Key Evolving VRF

Definition ∞ Key Evolving VRF refers to a Verifiable Random Function where the cryptographic key can be updated over time without compromising the integrity of previously generated random outputs. This mechanism provides a sequence of unpredictable, publicly verifiable random numbers. The ability to evolve the key enhances long-term security and resistance to certain types of attacks. It ensures continued randomness integrity.
Context ∞ Key Evolving VRFs are a subject of advanced cryptographic research and development, particularly relevant for blockchain protocols requiring robust, unbiasable randomness for consensus or other on-chain applications. News might discuss its application in proof-of-stake systems for validator selection or in decentralized gaming for fair outcome generation. The technical complexity and security assurances are central to its consideration.