Differential Power Analysis in the Presence of Hardware Countermeasures
CHES '00 Proceedings of the Second International Workshop on Cryptographic Hardware and Embedded Systems
Power Analysis Attacks: Revealing the Secrets of Smart Cards (Advances in Information Security)
Power Analysis Attacks: Revealing the Secrets of Smart Cards (Advances in Information Security)
A High-Resolution Phase-Based Waveform Matching and Its Application to Side-Channel Attacks
IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
An Efficient Method for Random Delay Generation in Embedded Software
CHES '09 Proceedings of the 11th International Workshop on Cryptographic Hardware and Embedded Systems
Efficient use of random delays in embedded software
WISTP'07 Proceedings of the 1st IFIP TC6 /WG8.8 /WG11.2 international conference on Information security theory and practices: smart cards, mobile and ubiquitous computing systems
Formal framework for the evaluation of waveform resynchronization algorithms
WISTP'11 Proceedings of the 5th IFIP WG 11.2 international conference on Information security theory and practice: security and privacy of mobile devices in wireless communication
Generic side-channel countermeasures for reconfigurable devices
CHES'11 Proceedings of the 13th international conference on Cryptographic hardware and embedded systems
A code morphing methodology to automate power analysis countermeasures
Proceedings of the 49th Annual Design Automation Conference
PICARO: a block cipher allowing efficient higher-order side-channel resistance
ACNS'12 Proceedings of the 10th international conference on Applied Cryptography and Network Security
An efficient method for eliminating random delays in power traces of embedded software
ICISC'11 Proceedings of the 14th international conference on Information Security and Cryptology
A statistical model for DPA with novel algorithmic confusion analysis
CHES'12 Proceedings of the 14th international conference on Cryptographic Hardware and Embedded Systems
A novel circuit design methodology to reduce side channel leakage
SPACE'12 Proceedings of the Second international conference on Security, Privacy, and Applied Cryptography Engineering
Controversy Corner: Efficient Hamming weight-based side-channel cube attacks on PRESENT
Journal of Systems and Software
Efficient removal of random delays from embedded software implementations using hidden markov models
CARDIS'12 Proceedings of the 11th international conference on Smart Card Research and Advanced Applications
Proceedings of the First Workshop on Cryptography and Security in Computing Systems
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Random delays are often inserted in embedded software to protect against side-channel and fault attacks. At CHES 2009 a new method for generation of random delays was described that increases the attacker's uncertainty about the position of sensitive operations. In this paper we show that the CHES 2009 method is less secure than claimed. We describe an improved method for random delay generation which does not suffer from the same security weakness. We also show that the paper's criterion to measure the security of random delays can be misleading, so we introduce a new criterion for random delays which is directly connected to the number of acquisitions required to break an implementation. We mount a power analysis attack against an 8-bit implementation of the improved method verifying its higher security in practice.