A Note on Practical Key Derivation Functions

Shoichi HIROSE  

IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E94-A   No.8   pp.1764-1767
Publication Date: 2011/08/01
Online ISSN: 1745-1337
DOI: 10.1587/transfun.E94.A.1764
Print ISSN: 0916-8508
Type of Manuscript: LETTER
Category: Cryptography and Information Security
key derivation,  pseudorandom function,  counter mode,  output feedback mode,  

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In this article, we first review key derivation functions specified in NIST SP 800-108 and one proposed by Krawczyk. Then, we propose parallelizable key derivation functions obtained by modifying or using the existing schemes. We also define two measures of efficiency of key derivation functions, and evaluate their performance in terms of the two measures.