Lawrence Peter "Lawrie" Brown is a cryptographer and computer security

Computer security

Computer security is a branch of computer technology known as information security as applied to computers and networks. The objective of computer security includes protection of information and property from theft, corruption, or natural disaster, while allowing the information and property to...

 researcher, currently a Senior Lecturer at the Australian Defence Force Academy

Australian Defence Force Academy

The Australian Defence Force Academy is a tri-service military Academy that provides military and tertiary academic education for junior officers of the Australian Defence Force in the Royal Australian Navy , Australian Army and Royal Australian Air Force .Tertiary education is provided by the...

. His notable work includes the design of the block cipher

Block cipher

In cryptography, a block cipher is a symmetric key cipher operating on fixed-length groups of bits, called blocks, with an unvarying transformation. A block cipher encryption algorithm might take a 128-bit block of plaintext as input, and output a corresponding 128-bit block of ciphertext...

s LOKI

LOKI

In cryptography, LOKI89 and LOKI91 are block ciphers designed as possible replacements for the Data Encryption Standard . The ciphers were developed based on a body of work analysing DES, and are very similar to DES in structure...

 and LOKI97

LOKI97

In cryptography, LOKI97 is a block cipher which was a candidate in the Advanced Encryption Standard competition. It is a member of the LOKI family of ciphers, earlier instances being LOKI89 and LOKI91...

. He received his Ph.D.

Ph.D.

A Ph.D. is a Doctor of Philosophy, an academic degree.Ph.D. may also refer to:* Ph.D. , a 1980s British group*Piled Higher and Deeper, a web comic strip*PhD: Phantasy Degree, a Korean comic series* PhD Docbook renderer, an XML renderer...

 in mathematics

Mathematics

Mathematics is the study of quantity, space, structure, and change. Mathematicians seek out patterns and formulate new conjectures. Mathematicians resolve the truth or falsity of conjectures by mathematical proofs, which are arguments sufficient to convince other mathematicians of their validity...

 from the University of New South Wales

University of New South Wales

The University of New South Wales , is a research-focused university based in Kensington, a suburb in Sydney, New South Wales, Australia...

 in 1991, with a dissertation on the design of LOKI and the cryptanalysis

Cryptanalysis

Cryptanalysis is the study of methods for obtaining the meaning of encrypted information, without access to the secret information that is normally required to do so. Typically, this involves knowing how the system works and finding a secret key...

 of the Data Encryption Standard

Data Encryption Standard

The Data Encryption Standard is a block cipher that uses shared secret encryption. It was selected by the 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. It is...

.

Personal interests

According to his personal homepage, Brown's social activities include dancing a number of different styles. He has also composed some of his own dances. He enjoys reading science fiction and is an amateur radio

Amateur radio

Amateur radio is the use of designated radio frequency spectrum for purposes of private recreation, non-commercial exchange of messages, wireless experimentation, self-training, and emergency communication...

 enthusiast. Brown is a practicing Baptist

Baptist

Baptists comprise a group of Christian denominations and churches that subscribe to a doctrine that baptism should be performed only for professing believers , and that it must be done by immersion...

.

External links

• Lawrie Brown's page at ADFA