Leonard Adleman

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Leonard Adleman
Born Leonard Max Adleman
(1945-12-31) December 31, 1945 (age 69)
San Francisco, California, US
Nationality American
Alma mater University of California, Berkley

Leonard Adleman is an American computer scientist, known for creating the RSA encryption.[1]


Adleman was born in California. He grew up in San Francisco and attended the University of California, Berkeley, where he received his BA degree in mathematics in 1968 and his Ph.D. degree in EECS in 1976.[1] He was also the mathematical consultant on the movie Sneakers.[2] He is a member of the National Academy of Engineering[3] and the National Academy of Sciences.[4]

Adleman is also an amateur boxer and has sparred with James Toney.[5]


In 1994, his paper Molecular Computation of Solutions To Combinatorial Problems described the experimental use of DNA as a computational system.[6] In it, he solved a seven-node instance of the Hamiltonian Graph problem, an NP-complete problem similar to the travelling salesman problem. While the solution to a seven-node instance is trivial, this paper is the first known instance of the successful use of DNA to compute an algorithm. DNA computing has been shown to have potential as a means to solve several other large-scale combinatorial search problems.[7]

In 2002, he and his research group managed to solve a 'nontrivial' problem using DNA computation.[8] Specifically, they solved a 20-variable SAT problem having more than 1 million potential solutions. They did it in a manner similar to the one Adleman used in his seminal 1994 paper. First, a mixture of DNA strands logically representative of the problem's solution space was synthesized. This mixture was then operated upon algorithmically using biochemical techniques to winnow out the 'incorrect' strands, leaving behind only those strands that 'satisfied' the problem. Analysis of the nucleotide sequence of these remaining strands revealed 'correct' solutions to the original problem.[1]

He is one of the original discoverers of the Adleman–Pomerance–Rumely primality test.[9][10]

Fred Cohen, in his 1984 paper, Experiments with Computer Viruses has credited Adleman with coining the term "virus".[11] He is also widely referred to as the Father of DNA Computing.[12][13]

Currently, Adleman is working on the mathematical theory of Strata.[14]


For his contribution to the invention of the RSA cryptosystem, Adleman, along with Ron Rivest and Adi Shamir, has been a recipient of the 1996 Paris Kanellakis Theory and Practice Award and the 2002 ACM Turing Award, often called the Nobel Prize of Computer Science.[1] Adleman was elected a Fellow of the American Academy of Arts and Sciences in 2006.[15]

See also[edit]


  1. ^ a b c d "Leonard M. Adleman | American computer scientist". Encyclopedia Britannica. Retrieved 2015-11-24. 
  2. ^ "Sneakers". www.usc.edu. Retrieved 2015-11-24. 
  3. ^ "NAE Website - Dr. Leonard M. Adleman". www.nae.edu. Retrieved 2015-11-24. 
  4. ^ "Leonard Adleman". www.nasonline.org. Retrieved 2015-11-24. 
  5. ^ Leonard Adleman spars with James Toney – http://video.google.com/videoplay?docid=-4844815748117943530&hl=en – 2 April 2008 Archived January 10, 2008 at the Wayback Machine
  6. ^ "Adleman Papers". www.usc.edu. Retrieved 2015-11-24. 
  7. ^ "Molecular Computation of Solutions to Combinatorial Problems" (PDF). American Association for the Advancement of Science. November 11, 1994. 
  8. ^ "Leonard Adleman biography, Biography". www.fampeople.com. Retrieved 2015-11-24. 
  9. ^ Primality testing algorithms [after Adleman, Rumely and Williams], volume 901 of Lecture Notes in Mathematics. Springer Berlin. 1981. 
  10. ^ "NAE Website - DNA Computing by Self-Assembly". www.nae.edu. Retrieved 2015-11-24. 
  11. ^ Cohen, Fred (1984), Computer Viruses – Theory and Experiments 
  12. ^ http://www-cs-faculty.stanford.edu/~eroberts/courses/soco/projects/2003-04/dna-computing/adleman_bio.htm
  13. ^ DNA computing#History
  14. ^ [1]
  15. ^ "Book of Members, 1780-2010: Chapter A" (PDF). American Academy of Arts and Sciences. Retrieved 6 April 2011. 

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