Definition ∞ An entropy bound quantifies the maximum amount of uncertainty or randomness present in a cryptographic system or data set. It establishes a limit on the unpredictability of keys or random numbers, which is crucial for security. A higher entropy bound indicates a more robust system against brute-force attacks. This metric helps assess the strength of cryptographic primitives.
Context ∞ The entropy bound is a critical factor in evaluating the security of digital asset wallets, transaction signing, and blockchain consensus mechanisms. News about security vulnerabilities or cryptographic breakthroughs often relates to the effectiveness of random number generation and its associated entropy. It is a technical specification that underlies the trustworthiness of cryptographic implementations. Discussions about cryptographic security frequently reference this measure.
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