Designing programs that check their work

  • Authors:
  • M. Blum;S. Kanna

  • Affiliations:
  • Computer Science Division, University of California at Berkeley;Computer Science Division, University of California at Berkeley

  • Venue:
  • STOC '89 Proceedings of the twenty-first annual ACM symposium on Theory of computing
  • Year:
  • 1989

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Abstract

A program correctness checker is an algorithm for checking the output of a computation. This paper defines the concept of a program checker. It designs program checkers for a few specific and carefully chosen problems in the class P of problems solvable in polynomial time. It also applies methods of modern cryptography, especially the idea of a probabilistic interactive proof, to the design of program checkers for group theoretic computations. Finally it characterizes the problems that can be checked.