International Business Machines Corporation
Selective generation of secure signatures in a distributed storage network

Abstract:

A method begins by a processing module of a dispersed storage network (DSN) receiving a signature contribution request and payload, logging the request and determining whether a timestamp for the request compares favorably to a timing template. When the timestamp for the request compares favorably to the timing template the method continues with the processing modules determining whether the request compares favorably to a functionality template and when it compares favorably to a functionality template retrieving a key share based on sharing function parameters and outputting a signature result. When the timestamp for the request does not compare favorably to the timing template or the request does not compare favorably to the functionality template the method continues with the processing module outputting a signature contribution request rejection message.