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Text of the page (random words):
usinessman and activist see daniel j bernstein businessman this article uses bare urls which are uninformative and vulnerable to link rot please consider converting them to full citations to ensure the article remains verifiable and maintains a consistent citation style several templates and tools are available to assist in formatting such as reflinks documentation refill documentation and citation bot documentation september 2022 learn how and when to remove this template message daniel j bernstein born 1971 10 29 october 29 1971 age 50 east patchogue new york 1 nationality american german 1 alma mater university of california berkeley new york university known for qmail djbdns salsa20 chacha20 poly1305 curve25519 scientific career fields mathematics cryptography computer security institutions university of illinois at chicago eindhoven university of technology ruhr university bochum doctoral advisor hendrik lenstra website cr yp to djb html daniel julius bernstein sometimes known as djb born october 29 1971 is an american german 1 mathematician cryptologist and computer scientist he is a visiting professor at casa 2 at ruhr university bochum as well as a research professor of computer science at the university of illinois at chicago before this he was a professor persoonlijk hoogleraar in the department of mathematics and computer science at the eindhoven university of technology contents 1 early life 2 bernstein v united states 3 cryptography 4 software 5 mathematics 6 teaching 7 see also 8 references 9 external links early life edit bernstein attended bellport high school a public high school on long island graduating in 1987 at the age of 15 3 the same year he ranked fifth in the westinghouse science talent search 4 in 1987 at the age of 16 he achieved a top 10 ranking in the william lowell putnam mathematical competition 5 bernstein earned a b a in mathematics from new york university 1991 and a ph d in mathematics from the university of california berkeley 1995 where he studied under hendrik lenstra bernstein v united states edit the export of cryptography from the united states was controlled as a munition starting from the cold war until recategorization in 1996 with further relaxation in the late 1990s 6 in 1995 bernstein brought the court case bernstein v united states the ruling in the case declared that software was protected speech under the first amendment which contributed to regulatory changes reducing controls on encryption 7 bernstein was originally represented by the electronic frontier foundation 8 he later represented himself 9 cryptography edit bernstein designed the salsa20 stream cipher in 2005 and submitted it to estream for review and possible standardization he later published the chacha20 variant of salsa in 2008 in 2005 he proposed the elliptic curve curve25519 as a basis for public key schemes he worked as the lead researcher on the ed25519 version of eddsa the algorithms made their way into popular software for example since 2014 when openssh is compiled without openssl they power most of its operations and openbsd package signing is based on ed25519 10 11 nearly a decade later edward snowden disclosed mass surveillance by the national security agency and researchers discovered a backdoor in the agency s dual_ec_drbg algorithm these events raised suspicions of the elliptic curve parameters proposed by nsa and standardized by nist 12 many researchers feared 13 that the nsa had chosen curves that gave them a cryptanalytic advantage 14 15 google selected chacha20 along with bernstein s poly1305 message authentication code for use in tls which is widely used for internet security 16 many protocols based on his works have been adopted by various standards organizations and are used in a variety of applications such as apple ios 17 the linux kernel 18 openssh 19 20 and tor 21 in spring 2005 bernstein taught a course on high speed cryptography 22 he introduced new attacks against implementations of aes cache attacks in the same time period 23 in april 2008 24 bernstein s stream cipher salsa20 was selected as a member of the final portfolio of the estream project part of a european union research directive in 2011 bernstein published rfsb a variant of the fast syndrome based hash function he is one of the editors of the 2009 book post quantum cryptography 25 software edit starting in the mid 1990s bernstein has written a number of security aware programs including qmail ezmlm djbdns ucspi tcp daemontools and publicfile bernstein criticized the leading dns package at the time bind and wrote djbdns as a dns package with security as a primary goal 26 bernstein offers security guarantees for qmail and djbdns in the form of monetary rewards for the identification of flaws 27 28 a purported exploit targeting qmail running on 64 bit platforms was published in 2005 29 30 but bernstein believes that the exploit does not fall within the parameters of his qmail security guarantee in march 2009 bernstein awarded 1000 to matthew dempsky for finding a security flaw in djbdns 31 in august 2008 bernstein announced 32 dnscurve a proposal to secure the domain name system dnscurve applies techniques from elliptic curve cryptography to provide a vast increase in performance over the rsa public key algorithm used by dnssec it uses the existing dns hierarchy to propagate trust by embedding public keys into specially formatted backward compatible dns records bernstein proposed internet mail 2000 an alternative system for electronic mail intended to replace the simple mail transfer protocol smtp the post office protocol pop3 and the internet message access protocol imap 33 bernstein is also known for his string hashing function djb2 34 35 and the cdb database library 36 mathematics edit bernstein has published a number of papers on mathematics and computation many of his papers deal with algorithms or implementations in 2001 bernstein circulated circuits for integer factorization a proposal 37 which suggested that if physical hardware implementations could be brought close to their theoretical efficiency the then popular estimates of adequate security parameters might be off by a factor of three since 512 bit rsa was breakable at the time so might be 1536 bit rsa bernstein was careful not to make any actual predictions and emphasized the importance of correctly interpreting asymptotic expressions several prominent researchers among them arjen