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- In appearing of disputation, the verifier could reveal the real identity of the proxy signer with the help of the GP. 当出现争议时,验证者可通过代理群管理员追查出代理签名者的身份。
- This paper presents an improved scheme that can against the proxy signer’s linkability attacks. 为了避免上述不足之处,给出了一个防止代理签名者连接性攻击的改进方案。
- Proxy signer privacy protection is one of the important researches for the strong proxy signature. 摘要 代理签名人身份保密是强代理签名的一个重要研究方向。
- This proxy sign noble elegant, propagandizes the brand first choice! 此代理牌高贵典雅,是宣传品牌的首选!
- Compared with the traditional one-time proxy signature,this scheme can effectively restrict the times of signature that the proxy signer can make. 与传统的授权代理签名方案相比,该方案减少了时间开销,降低了通信量,并且能够有效地限制代理签名者的签名次数。
- However,their scheme is insecure by presenting a forgery attack,any receiver can impersonate the proxy signer to sign any message without holding the responsibility. 该文给出的一种攻击方案表明他们的方案是不安全的,任何代理签名的接收者都可以假冒代理人对任意的消息生成有效的签名。
- Analysis indicates that it is secure against the proxy signer's forgery attack, and even against the malice attack of the ally of the proxy signer and the PKG. 针对此方案的缺陷,提出了改进措施,分析表明改进后的方案是安全的,可抵抗代理人恶意的伪造攻击,还可以抵抗代理人和私钥产生中心联合的恶意攻击。
- Moreover, a proxy signer must cooperate with the SEM to generate a valid proxy signature, which makes the new scheme have an effective and fast proxy revocation. 新方案不仅满足代理签名的所有安全要求,而且代理签名人只有与SEM合作才能生成有效的签名,使得方案具有快速撤销的功。
- Introduced a new hybrid proxy multi-signature, it actually was an arbitrary combination of some ordinary signers' partial signatures and the proxy signer's proxy signature. 摘要提出了一种新的混合代理多签名方案,它是由一些原始签名人的部分签名和代理签名人的签名的随意组合。
- In this scheme,the proxy signer can sign a signature N times at most.If he violates the condition,his private key will be revealed. 在新方案中,若代理签名人签名超过证书上规定的次数,则他的私钥就会被破解(对原始签名人无影响),从而真正做到了对签名代理权的控制。
- Since the scheme allows the proxy signer use different alias to sign the document in each time,it can be adaptable applied to many practical applications. 由于方案能保证代理签名人每次以不同的别名进行有效的签名,因此还具有很好的使用灵活性。
- In order to protect advantages of the original signer and the proxy signer,an ID-based designated-verifier proxy signature scheme without trusted PKG is proposed for the first time. 为了解决无条件信任PKG带来的问题,保护原始签名人和代理签名人的利益,首次提出了一种基于身份无可信中心的指定验证人代理签名方案。
- Second,we present a new strong proxy signature scheme with proxy signer privacy protection which can keep the property of the strong unforgeability and has a more compact signature. 给出一个新的代理签名人身份保密的强代理签名方案,该方案具有强不可伪造性且签名结果更简化。
- How ever, we will show that their modification scheme is also insecure.Any original signer or proxy signer can forge a valid proxy signature, and the delegation time can he revised. 本文指出,周红生等的方案也是不安全的,任一原始签名人或任一代理人都能生成有效的代理多重签名,而且可以任意修改代理签名的期限。
- Furthermore, the proxy signer’s proxy signing capability can be revoked if the original signer needs. 另外,该方案能根据原始签名人的需要,撤消代理签名人的代理签名权。
- With proxy signature, an original signer can entrust his signing authority to a proxy signer. 摘要在代理签名方案中,原始签名人能将其数字签名权力委托给代理签名人。
- Proxy signature scheme allows an original signer to delegate his signing capability to a proxy signer. 代理签名允许原始签名者将自己的签名权委托给代理签名人。
- Proxy signature allows an original signer to delegate his/her signing capability to a proxy signer such that the proxy signer can sign messages on behalf of the original signer. 顾名思义,代理签名让原始签名者可以将其数字签名权力委托给代理签名者,使其能够代理原始签名者签发指定的数字消息;
- Proxy signature allows an original signer to delegate his/her signing power to a proxy signer such that the proxy signer can sign messages on behalf of the original signer. 代理签名是指原始签名人将签名权力委托给代理签名人,由代理签名人代表原始签名人对消息进行签名。