Large Key Sizes and the Security of Password-Based Cryptography

Kent D. Boklan
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Kent D. Boklan: Queens College, USA

International Journal of Information Security and Privacy (IJISP), 2009, vol. 3, issue 1, 65-72

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.

Date: 2009
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Persistent link: https://EconPapers.repec.org/RePEc:igg:jisp00:v:3:y:2009:i:1:p:65-72

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