This paper proposes a new ID-based signature scheme without honest PKGs . It solves the problem of key escrow.

本文提出一个无需PKG诚实可信的一个签名方案，从根本上解决了密钥暴露的问题。

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The scheme has the structure of hierarchical PKGs, so a lower-level PKG can share the workload of secret information generation and identity authentication with a higher-level PKG.

方案具有分层的PKG结构，低层PKG可以分担高层PKG的秘密信息产生和身份认证的任务；

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The scheme has the structure of hierarchical PKGs, so a lower-level PKG can share the workload of secret information generation and identity authentication with a higher-level PKG.

方案具有分层的PKG结构，低层PKG可以分担高层PKG的秘密信息产生和身份认证的任务；

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