Cryptology ePrint Archive: Report 2002/058
Construction of UOWHF: Tree Hashing Revisited
Abstract: We present a binary tree based parallel algorithm for extending the domain of a UOWHF.
The key length expansion is $2m$ bits for $t=2$; $m(t+1)$ bits for $3\leq t\leq 6$ and
$m\times(t+\lfloor\log_2 (t-1)\rfloor)$ bits for $t\geq 7$, where $m$ is the length
of the message digest and $t\geq 2$ is the height of the binary tree.
Category / Keywords: UOWHF, hash function, binary tree
Date: received 12 May 2002, last revised 16 Feb 2004
Contact author: palash at isical ac in
Available formats: Postscript (PS) | Compressed Postscript (PS.GZ) | BibTeX Citation
Note: The revision removes some minor but potentially confusing typos.
Version: 20040216:085103 (All versions of this report)
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