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Don Coppersmith

 

 
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Don Coppersmith
 
 
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Don Coppersmith is a cryptographer and mathematician
Mathematician

A mathematician is a person whose primary area of study and/or research is the field of mathematics....
. He was involved in the design of the Data Encryption Standard
Data Encryption Standard

The Data Encryption Standard is a block cipher that was selected by National Bureau of Standards as an official Federal Information Processing Standard for the United States in 1976 and which has subsequently enjoyed widespread use internationally....
 block cipher
Block cipher

In cryptography, a block cipher is a symmetric key algorithm cipher which operates on fixed-length groups of bits, termed blocks, with an unvarying transformation....
 at IBM
IBM

International Business Machines Corporation, abbreviated IBM and nicknamed "Big Blue" , is a multinational corporation computer technology and consulting corporation headquartered in Armonk, New York, New York, United States....
, particularly the design of the S-boxes, strengthening them against differential cryptanalysis
Differential cryptanalysis

Differential cryptanalysis is a general form of cryptanalysis applicable primarily to block ciphers, but also to stream ciphers and cryptographic hash functions....
. He has also worked on algorithm
Algorithm

In mathematics, computing, linguistics and related subjects, an algorithm is a sequence of finite instructions, often used for calculation and data processing....
s for computing discrete logarithm
Discrete logarithm

In mathematics, specifically in abstract algebra and its applications, discrete logarithms are group analogues of ordinary logarithms. In particular, an ordinary logarithm loga is a solution of the equation ax = b over the real or complex numbers....
s, the cryptanalysis
Cryptanalysis

Cryptanalysis 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....
 of RSA
RSA

In cryptography, RSA is an algorithm for public-key cryptography. It is the first algorithm known to be suitable for digital signature as well as encryption, and one of the first great advances in public key cryptography....
, methods for rapid matrix multiplication
Matrix multiplication

In mathematics, matrix multiplication is the operation of multiplying a matrix with either a scalar or another matrix. This article gives an overview of the various ways to perform matrix multiplication....
 (see Coppersmith-Winograd algorithm) and IBM's MARS cipher. Don is also a co-designer of the SEAL
SEAL (cipher)

In cryptography, SEAL is a very fast stream cipher optimised for machines with a 32-bit word size and plenty of Random Access Memory. SEAL is actually a pseudorandom function family in that it can easily generate arbitrary portions of the keystream without having to start from the beginning....
 and Scream
Scream (cipher)

The Scream cipher is a word-based stream cipher developed by Shai Halevi, Don Coppersmith and Charanjit Jutla from IBM.The cipher is designed as a software efficient stream cipher....
 ciphers.

In 1972, Coppersmith obtained a Bachelor's degree in mathematics
Mathematics

Mathematics is the study of quantity, structure, space, change, and related topics of pattern and form. Mathematicians seek out patterns whether found in numbers, space, natural science, computers, imaginary abstractions, or elsewhere....
 at the Massachusetts Institute of Technology
Massachusetts Institute of Technology

The Massachusetts Institute of Technology is a private university research university located in Cambridge, Massachusetts, Massachusetts, United States....
, and a Masters and PhD in mathematics from Harvard University
Harvard University

Harvard University is a private university in Cambridge, Massachusetts, Massachusetts, United States, and a member of the Ivy League. Founded in 1636 by the colonial Massachusetts legislature, Harvard is the Colonial Colleges institution of higher learning in the United States....
 in 1975 and 1977 respectively.






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Don Coppersmith is a cryptographer and mathematician
Mathematician

A mathematician is a person whose primary area of study and/or research is the field of mathematics....
. He was involved in the design of the Data Encryption Standard
Data Encryption Standard

The Data Encryption Standard is a block cipher that was selected by National Bureau of Standards as an official Federal Information Processing Standard for the United States in 1976 and which has subsequently enjoyed widespread use internationally....
 block cipher
Block cipher

In cryptography, a block cipher is a symmetric key algorithm cipher which operates on fixed-length groups of bits, termed blocks, with an unvarying transformation....
 at IBM
IBM

International Business Machines Corporation, abbreviated IBM and nicknamed "Big Blue" , is a multinational corporation computer technology and consulting corporation headquartered in Armonk, New York, New York, United States....
, particularly the design of the S-boxes, strengthening them against differential cryptanalysis
Differential cryptanalysis

Differential cryptanalysis is a general form of cryptanalysis applicable primarily to block ciphers, but also to stream ciphers and cryptographic hash functions....
. He has also worked on algorithm
Algorithm

In mathematics, computing, linguistics and related subjects, an algorithm is a sequence of finite instructions, often used for calculation and data processing....
s for computing discrete logarithm
Discrete logarithm

In mathematics, specifically in abstract algebra and its applications, discrete logarithms are group analogues of ordinary logarithms. In particular, an ordinary logarithm loga is a solution of the equation ax = b over the real or complex numbers....
s, the cryptanalysis
Cryptanalysis

Cryptanalysis 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....
 of RSA
RSA

In cryptography, RSA is an algorithm for public-key cryptography. It is the first algorithm known to be suitable for digital signature as well as encryption, and one of the first great advances in public key cryptography....
, methods for rapid matrix multiplication
Matrix multiplication

In mathematics, matrix multiplication is the operation of multiplying a matrix with either a scalar or another matrix. This article gives an overview of the various ways to perform matrix multiplication....
 (see Coppersmith-Winograd algorithm) and IBM's MARS cipher. Don is also a co-designer of the SEAL
SEAL (cipher)

In cryptography, SEAL is a very fast stream cipher optimised for machines with a 32-bit word size and plenty of Random Access Memory. SEAL is actually a pseudorandom function family in that it can easily generate arbitrary portions of the keystream without having to start from the beginning....
 and Scream
Scream (cipher)

The Scream cipher is a word-based stream cipher developed by Shai Halevi, Don Coppersmith and Charanjit Jutla from IBM.The cipher is designed as a software efficient stream cipher....
 ciphers.

In 1972, Coppersmith obtained a Bachelor's degree in mathematics
Mathematics

Mathematics is the study of quantity, structure, space, change, and related topics of pattern and form. Mathematicians seek out patterns whether found in numbers, space, natural science, computers, imaginary abstractions, or elsewhere....
 at the Massachusetts Institute of Technology
Massachusetts Institute of Technology

The Massachusetts Institute of Technology is a private university research university located in Cambridge, Massachusetts, Massachusetts, United States....
, and a Masters and PhD in mathematics from Harvard University
Harvard University

Harvard University is a private university in Cambridge, Massachusetts, Massachusetts, United States, and a member of the Ivy League. Founded in 1636 by the colonial Massachusetts legislature, Harvard is the Colonial Colleges institution of higher learning in the United States....
 in 1975 and 1977 respectively. He was a Putnam Fellow each year from 1968–1971, becoming the first four-time Putnam Fellow in history. In 1998, he started Ponder This, an online monthly column on mathematical puzzle
Mathematical puzzle

Mathematical puzzles make up an integral part of recreational mathematics. They have specific rules as do multiplayer games, but they do not usually involve competition between two or more players....
s and problems. In October 2005, the column was taken over by James Shearer.

In 2002, Coppersmith won the RSA Security Award for Mathematics.

Coppersmith is currently employed at the Center for Communications Research in Princeton, a division of the Institute for Defense Analyses
Institute for Defense Analyses

The Institute for Defense Analyses is a non-profit corporation that administers three federally funded research and development centers to assist the United States government in addressing important national security issues, particularly those requiring scientific and technical expertise....
.

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