Editing David A. Wagner

{{short description|American computer scientist (born 1974)}}

{{Infobox scientist
| image             = David-Wagner.jpg <!-- Only freely-licensed images may be used to depict living people.  See [[WP:NONFREE]].  -->
| image_size        = 
| name              = David A. Wagner
| caption           = 
| birth_date        = {{birth-date|1974}}
| doctoral_advisor  = [[Eric Brewer (scientist)|Eric Brewer]]
| alma_mater        = [[University of California, Berkeley]] (PhD)
| known_for         = [[cryptanalysis]], [[cryptography|cipher design]], [[electronic voting]]
| occupation        = [[Professor]], University of California, Berkeley
| website           = http://www.cs.berkeley.edu/~daw/
}}

'''David A. Wagner''' (born 1974) is a [[professor]] of [[computer science]] at the [[University of California, Berkeley]] and a well-known researcher in [[cryptography]] and [[computer security]]. He is a member of the [[Election Assistance Commission]]'s [[Technical Guidelines Development Committee]], tasked with assisting the EAC in drafting the Voluntary Voting System Guidelines. He was also a member of the [[ACCURATE]] project.

== Biography ==
Wagner received an A.B. in [[mathematics]] from [[Princeton University]] in 1995, an M.S. in [[computer science]] from Berkeley in 1999, and a Ph.D. in computer science from Berkeley in 2000. He joined the faculty of Berkeley after graduation, became a Full Professor in 2010, and was chair of the Computer Science Department from 2020 to 2022.<ref>{{Cite web |date=2022-08-02 |title=Our Leadership {{!}} EECS at UC Berkeley |url=https://eecs.berkeley.edu/people/leadership/ |access-date=2024-02-29 |archive-url=https://web.archive.org/web/20220802082252/https://eecs.berkeley.edu/people/leadership/ |archive-date=2022-08-02 }}</ref> He has received awards for his teaching.<ref>{{Cite web |title=Faculty Awards {{!}} Faculty Awards {{!}} EECS at UC Berkeley |url=https://www2.eecs.berkeley.edu/Faculty/Awards/index.html#342 |access-date=2024-02-29 |website=www2.eecs.berkeley.edu}}</ref>

== Research ==
Wagner has published two books and over 200 peer-reviewed scientific papers.<ref>{{Cite web |title=dblp: David A. Wagner 0001 |url=https://dblp.org/pid/42/5626.html |access-date=2024-02-29 |website=dblp.org |language=en}}</ref> His notable achievements include:

* 2017 Development of the [[Adversarial machine learning#Carlini & Wagner (C&W)|Carlini-Wagner]] attack on machine learning models (with [[Nicholas Carlini]]); used it to break 20 adversarial machine learning defenses.

* 2007 Served as principal investigator for the source code review and also the documentation review of the historic [[Electronic voting#California top to bottom review|California state Top-to-Bottom review]] of electronic voting systems certified for use. Flaws found with vendor-supplied [[voting machine]]s resulted in decertification and provisional recertification by the Secretary of State.
* 2001 Cryptanalysis of [[Wired Equivalent Privacy|WEP]], the security protocol used in [[802.11]] "[[WiFi]]" networks (with [[Nikita Borisov]] and [[Ian Goldberg]]).
* 2000 Cryptanalysis of the [[A5 (cryptography)|A5/1]] [[stream cipher]] used in [[GSM]] [[cellphone]]s (with [[Alex Biryukov]] and [[Adi Shamir]]).
* 1999 Cryptanalysis of [[Microsoft]]'s [[Point-to-point tunneling protocol|PPTP]] tunnelling protocol (with [[Bruce Schneier]] and "[[Peiter Zatko|Mudge]]").
* 1999 Invention of the [[slide attack]], a new form of [[cryptanalysis]] (with [[Alex Biryukov]]); also the [[boomerang attack]] and [[mod n cryptanalysis]] (the latter with Bruce Schneier and John Kelsey).
* 1998 Development of [[Twofish encryption algorithm|Twofish]] [[block cipher]], which was a finalist for [[NIST]]'s [[Advanced Encryption Standard process|Advanced Encryption Standard competition]] (with [[Bruce Schneier]], [[John Kelsey (cryptanalyst)|John Kelsey]], [[Doug Whiting]], [[Chris Hall (cryptographer)|Chris Hall]], and [[Niels Ferguson]]).
* 1997 Cryptanalyzed the [[CMEA (cipher)|CMEA]] algorithm used in many [[United States|U.S.]] [[cellphone]]s (with [[Bruce Schneier]]).
* 1995 <!-- discovery was announced in 1995, first published 1996 --> Discovered a flaw in the implementation of [[Secure Sockets Layer|SSL]] in [[Netscape Navigator]] (with [[Ian Goldberg]]).<ref>[http://www.cs.berkeley.edu/~daw/my-posts/netscape-cracked-0 Netscape SSL implementation cracked], news posting to <code>hks.lists.cypherpunks</code> on 18 Sep 1995</ref>

==References==
{{reflist}}

==External links==
* [http://www.cs.berkeley.edu/~daw/ Professor Wagner's home page]
* [https://web.archive.org/web/20090805180732/http://www.electiontechnology.com/who.php?id=25 David Wagner election research papers]
* [https://dblp.uni-trier.de/pers/hd/w/Wagner_0001:David_A= Some of Wagner's publications]
* {{webarchive |url=https://web.archive.org/web/20040203054131/http://www.popsci.com/popsci/science/article/0,12543,364614,00.html |date=February 3, 2004 |title=Interview and biography }} <!--[http://www.popsci.com/popsci/science/article/0,12543,364614,00.html Popular Science biography / interview]-->
* [http://www.cs.berkeley.edu/~daw/press/virtual-interview.html Another interview]

{{Authority control}}

{{DEFAULTSORT:Wagner, David A.}}
[[Category:1974 births]]
[[Category:Living people]]
[[Category:Modern cryptographers]]
[[Category:Princeton University alumni]]
[[Category:UC Berkeley College of Engineering alumni]]
[[Category:UC Berkeley College of Engineering faculty]]
[[Category:American computer scientists]]
[[Category:Election technology people]]