01036cam a2200265 4500 544133042 TxAuBib 20051006120000.0 050810s2004||||||||||||||||||||||||eng|u 9780739441671 20.00 0739441671 20.00 MNH TxAuBib Brown, Dan. Digital fortress / Dan Brown. New York : St. Martin's, 2004. 429 p ; cm. When the National Security Agency’s code- breaking machine encounters problems they call Susan Fletcher, a brilliant cryptographer. What she uncovers is that NSA is being held hostage by a code so complex , that if released it would cripple U.S. intelligence. 20051006. United States National Security Agency Fiction. Intelligence officers Fiction. Computer security Fiction. Cryptographers Fiction. Suspense fiction. TXSTN