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David Lee Chaum is an American computer scientist, cryptographer, and inventor. He is known as a pioneer in cryptography and privacy-preserving technologies, and widely recognized as the inventor of digital cash. His 1982 dissertation "Computer Systems Established, Maintained, and Trusted by Mutually Suspicious Groups" is the first known proposal for a blockchain protocol. Complete with the code to implement the protocol, Chaum's dissertation proposed all but one element of the blockchain later detailed in the Bitcoin whitepaper. He has been referred to as "the father of online anonymity", and "the godfather of cryptocurrency".
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In cryptography, the dining cryptographers problem studies how to 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 example to show that it was possible to send anonymous messages with unconditional sender and recipient untraceability. Anonymous communication networks based on this problem are often referred to as DC-nets.
U-Prove is a free and open-source technology and accompanying software development kit for user-centric identity management. The underlying cryptographic protocols were designed by Dr. Stefan Brands and further developed by Credentica and, subsequently, Microsoft. The technology was developed to allow internet users to disclose only the minimum amount of personal data when making electronic transactions as a way to reduce the likelihood of privacy violations.
Amos Fiat is an Israeli computer scientist, a professor of computer science at Tel Aviv University. He is known for his work in cryptography, online algorithms, and algorithmic game theory.
GNU Taler is a free software-based microtransaction and electronic payment system. Unlike most other decentralized payment systems, GNU Taler does not use a blockchain. A blind signature is used to protect the privacy of users as it prevents the exchange from knowing which coin it signed for which customer.
References
- ↑ Chaum, David (1983). "Blind Signatures for Untraceable Payments" (PDF). Advances in Cryptology. Vol. 82. pp. 199–203. doi:10.1007/978-1-4757-0602-4_18. ISBN 978-1-4757-0604-8.
- ↑ Pitta, Julie (1999/11/01). Requiem for a Bright Idea - Forbes
- ↑ "In Brief: InfoSpace Buys eCash Technologies". American Banker. 2002-03-01. Retrieved 2021-03-18.
- ↑ Blind Signatures for Untraceable Payments," D. Chaum, Advances in Cryptology Proceedings of Crypto 82, D. Chaum, R.L. Rivest, & A.T. Sherman (Eds.), Plenum, pp. 199-203.
- ↑ Chaum, David. "Security Without Identification: Transaction Systems To Make Big Brother Obsolete". Communications of the ACM 28.10 (1985): 1030-1044. Web.
- ↑ "eCash: Overview, Rise and Fall". Investopedia. Retrieved 2023-09-25.
- ↑ https://web.archive.org/web/20220817175828/https://chaum.com/wp-content/uploads/2022/01/05-07-96-DigiCash_s-Ecash%E2%84%A2-to-be-Issued-by-Deutsche-Bank.pdf [ bare URL PDF ]
- ↑ Brodesser, Jens-Ingo. "First Monday Interviews: David Chaum." First Monday [Online], 4.7 (1999): n. pag. Web. 8 Jun. 2016
- ↑ Pitta, Julie. "Requiem for a Bright Idea." Forbes. N.p., 1 Nov. 1999. Web. 5 May 2016.
- ↑ Pentland, Alex 'Sandy'. "Digital cash and privacy: What are the alternatives to Libra?". MIT Media Lab. Retrieved 2019-12-30.