Paper 2007/317 Original: eprint.iacr.org/2007/317 ↗
Improving Upon the TET Mode of Operation
Abstract
Naor and Reingold had proposed the construction of a strong pseudo-random permutation (SPRP) by using a layer of ECB encryption between two layers of invertible block-wise universal hash functions. At Crypto 2007, Halevi presented constructions of invertible block-wise universal hash functions and a new mode of operation (called TET) based on them. In this paper, we present a new mode of operation called {\heh} using the Naor-Reingold approach. This is built using a new construction of invertible block-wise universal hash function. The new construction improves over Halevi's construction by removing restrictions on the hashing key. This in turn, leads to {\heh} improving over TET by allowing more efficient encryption and decryption of variable length messages as well as supporting better key agility. For the important application of disk encryption, we present a variant called {\hehfp} which has better key agility than TET.
Metadata
- Available format(s)
PDF- Publication info
- Preprint.
- History
- 2007-08-16: last updated
- 2007-08-16: published
- Short URL
- https://ia.cr/2007/317
- License
- https://creativecommons.org/licenses/by/4.0/
BibTeX
@misc{cryptoeprint:2007/317,
author = {Palash Sarkar},
title = {Improving Upon the TET Mode of Operation},
howpublished = {Cryptology {ePrint} Archive, Paper 2007/317},
year = {2007},
url = {https://eprint.iacr.org/2007/317}
}