David Wheeler (computer scientist) • Davies attack
Index of cryptography articles
Index_of_cryptography_articles
Voting system
earlier, voter-verifiable scheme by David Chaum. It replaces the visual cryptographic encoding the voter's choice in Chaum's scheme by the conceptually and
Prêt_à_Voter
Multi-party secure computation protocol
similar idea, though in a non-public-key context, can be traced back to David Chaum's original solution to the Dining cryptographers problem. F. Hao, P. Zieliński
Anonymous_veto_network
British poet, journalist, and essayist
of 2018, Cornford has renewed his association with the cryptographer David Chaum, inventor of digital currency, mix network, multiparty computation, and
Adam_Cornford
Annual award
Signature Schemes, published in 2002 by: Robert Johnson, David Molnar, Dawn Song, and David Wagner. "The Cryptographer's Track at RSA Conference (CT-RSA)"
RSA Award for Excellence in Mathematics
RSA_Award_for_Excellence_in_Mathematics
protocol design. The essence of the idea, however, can be traced back to David Chaum's original Dining Cryptographers network protocol, where binary bits are
Password Authenticated Key Exchange by Juggling
Password_Authenticated_Key_Exchange_by_Juggling
the network is guaranteed by the Mix-net technology, first studied by David Chaum in 1981. This technology requires that user resources be employed and
Winston_Smith_Project
Dutch entrepreneur & mathematician
1996. OPERA - Open Payments European Research Association, July 1997. Chaum, David; Brands, Stefan (4 January 1999). "'Minting' electronic cash". IEEE Spectrum
Stefan_Brands
Technique for anonymous communication over a computer network
intermediary can view the original message. Anonymous remailer Bitblinder Chaum mixes Cryptography Degree of anonymity Diffie–Hellman key exchange Java
Onion_routing
Cryptographic system with public and private keys
of the packet, and the time between successive packet transmissions. Chaum, David L. (February 1981). Rivest, R. (ed.). "Untraceable Electronic Mail, Return
Public-key_cryptography
(PDF) from the original on 20 March 2014. Retrieved 1 February 2018. Chaum, David (1982). "Blind signatures for untraceable payments" (PDF). Department
History_of_money
Public-key cryptosystem
ISBN 978-1-107-01392-6. Elgamal, Taher (August 1984). Blakley, George Robert; Chaum, David (eds.). A Public Key Cryptosystem and a Signature Scheme Based on Discrete
Key_encapsulation_mechanism
Proving validity without revealing other data
1145/1250790.1250794. ISBN 978-1-59593-631-8. Retrieved 2025-09-25. Chaum, David; Evertse, Jan-Hendrik; van de Graaf, Jeroen (1988). "An Improved Protocol
Zero-knowledge_proof
New Directions in Electronic Voting", published by Springer Verlag. Chaum, David, et al. (Ed.), (c) 2010, pages 1–36. ISBN 1-4020-7301-1. "Private, Secure
Safevote
Substance used for writing which is invisible and can later be made visible
Marketplace. Clayton, Victoria: CSIRO Publishing. p. 297. ISBN 9781486303328. Chaum, David; Richard Carback; Jeremy Clark; Aleksander Essex; Stefan Popoveniuc;
Invisible_ink
Prefecture and commune in France
research centre). It allows to fly over the Garonne and the hill of Pech David and, with its 3 kilometres, it is the longest urban cable car in France
Toulouse
American cryptographer (born 1947)
