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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
Commune in Occitania, France
Chaum is a commune in the Haute-Garonne department in southwestern France. It is situated on the former Route nationale 618, the "Route of the Pyrenees"
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
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). Applications
Mix_network
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
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
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
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 are
Xx_messenger
Pseudonym of the creator of Bitcoin
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
Distribution of jobs across different computers
Trusted by Mutually Suspicious Groups. Chaum proposed an electronic payment system called Ecash in 1982. Chaum's company DigiCash implemented this system
Decentralized_computing
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 to
Secure multi-party computation
Secure_multi-party_computation
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
British cryptographer and cypherpunk (born 1970)
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 used
Adam_Back
1 s 1 h 2 s 2 {\displaystyle t_{2}=Y^{c}h_{1}^{s_{1}}h_{2}^{s_{2}}} The Chaum–Pedersen protocol is an interactive method and needs some modification to
Publicly verifiable secret sharing
Publicly_verifiable_secret_sharing
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 into
Hal Finney (computer scientist)
Hal_Finney_(computer_scientist)
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
Free and open-source anonymity network
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)
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
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
Situations in which a person's identity is unknown
needed] David Chaum is considered "the father of online anonymity". In the early 1980s, while a computer scientist at Berkeley, Chaum predicted the world
Anonymity
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
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
System that enables payment transactions
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
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
Digital asset using a distributed ledger
distinct asset class in practice. In 1983, American cryptographer David Chaum conceived of a type of cryptographic electronic money called ecash. Later
Cryptocurrency
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 in
Pseudonymous_remailer
Decentralized digital cryptocurrency
several digital cash technologies were released, starting with David Chaum's ecash in the 1980s. The idea that solutions to computational puzzles could
Bitcoin
Local council in Northern Region, Malta
Young Sailors Club dinghy sailing club Saint Paul's Bay is twinned with: Chaum, France Agios Pavlos, Greece Oroslavje, Croatia Wikimedia Commons has media
St._Paul's_Bay
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
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
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 private
Undeniable_signature
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
Cryptographic system with public and private keys
length of the packet, and the time between successive packet transmissions. Chaum, David L. (February 1981). Rivest, R. (ed.). "Untraceable Electronic Mail
Public-key_cryptography
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 electronic
Digital_currency
Israeli computer scientist (born 1961)
Lotspiech, Revocation and Tracing Schemes for Stateless Receivers. David Chaum, Amos Fiat and Moni Naor, Untraceable Electronic Cash, 1990. Amos Fiat and
Moni_Naor
Cypherpunk (born 1974)
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
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
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
Covert cryptographic channel
pages 51–67, New York, 1984. Lecture Notes in Computer Science, ed. D. Chaum. Gustavus J. Simmons. The subliminal channel and digital signatures. In
Subliminal_channel
Algorithm for public key cryptography
to the development of ecash, an effort originally spearheaded by David Chaum. Imagine paying for an item online without the vendor needing to know your
Paillier_cryptosystem
Israeli computer scientist
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
Prefecture and commune in 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
Toulouse
Voting system
pointed out that there are issues with both of the Chaum and VoteHere cryptographic solutions. Chaum's team subsequently developed Punchscan, which has
End-to-end_auditable_voting
Software
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 was
Mixmaster_anonymous_remailer
River in France
resort town Bagnères-de-Luchon and Cierp-Gaud. It flows into the Garonne in Chaum. Sandre. "Fiche cours d'eau - La Pique (O00-0400)". Wikimedia Commons has
Pique_(river)
Act Digital rights management (DRM) Patents RSA – now public domain David Chaum – and digital cash Cryptography and law enforcement Telephone wiretapping
Outline_of_cryptography
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
Proving validity without revealing other data
doi:10.1145/1250790.1250794. ISBN 978-1-59593-631-8. Retrieved 2025-09-25. Chaum, David; Evertse, Jan-Hendrik; van de Graaf, Jeroen (1988). "An Improved
Zero-knowledge_proof
Archived (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
Study of stealing information securely and subliminally
G. J. (1984). "The Prisoners' Problem and the Subliminal Channel". In Chaum, D. (ed.). Proceedings of Crypto '83. Plenum Press. pp. 51–67. doi:10
