In this paper,two timing measurements with high precision in Linux are analyzed,especially the usage and effected factors of Time Stamp Counter are analyzed in detail.

Then respectively using high-resolution performance counter and CPU time stamp counter develop two microsecond level precision timer,each depends on multithreading and priority based schedule mechanism of Windows.

The Research and Design of Secure Digital Time-stamping Based on ECC Blind Signature;

Andthe digital time-stamping is one of the important solutions providing security services.

The scheme adds a digital time-stamp to digital signature scheme of recipient non-repudiation, which improves exsiting scheme with the advantages of time-stamp, and applies algorithm to it in order to confirm the superiority and innovation of this scheme.

Design and Security Study of Digital Time Stamp Service System;

On the basis of comparing advantage with disadvantage of present digital evidence integrality, safe digital time stamp, a new approach supported by digital signature technology, would benefit collection, storage, analysis and transfer of evidence.