Adam Back
Encyclopedia
Adam Back is a British
United Kingdom
The United Kingdom of Great Britain and Northern IrelandIn the United Kingdom and Dependencies, other languages have been officially recognised as legitimate autochthonous languages under the European Charter for Regional or Minority Languages...

 cryptographer and crypto-hacker.

He is the inventor of hashcash
Hashcash
Hashcash is a proof-of-work system designed to limit email spam and denial-of-service attacks. It was proposed in March 1997 by Adam Back.-How it works:...

, a proof-of-work system
Proof-of-work system
A proof-of-work system is an economic measure to deter denial of service attacks and other service abuses such as spam on a network by requiring some work from the service requester, usually meaning processing time by a computer...

 for protecting against email spam and other denial-of-service attacks. He wrote credlib
http://www.cypherspace.org/credlib, a library that implements the credential systems of Stefan Brands
Stefan Brands
Stefan Brands is an entrepreneur and former cryptography researcher whose work has focused on digital identity, electronic money, and information privacy. He obtained his doctorate from Eindhoven University of Technology while at CWI in Amsterdam. In 2002 Stefan founded Credentica to advance his...

 and David Chaum
David Chaum
David Chaum is the inventor of many cryptographic protocols, including blind signature schemes, commitment schemes, and digital cash. In 1982, Chaum founded the International Association for Cryptologic Research , which currently organizes academic conferences in cryptography research...

. He was the first to formalize the Non-Interactive Forward-Secrecy security property for email and first to observe that any Identity Based Encryption (IBE) can be used to provide Non-Interactive Forward Secrecy http://www.cypherspace.org/adam/nifs/.

He is also known for pioneering the use of ultra-compact code in signature files and T-shirt
T-shirt
A T-shirt is a style of shirt. A T-shirt is buttonless and collarless, with short sleeves and frequently a round neck line....

s to protest the (now relaxed) U.S. cryptography export regulations.

External links


See also

  • Data security
    Data security
    Data security is the means of ensuring that data is kept safe from corruption and that access to it is suitably controlled. Thus data security helps to ensure privacy. It also helps in protecting personal data. Data security is part of the larger practice of Information security.- Disk Encryption...

  • Information privacy
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