Importance

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Abstract

Certifying data includes having a subgroup of authorities each contribute a partial digital signature of the data to enable computation of a combined signature where the subgroup includes some, but not all, of the total number of authorities capable of applying a partial signature to the data, issuing a certificate for the data, and storing information in order to keep the subgroup of authorities accountable for the data that the subgroup of authorities contribute to eerily. In another scheme, certifying data can include having one or more lower-level authorities cause top-level authorities to receive an indication that the data is to be certified. A first subgroup of top-level authorities each applies a partial digital signature to the data. A certificate is issued containing a combined digital signature of a second subgroup of top-level authorities.

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First Claim