## CryptoDB

### Paper: Towards Side-Channel Resistant Block Cipher Usage or Can We Encrypt Without Side-Channel Countermeasures?

Authors: Jorge Guajardo Bart Mennink URL: http://eprint.iacr.org/2010/015 Search ePrint Search Google Based on re-keying techniques by Abdalla, Bellare, and Borst [1,2], we consider two black-box secure block cipher based symmetric encryption schemes, which we prove secure in the physically observable cryptography model. They are proven side-channel secure against a strong type of adversary that can adaptively choose the leakage function as long as the leaked information is bounded. It turns out that our simple construction is side-channel secure against all types of attacks that satisfy some reasonable assumptions. In particular, the security turns out to be negligible in the block ciphers block size n, for all attacks. We also show that our ideas result in an interesting alternative to the implementation of block ciphers using different logic styles or masking countermeasures.
##### BibTeX
@misc{eprint-2010-22916,
title={Towards Side-Channel Resistant Block Cipher Usage or Can We Encrypt Without Side-Channel Countermeasures?},
booktitle={IACR Eprint archive},
keywords={implementation / side-channel resistance, security model, re-keying techniques, leakage resistance, block ciphers},
url={http://eprint.iacr.org/2010/015},
note={ jorge.guajardo@philips.com 14620 received 11 Jan 2010},
author={Jorge Guajardo and Bart Mennink},
year=2010
}