Thats a unique idea.You should consider the following idea to enhance your idea so that it would impact uniquely: Recently, Wang et. al presented a short group signature scheme without random oracles, and Kang et al. gave an efficient ID-based strong designated verifier signature scheme. And security proof of the two signature schemes re provided. Unfortunately, in this work  show that Wang et al.'s group signature is universally forgeable. Namely, any one can forge a group signature on arbitrary message, then an improved vision is presented; And  also show that Kang et al.'s scheme is forgeable, namely, a third party can produce a signature on arbitrary message m by a given signature information. Finally,  give the corresponding attack on the two signature schemes.
['Jianghong Zhang', 'Jianjun Xie']
I am writing a research paper on a idea Security Analysis and their Improvement of Two Signature Schemes
[{"from": "human", "value": "I am writing a research paper on a idea Security Analysis and their Improvement of Two Signature Schemes"}, {"from": "gpt", "value": "Thats a unique idea.You should consider the following idea to enhance your idea so that it would impact uniquely: Recently, Wang et. al presented a short group signature scheme without random oracles, and Kang et al. gave an efficient ID-based strong designated verifier signature scheme. And security proof of the two signature schemes re provided. Unfortunately, in this work  show that Wang et al.'s group signature is universally forgeable. Namely, any one can forge a group signature on arbitrary message, then an improved vision is presented; And  also show that Kang et al.'s scheme is forgeable, namely, a third party can produce a signature on arbitrary message m by a given signature information. Finally,  give the corresponding attack on the two signature schemes."}]