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How not to Prove Yourself: Pitfalls of the Fiat-Shamir Heuristic and Applications to Helios
fiat-shamir zero-knowledge random oracle model
2016/12/10
This paper is concerned with two variants of the transformation that appear but have not been clearly delineated in existing literature. Both variants start with the prover making a commitment. The st...
Simulatable Leakage: Analysis, Pitfalls, and new Constructions
leakage resilience side channel attack simulatable leakage
2016/1/9
In 2013, Standaert et al. proposed the notion of simulatable
leakage to connect theoretical leakage resilience with the practice of
side channel attacks. Their use of simulators, based on physical d...
Security Pitfalls of a Provably Secure Identity-based Multi-Proxy Signature Scheme
public-key cryptography proxy key
2016/1/8
An identity-based multi-proxy signature is a type of proxy signatures in which the delegation of signing right is distributed among a number of proxy signers. In this type of cryptographic primitive, ...
Side-Channel Protection by Randomizing Look-Up Tables on Reconfigurable Hardware - Pitfalls of Memory Primitives
side-channel protection FPGA masking
2016/1/3
Block Memory Content Scrambling (BMS), presented at CHES 2011, enables an effective way of first-order side-channel protection for cryptographic primitives at the cost of a significant reconfiguration...
Pitfalls in public key cryptosystems based on free partially commutative monoids and groups
word problem finitely presented group public key cryptography
2009/3/20
At INDOCRYPT 2003 Abisha, Thomas, and Subramanian proposed two public
key schemes based on word problems in free partially commutative monoids
and groups. We show that both proposals are vulnerable ...