Abstract
Limiting escrow activity in time has been an important requirement for key escrow systems. Recently two protocols were proposed for limited time span key escrow and contract bidding. We investigate the proposed protocols, bring out certain issues that were neglected in the proposal and amend it in a manner that these issues will be dealt with. Our proposal does not require tamper proofness for security of the system and assumes minimal trust in the trustees of the system to achieve a more robust scheme. The importance of publicly verifiable proofs is highlighted in this paper.
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Viswanathan, K., Boyd, C., Dawson, E. (1999). Publicly Verifiable Key Escrow with Limited Time Span. In: Pieprzyk, J., Safavi-Naini, R., Seberry, J. (eds) Information Security and Privacy. ACISP 1999. Lecture Notes in Computer Science, vol 1587. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-48970-3_4
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DOI: https://doi.org/10.1007/3-540-48970-3_4
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