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== Life ==
== Life ==
Back was born in London, England, in July 1970.<ref>{{Cite book|url= https://books.google.com/books?id=3ZGNDwAAQBAJ&pg=PT252 |title= The Bitcoin Saga: A Mixed Montage |publisher= Bloomsbury Publishing |year=2019|isbn= 978-9388271837 |last1= Singh |first1= Rachna }}</ref> His first computer was a [[ZX81|Sinclair ZX81]]. He taught himself [[BASIC|Basic]], and spent his time reverse engineering [[Video game|video games]], finding [[Decryption key|decryption keys]] in [[Software package|software packages]]. He completed his [[A-Levels|A levels]] in advanced [[mathematics]], [[physics]] and [[economics]].
Back was born in London, England, in July 1970.<ref>{{Cite book|url= https://books.google.com/books?id=3ZGNDwAAQBAJ&pg=PT252 |title= The Bitcoin Saga: A Mixed Montage |publisher= Bloomsbury Publishing |year=2019|isbn= 978-9388271837 |last1= Singh |first1= Rachna }}</ref> He has a computer science [[Doctor of Philosophy|PhD]] in [[distributed systems]] from the [[University of Exeter]].<ref name="BloombergBack">{{cite news |last1= Kharif |first1= Olga |title= Latest Satoshi Nakamoto Candidate Buying Bitcoin No Matter What|url=https://www.bloomberg.com/news/articles/2020-06-02/latest-satoshi-nakamoto-candidate-buying-bitcoin-no-matter-what |access-date=3 June 2020 |newspaper=Bloomberg|date=2 June 2020}}</ref>

He has a [[computer science]] [[Doctor of Philosophy|PhD]] in [[distributed systems]] from the [[University of Exeter]].<ref name="BloombergBack">{{cite news |last1= Kharif |first1= Olga |title= Latest Satoshi Nakamoto Candidate Buying Bitcoin No Matter What|url=https://www.bloomberg.com/news/articles/2020-06-02/latest-satoshi-nakamoto-candidate-buying-bitcoin-no-matter-what |access-date=3 June 2020 |newspaper=Bloomberg|date=2 June 2020}}</ref> During his PhD [[Adam Back|Back]] worked with [[Compiler|compilers]] to make use of [[parallel computers]] in a semi automated way. He became interested in [[Pretty Good Privacy|pgp]] encryption, [[Electronic cash system|electronic cash]] and [[Anonymous remailer|remailers.]] He spent two thirds of his time working with [[encryption]]. After graduation, [[Adam Back|Adam]] spent his career as a [[Consultant|consultan]]<nowiki/>t in [[Startup company|start ups]] and larger companies in [[applied cryptography]], writing cryptographic libraries, [[Design|designing]], [[Review|reviewing]] and breaking other people's [[Cryptographic protocol|cryptographic protocols]].<ref>{{Cite web|url=https://www.youtube.com/watch?v=qEaulpPo7iM|url-status=live}}</ref>


== Cryptography software ==
== Cryptography software ==

Revision as of 00:52, 24 February 2021

Adam Back
BornJuly 1970 (age 54)
London, England, UK
EducationUniversity of Exeter
Scientific career
FieldsCryptographic protocols
Electronic cash
Privacy-enhancing technologies
Distributed systems
InstitutionsZero-Knowledge Systems
Pi Corporation
Blockstream
ThesisParallelization of general purpose programs using optimistic techniques from parallel discrete event simulation (1995)
Doctoral advisorStephen Turner
Websitecypherspace.org/adam

Adam Back (born July 1970) is a British cryptographer and cypherpunk. He is the CEO of Blockstream, which he co-founded in 2014. He invented Hashcash, which is used in the Bitcoin mining process.

Life

Back was born in London, England, in July 1970.[1] He has a computer science PhD in distributed systems from the University of Exeter.[2]

Cryptography software

Back's "Munitions" T-shirt featured computer code that was considered to be a weapon in the United States.

Back is a pioneer of early digital asset research similarly as Wei Dai, David Chaum, and Hal Finney.[3][4] In 1997, Back invented Hashcash.[5] A similar system is used in bitcoin.[6][7][8]

He also implemented credlib,[9][better source needed][10][better source needed] a library that implements the credential systems of Stefan Brands and David Chaum.

He was the first to describe the "non-interactive forward secrecy"[11][12][13] security property for email and to observe that any identity based encryption scheme can be used to provide non-interactive forward secrecy.