V3. Chaum, David; Carback, Richard; Clark, Jeremy; Essex, Aleksander; Popoveniuc, Stefan; Rivest, Ronald L.; Ryan, Peter Y. A.; Shen, Emily; Sherman, Alan
Ron_Rivest
Type of public-key encryption
"Identity-Based Cryptosystems and Signature Schemes". In Blakley, G. R.; Chaum, David (eds.). Advances in Cryptology, Proceedings of CRYPTO '84, Santa Barbara
Identity-based_encryption
Cryptosystems and Signature Schemes" (PDF). In Blakley, George Robert; Chaum, David (eds.). Advances in Cryptology Proceedings of CRYPTO '84. Lecture Notes
Identity-based_cryptography
Voting machine manufacturer in Nebraska, US
Towards Trustworthy Elections: New Directions in Electronic Voting, D. L. Chaum, M. Jacobsson, R. L. Rivest, et al, eds, Springer Lecture Notes in Computer
Election_Systems_&_Software
Type of voting by election mechanism
8779. Archived from the original on 7 April 2014. Retrieved 2 May 2012. Chaum, David; Peter Y. A. Ryan; Steve Schneider (2005). "A Practical Voter-Verifiable
Electronic_voting
Monarchy in Himalayan (823–1949)
Scrap Book, 1834. A painting entitled Jerdair, A hill village, Gurwall by David Cox, engraved by Thomas Higham as an illustration to The Zenana., a poem
Garhwal_kingdom
Commune in Occitania, France
Cazaux-Layrisse Cazeaux-de-Larboust Cazeneuve-Montaut Cazères Cépet Cessales Charlas Chaum Chein-Dessus Ciadoux Cier-de-Luchon Cier-de-Rivière Cierp-Gaud Cintegabelle
Poucharramet
Commune in Occitania, France
Cazaux-Layrisse Cazeaux-de-Larboust Cazeneuve-Montaut Cazères Cépet Cessales Charlas Chaum Chein-Dessus Ciadoux Cier-de-Luchon Cier-de-Rivière Cierp-Gaud Cintegabelle
Montclar-Lauragais
Method of protecting data
Verzun. "Secure Dynamic Communication Network And Protocol". Listat Ltd. Chaum DL (1988). "The dining cryptographers problem: unconditional sender and
Hard_privacy_technologies
Eye care delivered through telecommunication
1444-0938.2012.00746.x. ISSN 0816-4622. PMID 22594547. S2CID 24437145. Chaum, Edward; Thomas P. Karnowski; V Priya Govindasamy; Mohamed Abdelrahman;
Teleophthalmology
Commune in Occitania, France
Cazaux-Layrisse Cazeaux-de-Larboust Cazeneuve-Montaut Cazères Cépet Cessales Charlas Chaum Chein-Dessus Ciadoux Cier-de-Luchon Cier-de-Rivière Cierp-Gaud Cintegabelle
Saint-André,_Haute-Garonne
American physicist
assigned to LightSmyth Technologies Inc. US application 2010149073, Chaum, David; Mossberg, Thomas W. & Rogers, John R., "Near to eye display system and
Thomas_W._Mossberg
and false-rejection probabilities for their protocol. Brands, Stefan; Chaum, David (1994), "Distance-Bounding Protocols", in Helleseth, Tor (ed.), Advances
Distance-bounding_protocol
Commune in Occitania, France
Cazaux-Layrisse Cazeaux-de-Larboust Cazeneuve-Montaut Cazères Cépet Cessales Charlas Chaum Chein-Dessus Ciadoux Cier-de-Luchon Cier-de-Rivière Cierp-Gaud Cintegabelle
Le_Cuing
DAVID CHAUM
DAVID CHAUM
Male
Polish
Polish form of Hebrew David, DAWID means "beloved."
Male
Greek
(Δαυίδ) Greek form of Hebrew David, DAUID means "beloved." In the bible, this is the name of the second king of Israel and ancestor of Jesus.Â
Boy/Male
American, Anglo, Australian, British, Chinese, Christian, English, French, German, Hebrew, Scottish
Son of David; David's Son; Dear One; Beloved
Boy/Male
Australian, French, German, Hebrew, Italian, Portuguese, Swiss
Italian Form of David; Beloved; Dear One
Male
Scottish
 Pet form of Scottish Gaelic Dà ibhidh, DAVIE means "beloved." Compare with another form of Davie.
