Authentic Time-Stamps for Archival Storage

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Executive Summary

The authors study the problem of authenticating the content and creation time of documents generated by an organization and retained in archival storage. Recent regulations (e.g., The Sarbanes-Oxley act and the Securities and Exchange Commission rule) mandate secure retention of important business records for several years. This paper provides a mechanism to authenticate bulk repositories of archived documents. In the approach, a space efficient local data structure encapsulates a full document repository in a short (e.g., 32-byte) digest.

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