A Forward-secure Multisignature Scheme based on ElGamal Type
Nong Liang-qin · Information Security and Communications Privacy · 2007
A forward-secure multisignature scheme is proposed based on ElGamal digital signature. The scheme can realize that an adversary cannot forge multisignature generated before even if all the current signer?s keys are compromised,that is,the previously generated multisignature remains valid. The forward security relies on the strong-RSA assumption,and the scheme can effectively resist forge attack and replay attack. In addition,it can raise the speed of signature genera-tion by introduction of pre-calculation. Thus it?s a safe,efficient and practical multisignature scheme.