A Dynamic Digital Signature Scheme Without Third Parties
نویسندگان
چکیده
We propose a digital signature scheme for dynamic coalitions. Particularly, we enable members to join and leave. Our scheme does not need trusted or oblivious third parties (TTPs or OTPs). In this distributed scheme there is a changing secret group key dependent on the members in the group. Each member’s secret key remains the same for all group compositions. The downside of this approach is that we need to keep track of the signatures signed by each group composition to prevent backlogging. We use One-Way Accumulators to minimise the amount of information that needs to be saved for this.
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