关键词: 代理签名方案, 门限签名, 多重加密, 前向安全

Abstract: Proxy multi-signature schemes can be implemented a proxy signature on behalf of multiple original signers. Threshold signature scheme does not require the participation of all members to form a valid signature. As long as most of the members participate, the signature is valid. This paper discusses a multi-threshold proxy signature scheme which is a combination of the two signature ways mentioned above. The program has both the multiplicity of agency, but also has the flexibility of threshold. Meanwhile, use of forward secure features, the proxy secret key for the timing of updates, both to ensure the security of the scheme, and also can control the proxy signature time of the proxy signer.

Key words: proxy signature, threshold digital signature, multisigncryption scheme, forward secure