搜索结果: 1-15 共查到“definitions”相关记录70条 . 查询时间(0.057 秒)
Subversion-Resistant Commitment Schemes: Definitions and Constructions
Commitment schemes subversion security common reference string model
2019/9/23
A commitment scheme allows a committer to create a commitment to a secret value, and later may open and reveal the secret value in a verifiable manner. In the common reference string model, commitment...
A critique of game-based definitions of receipt-freeness for voting
E-voting receipt-freeness privacy
2019/7/24
We analyse three game-based definitions of receipt-freeness; uncovering soundness issues with two of the definitions and completeness issues with all three. Hence, two of the definitions are too weak,...
We explore definitions of coercion resistance in the computational model of cryptography; discovering all but one are too weak (i.e., satisfiable by voting systems that are not coercion resistant) and...
Leakage-Resilient Group Signature: Definitions and Constructions
group signature full anonymity full traceability
2019/1/9
Group signature scheme provides group members a way to sign messages without revealing their identities. Anonymity and traceability are two essential properties in a group signature system. However, t...
Definitions for Plaintext-Existence Hiding in Cloud Storage
Cloud Storage Side-channel analysis Information Leakage
2018/8/20
Cloud storage services use deduplication for saving bandwidth and storage. An adversary can exploit side-channel information in several attack scenarios when deduplication takes place at the client si...
Simplifying Game-Based Definitions: Indistinguishability up to Correctness and Its Application to Stateful AE
indistinguishability oracle silencing provable security
2018/6/5
Often the simplest way of specifying game-based cryptographic definitions is apparently barred because the adversary would have some trivial win. Disallowing or invalidating these wins can lead to com...
Leakage-Resilient Authenticated Encryption with Misuse in the Leveled Leakage Setting: Definitions, Separation Results, and Constructions
Leakage-resilience authenticated encryption leveled implementations
2018/5/28
We propose definitions and constructions of authenticated encryption (AE) schemes that offer security guarantees even in the presence of side-channel leakages and nonce misuse. This is part of an impo...
Approximate and Probabilistic Differential Privacy Definitions
differential privacy foundations
2018/3/23
This technical report discusses three subtleties related to the widely used notion of differential privacy (DP). First, we discuss how the choice of a distinguisher influences the privacy notion and w...
No-Match Attacks and Robust Partnering Definitions – Defining Trivial Attacks for Security Protocols is Not Trivial
protocols definitions partnering
2017/9/1
An essential cornerstone of the definition of security for key exchange protocols is the notion of partnering. It defines when two protocol instances can be considered to have communicated with each o...
Updatable Tokenization: Formal Definitions and Provably Secure Constructions
Formal Definitions Provably Secure Constructions
2017/7/24
Tokenization is the process of consistently replacing sensitive elements, such as credit cards numbers, with non-sensitive surrogate values. As tokenization is mandated for any organization storing cr...
Subtleties in Security Definitions for Predicate Encryption with Public Index
predicate encryption with public index predicate key-encapsulation mechanism semantic security definition
2017/5/26
We take a critical look at established security definitions for predicate encryption (PE) with public index under chosen-plaintext attack (CPA) and under chosen-ciphertext attack (CCA). In contrast to...
Thinking critically about whole-grain definitions: summary report of an interdisciplinary roundtable discussion at the 2015 Whole Grains Summit
definitions interdisciplinary whole grain whole-grain foods standard methods HEALTHGRAIN health benefits
2018/12/19
Definitions for whole grain (WG) have been published by governments, the food industry, and grain organizations and generally fall into 2 categories: WG and WG food. WG definitions focus on the princi...
Response to `Local and global definitions of time:Cosmology and quantum theory'
Local global definitions time Cosmology quantum theory
2016/6/15
I will discuss the notion of time and spatial finiteness from the perspective of observational cosmology. Our observed universe is well described at early times by small fluctuations in the spatial gr...
Local and global definitions of time:Cosmology and quantum theory
Cosmology relational time spatial extent time
2016/6/15
I will give a broad overview of what has become the standard paradigm in cosmology. I will describe the relational (\`{a} la Leibnitz) notion of time that is often used in cosmological calculations an...
Standard definitions of overweight and central adiposity for determining diabetes risk in Japanese Americans
Type 2 diabetes Asian Americans obesity
2016/6/14
Despite having lower average body mass indexes
(BMIs) than do whites, Asians are at high risk of type 2 diabetes,
possibly because of their greater central adiposity. The criteria
for identifying i...