Columbia subject headings:
Harvard subject headings:
Cryptographers--United States--Biography.
Data encryption (Computer science).
Data structures (Computer science).
Koblitz, Neal, 1948-
Koblitz, Neal, 1948---Travel.
Mathematicians--United States--Biography
Mathematics.
Mathematics_$xHistory.
Number theory.
World politics--20th century
Princeton subject headings:
Koblitz, Neal, 1948-
Koblitz, Neal, 1948---Travel.
Mathematicians--United States--Biography.
World politics--20th century.