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Abstract: Passwords in the UNIX operating system are encrypted with the crypt algorithm and kept in the publicly-readable file /etc/passwd. This paper examines the vulnerability of UNIX to attacks on its password system. Over the past 10 years, improvements in hardware and software have increased the crypts/second/dollar ratio by five orders of magnitude. We reexamine the UNIX password system in light of these advances and point out possible solutions to the problem of easily found passwords. The paper... (Update)
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BibTeX entry: (Update)
D.C. Feldmeier and P.R. Karn, "UNIX Password Security - Ten Years Later", Proceedings of Crypto'89, published as Lecture Notes in Computer Science, No.435, Springer-Verlag, pp.44-63. http://citeseer.ist.psu.edu/188968.html More
@inproceedings{ feldmeier89unix,
author = "David C. Feldmeier and Philip R. Karn",
title = "{UNIX} Password Security - Ten Years Later",
booktitle = "{CRYPTO}",
pages = "44-63",
year = "1989",
url = "citeseer.ist.psu.edu/188968.html" }
Citations (may not include all citations):108 Prediction and entropy of printed english (context) - Shannon - 1951
61 Password security: A case history - Morris, Thompson - 1979
53 The internet worm program: An analysis - Spafford - 1989
51 Security in Computing (context) - Pfleeger - 1989
51 Exhaustive cryptanalysis of the NBS data encryption standard (context) - Diffie, Hellman - 1977
38 Cryptography: A Primer (context) - Konheim - 1981
22 Speeding up secret computations with insecure auxiliary devi.. (context) - Matsumoto, Kato et al. - 1988
11 An application of a fast data encryption standard implementa.. (context) - Bishop - 1988
8 Efficient hardware and software implementations for the DES (context) - Davio, Desmedt et al. - 1984
4 Analytical characteristics of the DES (context) - Davio, Desmedt et al. - 1983
2 source code (context) - Baldwin, crypt
2 source code (context) - Mitchell, Questor
The graph only includes citing articles where the year of publication is known.
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A High-Speed Software DES Implementation - Feldmeier (1989) (Correct)
UNIX Password Security - Walter Belgers (1993) (Correct)
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