On the Joint Security of Encryption and Signature, Revisited

On the Joint Security of Encryption and Signature, Revisited
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DOI:
10.1007/978-3-642-25385-0_9
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发表时间:
2011-12
期刊:
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影响因子:
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通讯作者:
K. Paterson;Jacob C. N. Schuldt;Martijn Stam;S. Thomson
K. Paterson;Jacob C. N. Schuldt;Martijn Stam;S. Thomson
中科院分区:
其他
文献类型:
--
作者:
K. Paterson;Jacob C. N. Schuldt;Martijn Stam;S. Thomson

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我们重新讨论了联合安全的组合公钥方案,其中一个单一的密钥对用于加密和签名原语在一个安全的方式。虽然打破了密钥分离的原则,但此类方案具有吸引人的性质,有时在实践中使用。我们给出了一个通用的结构,具有联合安全,使用IBE作为一个组件,并在标准模型中工作的组合公钥方案。我们提供了一个更有效的直接建设,也在标准模式。
We revisit the topic of joint security for combined public key schemes, wherein a single keypair is used for both encryption and signature primitives in a secure manner. While breaking the principle of key separation, such schemes have attractive properties and are sometimes used in practice. We give a general construction for a combined public key scheme having joint security that uses IBE as a component and that works in the standard model. We provide a more efficient direct construction, also in the standard model.