Time Delay Bypass refers to any method or vulnerability that allows an adversary to circumvent or significantly reduce the intended sequential execution time of a cryptographic function or protocol. This action defeats the security guarantees provided by functions designed to enforce a minimum computation duration. It undermines the integrity of time-based security mechanisms.
Context
The prevention of time delay bypass attacks is paramount for cryptographic primitives like Verifiable Delay Functions (VDFs), which are specifically constructed to ensure that a computation takes a fixed, long sequential time. In blockchain applications, such as fair leader election or randomness generation, protection against these bypasses is crucial for maintaining network security and preventing malicious manipulation.
Cryptanalysis revealed that parallel computation bypasses the sequential time delay in VDFs, challenging the security of verifiable randomness primitives.
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