An Attack on Linear Scan Chains for Stream Ciphers and the Impossibility of Simple Countermeasures

2021 ◽  
Author(s):  
Bijoy Das ◽  
Amit Sardar ◽  
Swapan Maiti ◽  
Abhijit Das ◽  
Dipanwita Roy Chowdhury
Keyword(s):  
Stream Ciphers ◽  
Scan Chains

Diagnose Compound Hold Time Faults Caused by Spot Delay Defects at Clock Tree

2011 ◽  
Author(s):  
Yu Huang ◽  
Wu-Tung Cheng ◽  
Ting-Pu Tai ◽  
Liyang Lai ◽  
Ruifeng Guo ◽  
...  
Keyword(s):  
Hold Time ◽  
Clock Signal ◽  
Clock Tree ◽  
Scan Testing ◽  
Design Error ◽  
Functional Logic ◽  
Scan Chains ◽  
Delay Defects

Abstract If a signal on clock tree is slower than expected due to either a design error or a manufacturing defect, it may cause complicated fault behaviors during scan-based testing. It makes the diagnosis of such defect especially difficult if the defective clock signal is used for both shift and capture operations during the scan testing, because (1) the defect induces hold time faults on scan chains during shift cycles, and (2) hold-time faults may also be introduced during capture cycles in the functional logic paths. In this paper we illustrate the failure behaviors of such clock defects and propose an algorithm to diagnose it.

Improved Distinguishers on Stream Ciphers With Certain Weak Feedback Polynomials

2012 ◽  
Vol 58 (9) ◽  
pp. 6183-6193 ◽  
Author(s):  
Martin Hell ◽  
Thomas Johansson ◽  
Lennart Brynielsson ◽  
Håkan Englund
Keyword(s):  
Stream Ciphers

Combining algebraic and side channel attacks on stream ciphers

2017 ◽  
Author(s):  
Asif Raza Kazmi ◽  
Mehreen Afzal ◽  
Muhammad Faisal Amjad ◽  
Adnan Rashdi
Keyword(s):  
Stream Ciphers ◽  
Side Channel ◽  
Side Channel Attacks

The Stream Ciphers and the Keystream Generator Based on Inverse Permutation

2010 ◽  
Vol 43 (24) ◽  
pp. 7-10
Author(s):  
V. Scholtz ◽  
J. Scholtzová
Keyword(s):  
Stream Ciphers

Stream ciphers

2014 ◽  
pp. 181-217
Author(s):  
Richard E. Blahut
Keyword(s):  
Stream Ciphers
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