Definition ∞ Weak randomness in cryptography refers to the use of a random number generator that produces outputs which are statistically predictable or non-uniform. When cryptographic operations, such as key generation or nonce creation, rely on weak randomness, the security of the entire system is severely compromised. Attackers can exploit this predictability to deduce secret values, leading to unauthorized access to digital assets or the ability to forge signatures. It is a fundamental flaw that undermines cryptographic strength.
Context ∞ Instances of weak randomness are frequently cited in news concerning security vulnerabilities and exploits in digital asset systems, particularly when private keys are compromised. The ongoing challenge for developers is to ensure high-quality, unpredictable entropy sources for all cryptographic functions. This topic remains a critical area of research and implementation focus for enhancing the robustness of blockchain security.
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