He is also known for promoting the use of ultra-compact code with his 2-line[14] and 3-line RSA in Perl[15][16][17] signature file and non-exportable T-shirts[18][19] to protest cryptography export regulations.[20]

Back was one of the first two people to receive an email from Satoshi Nakamoto.[21][2] In 2016, the Financial Times cited Back as a potential Nakamoto candidate, along with Nick Szabo and Hal Finney.[22] In 2020, a YouTube channel called BarelySociable claimed that Back was Nakamoto. Back denied this.[2] Craig Wright had sued Back for stating that Wright was not Nakamoto, with Wright subsequently dropping the suit.[2]

Back has promoted the use of satellites and mesh networks to broadcast and receive bitcoin transactions, as a backup for the traditional internet.[23]

Business career

On 3 October 2016, Back was appointed as CEO of Blockstream.[24]

References

  1. ^ Singh, Rachna (2019). The Bitcoin Saga: A Mixed Montage. Bloomsbury Publishing. ISBN 978-9388271837.
  2. ^ a b c d Kharif, Olga (2 June 2020). "Latest Satoshi Nakamoto Candidate Buying Bitcoin No Matter What". Bloomberg. Retrieved 3 June 2020.
  3. ^ Leising, Matthew (30 June 2018). "Is Bitcoin Creator Writing a Book? Cryptic Note Indicates Yes". Bloomberg. Retrieved 13 May 2020.
  4. ^ Bustillos, Maria (25 August 2015). "Inside the Fight Over Bitcoin's Future". New Yorker. Retrieved 13 May 2020.
  5. ^ Narayanan, Arvind; Bonneau, Joseph; Felten, Edward; Miller, Andrew; Goldfeder, Steven (2016). Bitcoin and Cryptocurrency Technologies: A Comprehensive Introduction. Princeton and Oxford: Princeton University Press. ISBN 978-0-691-17169-2.
  6. ^ Shaw, Jessica Marmor (8 January 2018). "Bitcoin and cryptocurrency on Twitter: The most important people to follow". Marketwatch. Retrieved 14 May 2020.
  7. ^ "Bitcoin: A Peer-to-Peer Electronic Cash System" (PDF).
  8. ^ Casey, Michael J. (22 October 2020). "BitBeat: Bitcoin Coding Allstars Launch Sidechains Project to Boost Innovation". WSJBlogs. Retrieved 14 May 2020.
  9. ^ Frisby, Dominic (2015). "Footnotes". Bitcoin: The future of money?. Unbound. ISBN 978-1783521029.
  10. ^ "credlib - Credential Library". cypherspace.org.
  11. ^ Boyd, Colin. "A Modern View on Forward Security" (PDF). IACR. Retrieved 14 May 2020.
  12. ^ Anderson, Ross (2002). "Two remarks on public key cryptology" (PDF). Cambridge University. Retrieved 14 May 2020.
  13. ^ "Non-Interactive Forward Secrecy". cypherspace.org.
  14. ^ Salomon, David (2003). "Secure Programming with Perl". Data Privacy and Security. Springer. p. 200. ISBN 9781441918161.
  15. ^ Judmayer, Aljosha; Stifter, Nicholas (2017). "Before bitcoin". Blocks and Chains: Introduction to Bitcoin, Cryptocurrencies, and Their Consensus Mechanisms (Synthesis Lectures on Information Security, Privacy, and Tru). Morgan & Claypool Publishers. p. 17. ISBN 9781627057165.
  16. ^ "export-a-crypto-system sig". cypherspace.org.
  17. ^ Sinn, Richard (2007). "Secure Programming with Perl". Software Security Technologies. Cengage Learning. p. 366. ISBN 9781428319455.
  18. ^ Blanchette, Jean-François (2012). "On the brink of revolution". Burdens of Proof: Cryptographic Culture and Evidence Law in the Age of Electronic Documents. MIT Press. p. 50. ISBN 978-0262017510.
  19. ^ "Munitions T-shirt". cypherspace.org.
  20. ^ Brunton, Finn (2019). "On the brink of revolution". Digital Cash: The Unknown History of the Anarchists, Utopians, and Technologists Who Created Cryptocurrency. Princeton Press. p. 97. ISBN 9780691179490.
  21. ^ RATLIFF, EVAN (16 July 2019). "Was Bitcoin Created by This International Drug Dealer? Maybe!". Wired. Retrieved 13 May 2020.
  22. ^ Kaminska, Izabella (7 May 2016). "Bitcoin: Identity crisis". Financial Times. Retrieved 4 June 2020.
  23. ^ del Castillo, Michael (17 December 2018). "Who Needs Verizon? Blockstream Broadcasts Entire Bitcoin Blockchain From Space". Forbes. Retrieved 13 May 2020.
  24. ^ Blockstream (2016-10-03). "Blockstream Appoints Hashcash Inventor Dr. Adam Back as CEO". PR News Wire. Retrieved 2020-12-05.