For security requirements, this new scheme satisfies confidentiality, unforgeability and public verifiability.

在安全性方面，新方案满足机密性、不可伪造性和可公开验证性。

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Firstly, on the safety analysis of the first signature scheme, points out that it does not satisfy the unforgeability.

首先，对首个代理盲签名方案进行安全性分析，指出其不满足不可伪造性。

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This scheme realizes the anonymity of identity of bidders, unforgeability and public verifiability of successful bidders, etc.

该方案实现了参与竞标公司身份的匿名性、中标者的不可否认性、可公开验证性等安全性问题。

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