A Critique of Some Public-Key Cryptosystems

William J. Hartman

Abstract: Several of the public-key cryptosystems that received considerable publicity are examined. The uses, implementation, and potential cryptoanalytic attacks are discussed. Since most of the suggested systems depend on the manipulation of large numbers, special multi precision computer programs have been developed to demonstrate system implementation and cryptoanalytic attacks. Examples of the use and timing of these programs are included.

Keywords: Public-key; number theory; cryptology; algorithms

(81-79_ocr.pdf)

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