Insertion security, in the context of authenticated data structures, refers to the property that an adversary cannot add a new element to the structure without detection. It ensures that only authorized parties can modify the data structure by appending new entries. This property maintains the integrity of the data structure against unauthorized additions.
Context
Insertion security is a vital characteristic for append-only ledgers like blockchains, where new transactions or blocks are continuously added. It guarantees that the historical record cannot be altered by inserting false data. Strong insertion security is fundamental to the immutability and reliability of blockchain data, preventing malicious modifications to the ledger.
Cornucopia introduces insertion-secure accumulators to efficiently aggregate contributions for VDF-based randomness, securing the foundation of decentralized systems.
This new Cornucopia framework combines Verifiable Delay Functions with accumulators to create a scalable, bias-resistant randomness beacon secure with only one honest participant.
Research demonstrates a scalable distributed randomness beacon by enforcing verifiable inclusion of all entropy contributions using insertion-secure accumulators.
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