Threshold ElGamal encryption is a cryptographic scheme where a private key is divided among multiple parties, and a predetermined minimum number of these parties must cooperate to decrypt a ciphertext. This distributed key management approach enhances security by preventing any single entity from compromising the entire system. It provides robust fault tolerance.
Context
In the digital asset domain, Threshold ElGamal encryption finds applications in secure multi-party computation and decentralized custody solutions. It can protect sensitive operations, such as signing transactions or managing shared secrets, by requiring collective action from multiple key holders. This technology contributes to building more resilient and trustworthy infrastructure for digital asset management and privacy-preserving protocols.
This framework transforms Publicly Verifiable Secret Sharing from O(n) to O(1) complexity by leveraging CCA2-Secure Threshold Encryption and NIZK proofs, eliminating a critical scalability bottleneck.
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