CryptoScan: A Secured Scan Chain Architecture
Authors:
- S. BanerjeeSBS. Banerjee
- D. RoyChowdhuryDRD. RoyChowdhury
- B.B. BhattacharyaBBB.B. Bhattacharya
- 1 January 2005
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- No. 10817735,p. 348-353
Abstract
Scan based testing is a powerful and popular test technique. However the scan chain can be used by an attacker to decipher the cryptogram. The present paper shows such a side-channel attack on LFSR-based stream ciphers using scan chains. The paper subsequently discusses a strategy to build the scan chains in a tree based pattern with a selfchecking compactor. It has been shown that such a structure prevents such scan based attacks but does not compromise on fault coverage.Keywords
This publication has 5 references indexed in Scilit:
- An efficient scan tree design for test time reduction2004
- Efficient implementation of cryptographically useful "large" boolean functionsIEEE Transactions on Computers, 2003
- Reducing scan shifts using folding scan trees2003
- On Correlation-immune functions2001
- Correlation-immunity of nonlinear combining functions for cryptographic applications (Corresp.)IEEE Transactions on Information Theory, 1984