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A Machine-Checked Proof of Security for AWS Key Management Service
Provable-Security Machine-Checked Proof Key Management
2019/9/19
We present a machine-checked proof of security for the domain management protocol of Amazon Web Services' KMS (Key Management Service) a critical security service used throughout AWS and by AWS custom...
Side-Channel Countermeasures' Dissection and the Limits of Closed Source Security Evaluations
Side-Channel Attacks Security Evaluations Certification
2019/9/16
We take advantage of a recently published open source implementation of the AES protected with a mix of countermeasures against side-channel attacks to discuss both the challenges in protecting COTS d...
Security Reductions for White-Box Key-Storage in Mobile Payments
White-box cryptography secure key storage hardware-binding
2019/9/16
The goal of white-box cryptography is to provide security even when the cryptographic implementation is executed in adversarially controlled environments. White-box implementations nowadays appear in ...
On the (In)security of Kilian-Based SNARGs
Fiat-Shamir Kilian's protocol interactive proofs
2019/9/5
The Fiat-Shamir transform is an incredibly powerful technique that uses a suitable hash function to reduce the interaction of general public-coin protocols. Unfortunately, there are known counterexamp...
Security of Symmetric Primitives against Key-Correlated Attacks
Key-correlated attack related-key attack key-dependent-message attack
2019/9/5
We study the security of symmetric primitives against key-correlated attacks (KCA), whereby an adversary can arbitrarily correlate keys, messages, and ciphertexts. Security against KCA is required whe...
Graph Similarity and Its Applications to Hardware Security
Graph Similarity Hardware Reverse Engineering Hardware Trojan
2019/8/30
Hardware reverse engineering is a powerful and universal tool for both security engineers and adversaries. From a defensive perspective, it allows for detection of intellectual property infringements ...
On-Demand Ratcheting with Security Awareness
secure communication post-compromise security ratchet
2019/8/27
Ratcheting communication strengthens privacy, specifically in the presence of internal state exposures or random coin corruptions. This is called post-compromise security. There have been several such...
Security of Hedged Fiat-Shamir Signatures under Fault Attacks
signature schemes fault attacks Fiat-Shamir signatures
2019/8/22
Deterministic generation of per-signature randomness has been a widely accepted solution to mitigate the catastrophic risk of randomness failure in Fiat-Shamir type signature schemes. However, recent ...
Your Money or Your Life---Modeling and Analyzing the Security of Electronic Payment in the UC Framework
EMV Universal Composability Security Models
2019/8/19
EMV, also known as Chip and PIN, is the world-wide standard for card-based electronic payment. Its security wavers: over the past years, researchers have demonstrated various practical attacks, rangin...
Security analysis of two lightweight certi ficateless signature schemes
Certificateless cryptography Cryptanalysis Signature
2019/8/19
Certificateless cryptography can be considered as an intermediate solution to overcome the issues in traditional public key infrastructure (PKI) and identity-based public key cryptography (ID-PKC). Th...
Experience shows that most researchers and developers tend to treat plain-domains (those that are not prefixed with “www” sub-domains, e.g. “example.com”) as synonyms for their equivalent www-domains ...
Information Conservational Security with “Black Hole” Keypad Compression and Scalable One-Time Pad — A Quantum Intelligence Approach to Pre- and Post-Quantum Cryptography
Pre- and Post-Quantum Cryptography Scalable One-Time Pad (S-OTP) Information Conservational Security (ICS)
2019/8/14
Whereas it is widely deemed impossible to overcome the optimality of the one-time pad (OTP) cipher in pre- and post-quantum cryptography, this work shows that the optimality of information theoretic s...
Composable and Finite Computational Security of Quantum Message Transmission
Quantum cryptography composable security computational security
2019/8/14
Recent research in quantum cryptography has led to the development of schemes that encrypt and authenticate quantum messages with computational security. The security definitions used so far in the li...
Simulation-Sound Proofs for LWE and Applications to KDM-CCA2 Security
LWE standard model Naor-Yung
2019/8/8
The Naor-Yung paradigm is a well-known technique that constructs IND-CCA2-secure encryption schemes by means of non-interactive zero-knowledge proofs satisfying a notion of simulation-soundness. Until...
Fast Actively Secure Five-Party Computation with Security Beyond Abort
Secure Multiparty Computation Guaranteed Output Delivery Fairness
2019/7/26
Secure Multi-party Computation (MPC) with small population and honest majority has drawn focus specifically due to customization in techniques and resulting efficiency that the constructions can offer...