lenstra adi shamir jim tomlinson and eran tromer disagreed strongly with bernstein s conclusions 38 bernstein has received funding to investigate whether this potential can be realized bernstein is also the author of the mathematical libraries djbfft a fast portable fft library and primegen an asymptotically fast small prime sieve with low memory footprint based on the sieve of atkin rather than the more usual sieve of eratosthenes both have been used effectively in the search for large prime numbers in 2007 bernstein proposed the use of a twisted edwards curve curve25519 as a basis for elliptic curve cryptography it is employed in ed25519 implementation of eddsa in february 2015 bernstein and others published a paper on stateless post quantum hash based signatures called sphincs 39 in april 2017 bernstein and others published a paper on post quantum rsa that includes an integer factorization algorithm claimed to be often much faster than shor s 40 teaching edit in 2004 bernstein taught a course on computer software security where he assigned each student to find ten vulnerabilities in published software 41 the 25 students discovered 44 vulnerabilities and the class published security advisories about the issues 41 see also edit cubehash bernstein s submission to the nist hash function competition siphash nacl software a networking and cryptography library quick mail queuing protocol qmqp quick mail transport protocol qmtp references edit a b c j bernstein daniel curriculum vitae pdf cr yp to retrieved 20 march 2019 team casa retrieved 22 february 2021 new yorkers excel in contest new york times 1987 01 21 retrieved november 9 2008 two girls win westinghouse competition new york times 1987 01 21 retrieved march 14 2011 l f klosinski g l alexanderson l c larson oct 1988 the william lowell putnam mathematical competition the american mathematical monthly vol 95 no 8 pp 717 727 jstor 2322251 koops bert jaap august 2004 crypto law survey overview per country bert jaap koops homepage retrieved 2019 03 21 dame boyle alison 2015 04 16 eff at 25 remembering the case that established code as speech electronic frontier foundation retrieved 2019 03 21 cassidy peter 1996 06 01 reluctant hero wired issn 1059 1028 retrieved 2019 03 21 plaintiff s notice of substitution of counsel pdf 2002 10 07 retrieved 2019 03 20 murenin constantine a 2014 04 30 soulskill ed openssh no longer has to depend on openssl slashdot retrieved 2014 12 26 murenin constantine a 2014 01 19 soulskill ed openbsd moving towards signed packages based on d j bernstein crypto slashdot retrieved 2014 12 27 bernstein daniel j lange tanja 2017 01 22 safecurves choosing safe curves for elliptic curve cryptography retrieved 2019 03 20 maxwell gregory september 8 2013 tor talk nist approved crypto in tor retrieved 2015 05 20 safecurves rigidity safecurves cr yp to retrieved 2015 05 20 the nsa is breaking most encryption on the internet schneier on security www schneier com retrieved 2015 05 20 a langley w chang n mavrogiannopoulos j strombergson s josefsson 2015 12 16 chacha20 poly1305 cipher suites for transport layer security tls internet draft cite web cs1 maint uses authors parameter link ios security guide corbet jonathan replacing dev urandom linux weekly news retrieved 2016 09 20 miller damien 2016 05 03 ssh protocol chacha20poly1305 super user s bsd cross reference protocol chacha20poly1305 retrieved 2016 09 07 murenin constantine a 2013 12 11 unknown lamer ed openssh has a new cipher chacha20 poly1305 from d j bernstein slashdot retrieved 2016 09 07 roger dingledine nick mathewson tor s protocol specifications blog retrieved 20 december 2014 daniel j bernstein mcs 590 high speed cryptography spring 2005 authenticators and signatures retrieved september 23 2005 daniel j bernstein 2004 04 17 cache timing attacks on aes pdf cd9faae9bd5308c440df50fc26a517b4 cite journal cite journal requires journal help steve babbage christophe de canniere anne canteaut carlos cid henri gilbert thomas johansson matthew parker bart preneel vincent rijmen matthew robshaw the estream portfolio pdf retrieved april 28 2010 bernstein daniel j buchmann johannes dahmen erik eds 2009 post quantum cryptography berlin heidelberg springer verlag doi 10 1007 978 3 540 88702 7 isbn 9783540887010 bauer michael d 2005 linux server security o reilly media inc pp 172 173 isbn 9780596006709 hagen william von 2007 03 26 ubuntu linux bible john wiley sons p 769 isbn 9780470124543 binnie chris lighten your dns load with tinydns admin magazine retrieved 2019 03 21 georgi guninski 2005 05 31 georgi guninski security advisory 74 2005 retrieved september 23 2005 james craig burley 2005 05 31 my take on georgi guninski s qmail security advisories daniel j bernstein 2009 03 04 djbdns 1 05 lets axfred subdomains overwrite domains archived from the original on 2009 03 05 retrieved 2009 03 04 daniel j bernstein high speed cryptography https cr yp to im2000 html yigit ozan string hash functions hash function constants selection discussion cdb daniel j bernstein 2001 11 09 circuits for integer factorization a proposal cite journal cite journal requires journal help arjen k lenstra adi shamir jim tomlinson eran tromer 2002 analysis of bernstein s factorization circuit proc asiacrypt lncs 2501 1 26 https sphincs cr yp to https cr yp to papers pqrsa 20170419 pdf bare url pdf a b lemos robert 2004 12 16 students uncover dozens of unix software flaws cnet retrieved 2019 03 21 external links edit wikimedia commons has media related to daniel j bernstein wikiquote has quotations related to daniel j bernstein official website djbfft daniel bernstein on the faculty page at uic faculty page at eindhoven university of technology daniel j bernstein at the mathematics genealogy project authority control general isni 1 viaf 1 worldcat national libraries germany israel united states czech republic scientific databases dblp computer science mathscinet mathematics genealogy project zbmath other social networks and archival context sudoc france 1 retrieved from https en wikipedia org w index php title daniel_j _bernstein oldid 1112418832 categories 1971 births courant institute of mathematical sciences alumni living people modern cryptographers american computer programmers american people of german jewish descent 20th century american mathematicians 21st century american mathematicians uc berkeley college of letters and science alumni computer security academics university of illinois chicago 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