We present a "content integrity service" for long- lived digital documents, especially for objects stored in digital repositories. The goal of the service is to demonstrate that information in the repository is authentic and has not been unintentionally or maliciously altered, even after its bit representation in the repository has undergone one or more transformations. We describe our design for an efficient, secure service that achieves this, and our implementations of two prototypes of such a service that we developed, most recently for DSpace. Our solution relies on one-way hashing and digital time- stamping procedures. Our service applies not only to transformations to archival content such as format changes, but also to the introduction of new cryptographic primitives, such as the new one-way hash function family that will be chosen by NIST in the competition that was recently announced [10]. In the face of recent attacks on hash functions, this feature is absolutely necessary to the design of an integrity- preserving system that is meant to endure for decades.
The FreePint Family is a family of resources to help information workers be more effective, raise the value of information in their organisations and contribute to success.
'FreePint... provides most of my professional development because it won't come through work and [other resources] just don't cut it.'
FUMSI Forum: Do you have a research question? Post it to the FUMSI Forum, where professionals share Q&A and useful tips on how to Find, Use, Manage and Share Information. It's free.
FreePint Shop:
VIP LiveWire:
