There exist challenges in applying formal techniques to electronic contract signing protocols,which are not encountered in the analysis of key exchange and authentication protocols.

The optimistic electronic contract signing protocol is a kind of typical security protocols for fair electronic contracts exchange,which is more complicated,and brings more challenges for its formal analysis.

Electronic contract signing is an important issue in electronic commerce,while fair electronic contract signing protocol is an application model of fair exchange protocol,but there were defects in traditional fair electronic contract signing protocols.

The Study and Application of Electronic Contract Signing Protocol;

Research on abuse-free contract signing protocol.;

This essay analyzes the expense constituents in priced bill of quantities, presents the precautions to sign Contract Sample Text in contract signing and points out the necessity of supervision in the fulfillment of the contract.

This paper expounds some links and audit emphases that should be held in the process of project audit from five aspects of project bidding, contract signing, equipment and material purchasing, project visaing and final accounting for completed project.

If there are bugs in the course of contract signing,a huge economy loss will be brought to both sides of the contract,especially to the contractor.