Lec05_DES - Data Encryption Standard (DES) Lecture 5 Prof....

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1 Prof. Ren 1 Data Encryption Standard (DES) Lecture 5 Prof. Ren 2 Background In the 1960s, IBM set up a research project in computer cryptography led by Horst Feistel. The project concluded in 1972, with the development of an algorithm with the designation LUCIFER. In 1973 the National Bureau of Standards (NBS) issued a request for proposals for a national cipher standard. IBM submitted the results of its Tuchman- Meyer project.
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2 Prof. Ren 3 Background This was by far one of the best algorithm proposed and was adopted in 1977 as the Data Encryption Standard (DES). The most widely used encryption scheme In 1994, NIST (National Institute of Standards & Technology) reaffirmed DES for federal use for another five years. NIST recommended the use of DES for applications other than the protection of classified information. Federal Information Processing Standard 46 (FIPS PUB 46). Prof. Ren 4 Some Facts Data are en/decrypted in 64-bit blocks block cipher- process messages in blocks Feistel Structure DES uses a 56-bit key.
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This note was uploaded on 10/27/2009 for the course ECE 816 taught by Professor Ren during the Spring '09 term at Michigan State University.

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Lec05_DES - Data Encryption Standard (DES) Lecture 5 Prof....

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