A Proactive Secret Sharing Scheme Based on Elliptic Curve Cryptography

For long-lived and sensitive secrets, it is insufficient to apply the classic cryptography as well as ( ) threshold cryptosystem. Only proactive secret sharing can properly protect them, where the shares are periodically renewed without changing the secret. Hence, the adversary willing to learn the secret needs to break up or more shareholders in the same time period. If the time period and the threshold value are selected properly, proactive secret sharing can maintain the overall security of the information. This article presents a proactive verifiable secret sharing scheme based on elliptic curve cryptosystem, which is secure and effective.