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.