Lars R. Knudsen

Lars Ramkilde Knudsen (born February 21, 1962) is a Danish researcher in cryptography, particularly interested in the design and analysis of block ciphers, hash functions and message authentication codes (MACs). Download high resolution version (1106x1438, 184 KB)Lars Knudsen, from [1]. Used by permission under the terms of the GFDL. File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ... Download high resolution version (1106x1438, 184 KB)Lars Knudsen, from [1]. Used by permission under the terms of the GFDL. File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ... February 21 is the 52nd day of the year in the Gregorian Calendar. ... 1962 (MCMLXII) was a common year starting on Monday (link will take you to calendar). ... Cryptography has had a long and colourful history. ... Cryptanalysis (from the Greek kryptós, hidden, and analýein, to loosen or to untie) is the study of methods for obtaining the meaning of encrypted information, without access to the secret information which is normally required to do so. ... In cryptography, a block cipher is a symmetric key cipher which operates on fixed-length groups of bits, termed blocks, with an unvarying transformation. ... In cryptography, a cryptographic hash function is a hash function with certain additional security properties to make it suitable for use as a primitive in various information security applications, such as authentication and message integrity. ... A cryptographic message authentication code (MAC) is a short piece of information used to authenticate a message. ...

After some early work in banking, Knudsen enrolled at Aarhus University in 1984 studying mathematics and computer science, gaining a MSc in 1992 and a PhD in 1994. From 1997-2001, he worked at the University of Bergen, Norway. Currently, Knudsen is a professor in the Department of Mathematics at the Technical University of Denmark. For other uses, see Bank (disambiguation). ... University of Aarhus The University of Aarhus is a university based in Århus, Denmark. ... 1984 (MCMLXXXIV) is a leap year starting on Sunday of the Gregorian calendar. ... Wikibooks Wikiversity has more about this subject: School of Mathematics Wikiquote has a collection of quotations related to: Mathematics Look up Mathematics in Wiktionary, the free dictionary Wikimedia Commons has media related to: Mathematics Interactive Mathematics Miscellany and Puzzles — A collection of articles on various math topics, with interactive Java... Wikibooks Wikiversity has more about this subject: School of Computer Science Open Directory Project: Computer Science Downloadable Science and Computer Science books Collection of Computer Science Bibliographies Belief that title science in computer science is inappropriate Categories: | ... 1992 (MCMXCII) was a leap year starting on Wednesday. ... 1994 (MCMXCIV) was a common year starting on Saturday of the Gregorian calendar, and was designated the International year of the Family. ... 1997 (MCMXCVII) is a common year starting on Wednesday of the Gregorian calendar. ... 2001: A Space Odyssey. ... The University of Bergen (Universitetet i Bergen) is located in Bergen, Norway. ... 2004 is a leap year starting on Thursday of the Gregorian calendar. ... Wikibooks Wikiversity has more about this subject: School of Mathematics Wikiquote has a collection of quotations related to: Mathematics Look up Mathematics in Wiktionary, the free dictionary Wikimedia Commons has media related to: Mathematics Interactive Mathematics Miscellany and Puzzles — A collection of articles on various math topics, with interactive Java... Technical University of Denmark The Technical University of Denmark (Danish: Danmarks Tekniske Universitet (DTU)) was founded in 1829 as the College of Advanced Technology (Danish: Den Polytekniske Læreanstalt) belonging to the University of Copenhagen. ...

Knudsen has published analyses of a wide variety of cryptographic designs, including the RMAC scheme, the SHA-1 and MD2 hash functions, and at least a dozen block ciphers: DES, DFC, IDEA, Ice, LOKI, MISTY, RC2, RC5, RC6, SC2000, Skipjack, Square and SAFER — it has been hinted that the "SK" in the "SAFER-SK" variant means Stop Knudsen after he had found weaknesses in a previous version. Knudsen has also designed ciphers, including the AES candidates DEAL and Serpent (the latter in conjunction with Ross Anderson and Eli Biham). The SHA (Secure Hash Algorithm) family is a set of related cryptographic hash functions designed by the National Security Agency (NSA) and published by the National Institute of Standards and Technology (NIST). ... Message Digest Algorithm 2 (MD2) is a cryptographic hash function developed by Ronald Rivest in 1989. ... General Designer(s) IBM First published 1975 (January 1977 as the standard) Derived from Lucifer (cipher) Cipher(s) based on this design Triple DES, G-DES, DES-X, LOKI89, ICE Algorithm detail Block size(s) 64 bits Key size(s) 56 bits Structure Feistel network Number of rounds 16 Best... The Dysfunctional Family Circus is the name of several long-run parodies of the syndicated comic strip The Family Circus, featuring either Bil Keanes artwork with altered captions, or (less often) original artwork made to appear like the targeted strips. ... In cryptography, the International Data Encryption Algorithm (IDEA) is a block cipher designed by Xuejia Lai and James L. Massey of ETH-Zürich and was first described in 1991. ... This picture, from an 18th century Icelandic manuscript, shows Loki with his invention - the fishing net. ... Misty may mean: Misty (jazz), a jazz standard written in 1954 by the pianist Errol Garner Misty (Pokémon), a fictional character in the Pokémon universe, known as Kasumi in Japanese Misty (classified project), an American spy satellite MISTY1, a cryptographic algorithm Misty may also refer to: Mist Misty... General Designer(s) Ron Rivest First published source code leaked 1996 (designed 1987) Derived from - Cipher(s) based on this design - Algorithm detail Block size(s) 64 bits Key size(s) 8–128 bits, in steps of eight bits; default 64 bits Structure Source-heavy Feistel network Number of rounds... General Designer(s) Ron Rivest First published 1994 Derived from - Cipher(s) based on this design RC6, Akelarre Algorithm detail Block size(s) 32, 64 or 128 bits (64 suggested) Key size(s) 0 to 2040 bits (128 suggested) Structure Feistel network Number of rounds 12 suggested originally Best cryptanalysis... In cryptography, RC6 is a symmetric key block cipher derived from RC5. ... In cryptography, Skipjack is a block cipher — an algorithm for encryption — developed by the US National Security Agency (NSA). ... In cryptography, Square (sometimes written SQUARE) is a block cipher invented by Joan Daemen and Vincent Rijmen. ... This article is about the encryption algorithm. ... On January 2, 1997 the National Institute of Standards and Technology, or NIST, called for cryptographers to propose a new standard block cipher for United States Government use in non_classified but sensitive applications. ... Deal can refer to: an agreement reached after negotiation, for example a contract to sell as a dealer or dealership a bargain Deal$, a U.S. dollar store the town of Deal, Kent, England the borough of Deal, New Jersey, United States while playing card games, the act of distributing... Serpent is a symmetric key block cipher which was a finalist in the Advanced Encryption Standard contest, where it came second to Rijndael. ... Ross J. Anderson is a researcher, writer, and industry consultant in security engineering. ... Eli Biham is an Israeli cryptographer and cryptanalyst, currently a professor at the Technion Israeli Institute of Technology Computer Science department. ...

External links

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