该方案不要求可信中心的存在。
Especially, the scheme does not ask for the existence of the trusted center.
当原始签名者发现代理签名者不诚实时，该体制可以通过可信中心有效地撤销代理签名者的签名权。
In this scheme, when an original signer finds that a proxy signer is malicious, he can revoke the malicious proxy signers signing capability efficiently through a trusted authority.
针对现有的基于身份签名系统的密钥托管问题，提出了一种高效的基于身份的无可信中心签名方案。
This paper proposed an efficient ID-based signature scheme without trusted party against the problem of key escrow of ID-based signature system.
与此同时，引入可信中心也会成为网络的瓶颈，如果这个可信中心被攻破，那么整过网络将变瘫痪。
At the same time, the introduction of trusted networks will become a bottleneck, if the trusted is compromised, then the whole network will become paralyzed.
通过对这些方案的分析，发现在这些方案中签名者必须绝对信任一个可信中心机构(我们称之为ta)。
After analyzing these schemes, they found that the signer need to trust a Trusted-Authority (we called TA) in th.
通过对这些方案的分析，发现在这些方案中签名者必须绝对信任一个可信中心机构(我们称之为ta)。
After analyzing these schemes, they found that the signer need to trust a Trusted-Authority (we called TA) in th.
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