Paul Kocher

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Paul C. Kocher
Born (1973-06-11) June 11, 1973 (age 45)
New York
Residence United States
Fields Cryptography
Institutions Cryptography Research, Inc.
Alma mater Stanford University
Known for SSL v3.0, differential power analysis, timing attacks, brute force hardware, tamper-resistant hardware design

Paul Carl Kocher (born June 11, 1973) is an American cryptographer and cryptography consultant, currently the president and chief scientist of Cryptography Research, Inc.

Among his most significant achievements are the development of timing attacks that can break implementations of RSA, DSA and fixed-exponent Diffie–Hellman that operate in non-constant time, as well as the co-development of power analysis and differential power analysis. He also contributed to the design of Deep Crack, a DES brute-force key search machine. He was one of the architects of the Secure Sockets Layer (SSL) 3.0 protocol, a cryptographic protocol for secure communications on the Internet.

Kocher grew up in Oregon. He received a bachelor's degree in biology from Stanford University in 1991, where he worked part-time with Martin Hellman.

Kocher was elected to the U.S. National Academy of Engineering in 2009 for his contributions to cryptography and Internet security.

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