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Large Key Sizes and the Security of Password-Based Cryptography

Large Key Sizes and the Security of Password-Based Cryptography

Kent D. Boklan
Copyright: © 2011 |Pages: 7
ISBN13: 9781609602000|ISBN10: 1609602005|EISBN13: 9781609602024
DOI: 10.4018/978-1-60960-200-0.ch005
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MLA

Boklan, Kent D. "Large Key Sizes and the Security of Password-Based Cryptography." Security and Privacy Assurance in Advancing Technologies: New Developments, edited by Hamid Nemati, IGI Global, 2011, pp. 60-66. https://doi.org/10.4018/978-1-60960-200-0.ch005

APA

Boklan, K. D. (2011). Large Key Sizes and the Security of Password-Based Cryptography. In H. Nemati (Ed.), Security and Privacy Assurance in Advancing Technologies: New Developments (pp. 60-66). IGI Global. https://doi.org/10.4018/978-1-60960-200-0.ch005

Chicago

Boklan, Kent D. "Large Key Sizes and the Security of Password-Based Cryptography." In Security and Privacy Assurance in Advancing Technologies: New Developments, edited by Hamid Nemati, 60-66. Hershey, PA: IGI Global, 2011. https://doi.org/10.4018/978-1-60960-200-0.ch005

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Abstract

We expose a potential vulnerability in the common use of password-based cryptography. When employing a user-chosen password to generate cryptographic keys which themselves are larger than the digest size of the underlying hash function, a part of the resulting key is produced deterministically and this, in turn, may lead to an exploitable weakness.

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