Forward-Secure Multi-Signature in the Standard Model: Security Model and Construction
标准模型下的前向安全多重签名:安全性模型和构造

The formal security model of forward-secure multi-signature is examined and a forward-secure multi-signature scheme with provable security is proposed. Even if the current secret keys of all the signers are exposed, all the signatures pertaining to previous periods are still valid in this scheme. The presented scheme has proven to be secure in the standard model.