PKC
2000
Springer
14 years 4 months ago
2000
Springer
Abstract. Efficient secure time-stamping schemes employ a 2-level approach in which the time-stamping service operates in rounds. We say that a time-stamping service is accountable...
CRYPTO
1990
Springer
14 years 4 months ago
1990
Springer
The prospect of a world in which all text, audio, picture, and video documents are in digital form on easily modi able media raises the issue of how to certify when a document was...