Concurrency control in groupware systems
SIGMOD '89 Proceedings of the 1989 ACM SIGMOD international conference on Management of data
GroupWare: Computer Support for Business Teams
GroupWare: Computer Support for Business Teams
Discretionary Enforcement of Electronic Contracts
EDOC '02 Proceedings of the 6th International Enterprise Distributed Object Computing Conference
Managing Contracts in Virtual Project Supply Chains
PRO-VE '02 Proceedings of the IFIP TC5/WG5.5 Third Working Conference on Infrastructures for Virtual Enterprises: Collaborative Business Ecosystems and Virtual Enterprises
Performance of Batch-Based Digital Signatures
MASCOTS '02 Proceedings of the 10th IEEE International Symposium on Modeling, Analysis, and Simulation of Computer and Telecommunications Systems
Identifying requirements for Business Contract Language: a Monitoring Perspective
EDOC '03 Proceedings of the 7th International Conference on Enterprise Distributed Object Computing
.NET Security and Cryptography
.NET Security and Cryptography
A unified behavioural model and a contract language for extended enterprise
Data & Knowledge Engineering - Special issue: Contract-driven coordination and collaboration in the internet context
The business case for B2B e-contracting
ICEC '04 Proceedings of the 6th international conference on Electronic commerce
Active meta modeling support for evolving e-contracts
ER '07 Tutorials, posters, panels and industrial contributions at the 26th international conference on Conceptual modeling - Volume 83
An e-contracting reference architecture
Journal of Systems and Software
Contract E-Negotiation in Agricultural Supply Chains
International Journal of Electronic Commerce
A new fair non-repudiation protocol for secure negotiation and contract signing
Proceedings of the 2006 International Conference on Privacy, Security and Trust: Bridge the Gap Between PST Technologies and Business Services
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Business-to-business electronic contracts provide a specification of the agreed value exchange and guarantee legal protection to companies during electronic trading relations. Important features that distinguish e-contracts from traditional paper contracts are the possibilities for automatic establishment and enactment, the more detailed e-contract content specification and the frequency of e-contract content updating. In this paper, we discuss these e-contract features and the technology requirements to which they lead. We describe two conceptual architectures for the support of updates in digitally signed e-contracts. We demonstrate that the straightforward approach is inefficient and therefore inadequate for supporting high update rates in an automated, dynamic, communication-intensive contract enactment environment. The second approach that we describe allows companies to handle e-contract updates in a more efficient and simplified manner. It introduces a new type of Trusted Third Party that can be used for the support of e-contract updates. This paper provides the required conceptual foundation for the construction of an important part of an e-contract management system.