## CryptoDB

### Paper: Invertible Universal Hashing and the TET Encryption Mode

Authors: Shai Halevi URL: http://eprint.iacr.org/2007/014 Search ePrint Search Google This work describes a mode of operation, TET, that turns a regular block cipher into a length-preserving enciphering scheme for messages of (almost) arbitrary length. When using an n-bit block cipher, the resulting scheme can handle input of any bit-length between n and 2^n and associated data of arbitrary length. The mode TET is a concrete instantiation of the generic mode of operation that was proposed by Naor and Reingold, extended to handle tweaks and inputs of arbitrary bit length. The main technical tool is a construction of invertible universal hashing'' on wide blocks, which is as efficient to compute and invert as polynomial-evaluation hash.
##### BibTeX
@misc{eprint-2007-13296,
title={Invertible Universal Hashing and the TET Encryption Mode},
booktitle={IACR Eprint archive},
keywords={secret-key cryptography /},
url={http://eprint.iacr.org/2007/014},
note={Extended abstract appears in the proceedings of CRYPTO 2007 shaih@alum.mit.edu 13657 received 12 Jan 2007, last revised 24 May 2007},
author={Shai Halevi},
year=2007
}