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Public Key Infrastructures (PKI) and Digital Evidence

Research Highlights

  • New approaches to digital evidence. Digital evidence, such as digital signatures, is of crucial importance in the emerging digitally operating economy because it is easy to transmit, archive, search, and verify. Nevertheless the initial promises of the usefulness of digital signatures were too optimistic. This calls for a systematic treatment of digital evidence. In [Mau04] a foundation for reasoning about digital evidence systems and legislation is provided, thereby identifying the roles and limitations of digital evidence, in the apparently simple scenario where it should prove that an entity A agreed to a digital contract d. The approach is in sharp contrast to the current general views documented in the technical literature and in digital signature legislation. An entirely new view of the concepts of certification, time-stamping, revocation, and other trusted services, is proposed, potentially leading to new and more sound business models for trusted services.

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