Definition ∞ Optimal randomness extraction is the process of converting a source of weak or biased random data into a sequence of truly uniform and unpredictable random bits. This cryptographic technique is essential when the initial random input lacks sufficient quality. It enhances the security of random numbers used in critical blockchain functions. The goal is to maximize the entropy derived from an imperfect source.
Context ∞ Optimal randomness extraction is a vital component for ensuring the security of blockchain consensus mechanisms, cryptographic key generation, and decentralized applications that rely on unpredictable outcomes. Any weakness in this process can introduce severe vulnerabilities. News reports on advancements in cryptographic security often detail new methods for strengthening random number generation.
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