Kleptography
Ethnic religion of the Mizo people
Taumeichher Chhi was a spirit similar to the will of the wisp phenomenon. Chaum was the spirit that instigated crab poisoning. Taul Hik was the spirit known
Sakhua
Book by Steven Levy
Zimmermann Tom Jennings James Bamford Dorothy Denning Tim May Eric Hughes David Chaum John Gilmore Len Sassaman Adam Back Hal Finney Nick Szabo Paul Le Roux Wei
Crypto_(book)
American technologist, science fiction author, and journalist (born 1977)
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
Pressure exerted by fluids inside the skull and on the brain
Pediatric Head Trauma at eMedicine Spentzas T, Henricksen J, Patters AB, Chaum E (September 2010). "Correlation of intraocular pressure with intracranial
Intracranial_pressure
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,
Ron_Rivest
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
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 of
Mix
Monarchy in Himalayan (823–1949)
Garh in Dehradun 20 Rani Garh Ranas 21 Viralta Garh Rawats 22 Chaunda Garh Chaum 23 Rani Garh Khatris 24 Tope Garh Topewals 25 Sri Guru Garh Padiyar 26 Lobha
Garhwal_kingdom
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
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
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
Ponlat-Taillebourg
European research program
of International Associations (UIA). Retrieved 13 July 2025. Preneel B.; Chaum D.; Fumy W.; Jansen C. J. A.; Landrock P.; Roelofsen G. (1991). Davies D
RACE_(Europe)
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
Lavernose-Lacasse
screenwriter David Chaussinand (born 1973), French hammer thrower David Chaum (born 1955), American computer scientist David Cheng (born 1989), American
List of people with given name David
List_of_people_with_given_name_David
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
Melles
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
Launaguet
Vote counting system
is an optical scan vote counting system invented by cryptographer David Chaum. Punchscan is designed to offer integrity, privacy, and transparency. The
Punchscan
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
Fos,_Haute-Garonne
Route nationale in France
du Portillon, Spanish frontier. Route interrupted by the Spanish border Chaum Col des Ares Juzet-d'Izaut Col de Portet d'Aspet Saint-Lary Audressein Saint-Girons
Route_nationale_618
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
Verfeil,_Haute-Garonne
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
Tournefeuille
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
Aucamville,_Haute-Garonne
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
Fontenilles
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-Lys
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
Activist advocating widespread use of strong cryptography
of Cypherpunk ideas have been traced back to work by cryptographer David Chaum on topics such as anonymous digital cash and pseudonymous reputation systems
Cypherpunk
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
Quint-Fonsegrives
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
Villeneuve-de-Rivière
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
Vacquiers
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
Fourquevaux
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
Thil,_Haute-Garonne
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
Landorthe
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
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
Avignonet-Lauragais
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
Aurin,_Haute-Garonne
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
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
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
Commune in Auvergne-Rhône-Alpes, France
combined with Lachalm referring to the abundance of thatched roofs (la chaum, thatched roof). Notable sights include the church, the chateau (privately
Saint-Romain-Lachalm
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
Fronton,_Haute-Garonne
2000 novel by Stephen Baxter
for many centuries, guiding humanity against the 'alien threat' Dorothy Chaum – Catholic priest assigned by the pope to talk with the Gaijin at their
Space_(Baxter_novel)
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
Lévignac
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
Auribail
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
Couladère
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
Saux-et-Pomarède
false-acceptance and false-rejection probabilities for their protocol. Brands, Stefan; Chaum, David (1994), Helleseth, Tor (ed.), "Distance-Bounding Protocols", 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
Cazarilh-Laspènes
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
Gensac-de-Boulogne
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
Gratentour
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
Montsaunès
CHAUM
CHAUM
CHAUM
CHAUM
Boy/Male
Hindu, Indian, Traditional
Great Philanthropist
Boy/Male
Tamil
Mud with water
Male
Greek
(Ἰωσῆς) Greek name IOSES means "exalted." In the bible, this is the name of several characters, including a brother of Jesus.
Boy/Male
Indian, Sanskrit
Annihilation; Dissolution
Boy/Male
Arabic
Glorious religion.
Girl/Female
Tamil
Honest, Night
Boy/Male
Arabic, Gujarati, Hindu, Indian, Kannada, Muslim, Sindhi
Firm; Hard
Boy/Male
Indian, Telugu
Sun of Shiva; Respectable; Good Listener
Boy/Male
Sikh
Girl/Female
Indian, Telugu
Good Name; Prosperous
CHAUM
CHAUM
CHAUM
CHAUM
CHAUM