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On the relations between non-interactive key distribution, identity-based encryption and trapdoor discrete log groups

机译：关于非交互式密钥分发，基于身份的加密和陷阱门离散日志组之间的关系

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This paper investigates the relationships between identity-based non-interactive key distribution (ID-NIKD) and identity-based encryption (IBE). It provides a new security model for ID-NIKD, and a construction that converts a secure ID-NIKD scheme satisfying certain conditions into a secure IBE scheme. This conversion is used to explain the relationship between the ID-NIKD scheme of Sakai, Ohgishi and Kasahara and the IBE scheme of Boneh and Franklin. The paper then explores the construction of ID-NIKD and IBE schemes from general trapdoor discrete log groups. Two different concrete instantiations for such groups provide new, provably secure ID-NIKD and IBE schemes. These schemes are suited to applications in which the Trusted Authority is computationally well-resourced, but clients performing encryption/decryption are highly constrained.
机译：本文研究了基于身份的非交互式密钥分发（ID-NIKD）与基于身份的加密（IBE）之间的关系。它为ID-NIKD提供了新的安全模型，并提供了一种将满足某些条件的安全ID-NIKD方案转换为安全IBE方案的构造。此转换用于说明Sakai，Ohgishi和Kasahara的ID-NIKD方案与Boneh和Franklin的IBE方案之间的关系。然后，本文从一般的活板门离散日志组中探索了ID-NIKD和IBE方案的构造。此类组的两个不同的具体实例提供了新的，可证明是安全的ID-NIKD和IBE方案。这些方案适用于受信任的机构在计算上资源丰富，但执行加密/解密的客户端受到严格限制的应用。

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