John Richard Black, Jr. is a

cryptologist This is a list of cryptographers. Cryptography is the practice and study of techniques for secure communication in the presence of third parties called adversaries. Pre twentieth century * Al-Khalil ibn Ahmad al-Farahidi: wrote a (now lost) bo ...

, programmer, and

professor Professor (commonly abbreviated as Prof.) is an academic rank at universities and other post-secondary education and research institutions in most countries. Literally, ''professor'' derives from Latin as a "person who professes". Professors ...

of computer science at the

University of Colorado Boulder The University of Colorado Boulder (CU Boulder, CU, or Colorado) is a public research university in Boulder, Colorado. Founded in 1876, five months before Colorado became a state, it is the flagship university of the University of Colorado sy ...

focusing on

computer security Computer security, cybersecurity (cyber security), or information technology security (IT security) is the protection of computer systems and networks from attack by malicious actors that may result in unauthorized information disclosure, t ...

. He graduated with a BA in computer science from

CSU East Bay California State University, East Bay (Cal State East Bay, CSU East Bay, or CSUEB) is a public university in Hayward, California. The university is part of the 23-campus California State University system and offers 136 undergraduate and 60 pos ...

in 1988 and completed his PhD in

cryptography Cryptography, or cryptology (from grc, , translit=kryptós "hidden, secret"; and ''graphein'', "to write", or ''-logia'', "study", respectively), is the practice and study of techniques for secure communication in the presence of adver ...

UC Davis The University of California, Davis (UC Davis, UCD, or Davis) is a public land-grant research university near Davis, California. Named a Public Ivy, it is the northernmost of the ten campuses of the University of California system. The institut ...

with

Phillip Rogaway Phillip Rogaway is a professor of computer science at the University of California, Davis. He graduated from Beverly Hills High School, and later earned a BA in computer science from UC Berkeley and completed his PhD in cryptography at MIT, in t ...

in 2000. He has taught at CU-Boulder since 2002. Black has been involved in the invention of several cryptographic algorithms including

UMAC In cryptography, a message authentication code based on universal hashing, or UMAC, is a type of message authentication code (MAC) calculated choosing a hash function from a class of hash functions according to some secret (random) process and ap ...

, PMAC, OCB, and CMAC as well as algorithms related to

Format Preserving Encryption In cryptography, format-preserving encryption (FPE), refers to encrypting in such a way that the output (the ciphertext) is in the same format as the input (the plaintext). The meaning of "format" varies. Typically only finite sets of characters ar ...

. In 2004, he worked with students Martin Cochran and Ryan Gardner to defeat the security mechanisms of the

Internet Chess Club The Internet Chess Club (ICC) is a commercial Internet chess server devoted to the play and discussion of chess and chess variants. ICC had over 30,000 subscribing members in 2005.John Black, Martin Cochran, Martin Ryan Gardner"Lessons Learned ...

Notes

External links

* John Black's home page at CU-Boulde

Five Questions for John Black
{{DEFAULTSORT:Black, John Living people Modern cryptographers American computer programmers University of California, Davis alumni Computer security academics University of Colorado Boulder faculty Year of birth missing (living people)