Signature Bouquets Immutability for Aggregated Condensed Signatures 1st Edition by Einar Mykletun, Maithili Narasimha, Gene Tsudik ISBN 9783540301080
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Authors:Einar Mykletun, Maithili Narasimha; Gene Tsudik , Tags:Computer Security — ESORICS 2004 , Author sort:Einar Mykletun, Maithili Narasimha & Tsudik, Gene , Languages:Languages:eng , Published:Published:Jul 2004
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ISBN 13: 9783540301080
Author: Einar Mykletun, Maithili Narasimha, Gene Tsudik
Database outsourcing is a popular industry trend which involves organizations delegating their data management needs to an external service provider. Since a service provider is almost never fully trusted, security and privacy of outsourced data are important concerns.
This paper focuses on integrity and authenticity issues in outsourced databases. Whenever someone queries a hosted database, the returned results must be demonstrably authentic: the querier needs to establish – in an efficient manner – that both integrity and authenticity (with respect to the actual data owner) are assured. To this end, some recent work [19] examined two relevant signature schemes: a condensed variant of batch RSA [3] and an aggregated signature scheme based on bilinear maps [6]
In this paper, we introduce the notion of immutability for aggregated signature schemes. Immutability refers to the difficulty of computing new valid aggregated signatures from a set of other aggregated signatures. This is an important feature, particularly for outsourced databases, since lack thereof enables a frequent querier to eventually amass enough aggregated signatures to answer other (un-posed) queries, thus becoming a de facto service provider. Since prior work does not offer immutability, we propose several practical techniques to achieve it.
Signature Bouquets Immutability for Aggregated Condensed Signatures 1st Table of contents:
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Introduction
1.1 Motivation and Background
1.2 Problem Definition: Signature Aggregation and Immutability
1.3 Key Contributions
1.4 Organization of the Paper -
Preliminaries
2.1 Cryptographic Signatures: Basic Concepts
2.2 Aggregated Signatures and Their Benefits
2.3 Condensed Signatures and Their Applications
2.4 Immutability in Cryptographic Systems -
Signature Bouquets: Concept and Definition
3.1 Overview of Signature Bouquets
3.2 Properties and Characteristics of Signature Bouquets
3.3 Aggregation of Signatures: Techniques and Challenges
3.4 Relation to Other Signature Schemes -
Immutability for Aggregated Condensed Signatures
4.1 Definition of Immutability in the Context of Signatures
4.2 Requirements for Achieving Immutability
4.3 Technical Challenges and Solutions
4.4 Formal Security Model for Immutability -
Construction of Immutability-Preserving Signature Bouquets
5.1 Design of the Aggregation Scheme
5.2 Cryptographic Tools and Techniques Used
5.3 Proof of Immutability for the Proposed Scheme
5.4 Efficiency and Scalability Considerations -
Applications of Immutability in Signature Aggregation
6.1 Digital Signatures in Blockchain and Distributed Systems
6.2 Efficient Verification in Large-Scale Systems
6.3 Use Cases in Secure Communication and Data Integrity
6.4 Applications in Legal and Financial Transactions -
Experimental Results and Evaluation
7.1 Experimental Setup and Evaluation Metrics
7.2 Comparison with Existing Signature Aggregation Techniques
7.3 Performance Analysis: Time and Space Complexity
7.4 Results on Immutability and Security -
Discussion and Future Work
8.1 Insights from Immutability in Signature Aggregation
8.2 Open Problems and Limitations
8.3 Potential for Further Optimizations
8.4 Directions for Future Research in Cryptographic Signatures
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