Girl/Female
American, Australian, British, English, Hebrew
Beloved; Feminine Form of David
Girl/Female
Christian & English(British/American/Australian)
Feminie of David
Male
Portuguese
Brazilian Portuguese form of Hebrew David, DAVI means "beloved."
Male
Norse
Old Norse form of Hebrew David, DAVIÃ means "beloved."
Female
English
(דָוִידָה) Feminine form of Hebrew David, DAVIDA means "beloved."
Boy/Male
American, Australian, British, Christian, Danish, English, French, Hebrew, Irish
Cherished; Beloved; Variant of David Beloved; Diminutive of David
Girl/Female
English
Beloved. Feminine of David.
Boy/Male
Australian, Finnish
Form of David
Male
English
English surname transferred to forename use, from Hebrew David, DAVIS means "beloved."
Male
Yiddish
Yiddish form of Hebrew David, DOVID means "beloved."
Male
English
 English pet form of Hebrew David, DAVIE means "beloved." Compare with another form of Davie.
Boy/Male
American, Australian, British, Celtic, Chinese, Christian, English, French, Hebrew, Irish, Norse, Scandinavian
Beloved; Dear One; Bright Finn; Brilliant Finn; Black One; Variant of David
Male
Italian
Italian form of Hebrew David, DAVIDE means "beloved."
Girl/Female
American, Australian, British, Christian, English, French, German, Hawaiian, Hebrew, Indian, Latin, Swedish
Beloved; Feminine of David; Friend; Darling
Male
English
(דָּוִד, דָּוִיד) Hebrew name DAVID means "beloved." In the bible, this is the name of a son of Jesse. David was the second king of Israel and father of King Solomon. As a youth he killed a giant named Goliath with his slingshot.Â
DAVID CHAUM
DAVID CHAUM
Boy/Male
Armenian
Sign.
Girl/Female
Hindu, Indian
The Ray of Hope
Boy/Male
Hindu
Male
Hebrew
(צַפְרִיר) Hebrew form of Greek Zephyr ("west wind"), TZAFRIR means "morning breeze."
Male
Russian
(Климент) Russian form of Greek Klementos, KLIMENT means "gentle and merciful."
Boy/Male
Hindu
Boy/Male
Indian, Punjabi, Sikh
True Traditions
Boy/Male
English
Roofer.
Surname or Lastname
English (Kent)
English (Kent) : variant of Pettis.
Girl/Female
Gujarati, Hindu, Indian, Kannada
Lightening Candle
DAVID CHAUM
DAVID CHAUM
DAVID CHAUM
DAVID CHAUM
DAVID CHAUM
n.
Especially, one of the hymns by David and others, collected into one book of the Old Testament, or a modern metrical version of such a hymn for public worship.
n.
Progeny; offspring; children; descendants; as, the seed of Abraham; the seed of David.
a.
Timid; fearful.
n.
A hill in Jerusalem, which, after the capture of that city by the Israelites, became the royal residence of David and his successors.
n.
Curved arms of timber or iron, projecting over a ship's side of stern, having tackle to raise or lower a boat, swing it in on deck, rig it out for lowering, etc.; -- called also boat davits.
n.
An instrument invented by Sir David Brewster, which contains loose fragments of colored glass, etc., and reflecting surfaces so arranged that changes of position exhibit its contents in an endless variety of beautiful colors and symmetrical forms. It has been much employed in arts of design.
a.
Longing eagerly for; eager; greedy.
a.
Of or pertaining to David, the king and psalmist of Israel, or to his family.
a.
Avid.
n.
A writer or composer of sacred songs; -- a title particularly applied to David and the other authors of the Scriptural psalms.
n.
A spar formerly used on board of ships, as a crane to hoist the flukes of the anchor to the top of the bow, without injuring the sides of the ship; -- called also the fish davit.
n.
A musical instrument, of unknown character, supposed by some to have been used by the people of Gath, and thence obtained by David. It is mentioned in the title of Psalms viii., lxxxi., and lxxxiv.