Allied Agreement with Threshold Cryptography
نویسنده
چکیده
Ally is a framework for building distributed services in a federated architecture. In a federation, nodes may occupy multiple, independent administrative domains, with complex trust relationships, connected by an asynchronous, wide-area network. We present a library that implements Byzantine fault-tolerant agreement, a critical building-block service in robust distributed systems, targeted at the federation model; threshold cryptography improves the basic agreement protocol with proactive, verifiable security and improved resilience to continuous attack.
منابع مشابه
Provably secure and efficient identity-based key agreement protocol for independent PKGs using ECC
Key agreement protocols are essential for secure communications in open and distributed environments. Recently, identity-based key agreement protocols have been increasingly researched because of the simplicity of public key management. The basic idea behind an identity-based cryptosystem is that a public key is the identity (an arbitrary string) of a user, and the corresponding private key is ...
متن کاملA Fast Publicly Verifiable Secret Sharing Scheme using Non-homogeneous Linear Recursions
A non-interactive (t,n)-publicly veriable secret sharing scheme (non-interactive (t,n)-PVSS scheme) is a (t,n)-secret sharing scheme in which anyone, not only the participants of the scheme, can verify the correctness of the produced shares without interacting with the dealer and participants. The (t,n)-PVSS schemes have found a lot of applications in cryptography because they are suitable for<...
متن کاملIdentity Authentication and Key Agreement Schemes for Ad Hoc Networks
Identity authentication and key agreement schemes play significant role in ad hoc networks. In this paper, a new identity authentication scheme relies on the threshold group signature is introduced. Compared with the current schemes it is secure, efficient and adaptable to a multi-hop feature of ad hoc networks. In addition, a new key agreement scheme based on the threshold cryptography using t...
متن کاملAn Introduction to Differential Computation Analysis (DCA) on the withe-box cryptography algorithms
Advances in information and communication technologies lead to use of some new devices such as smart phones. The new devices provide more advantages for the adversaries hence with respect to them, one can define with-box cryptography. In this new model of cryptography, designers try to hide the key using as a kind of implementation. The Differential Computation Analysis (DCA) is a side channel ...
متن کاملSpecification of Dependable Trusted Third Parties
This document describes an architecture for secure service replication in an asynchronous network like the Internet, where a malicious adversary may corrupt some servers and control the network. The underlying protocols for Byzantine agreement and for atomic broadcast rely on recent developments in threshold cryptography. These assumptions are discussed in detail and compared to related work fr...
متن کامل