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首页> 外文期刊>Designs, Codes and Crytography >Achieving short ciphertexts or short secret-keys for adaptively secure general inner-product encryption
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Achieving short ciphertexts or short secret-keys for adaptively secure general inner-product encryption

机译:实现短密文或短密钥,以自适应地保护常规内部产品加密

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摘要

In this paper, we present two non-zero inner-product encryption (NIPE) schemes that are adaptively secure under a standard assumption, the decisional linear (DLIN) assumption, in the standard model. One of the proposed NIPE schemes features constant-size ciphertexts and the other features constant-size secret-keys. Our NIPE schemes imply an identity-based revocation (IBR) system with constant-size ciphertexts or constant-size secret-keys that is adaptively secure under the DLIN assumption. Any previous IBR scheme with constant-size ciphertexts or constant-size secret-keys was not adaptively secure in the standard model. This paper also presents two zero inner-product encryption (ZIPE) schemes each of which has constant-size ciphertexts or constant-size secret-keys and is adaptively secure under the DLIN assumption in the standard model. They imply an identity-based broadcast encryption system with constant-size ciphertexts or constant-size secret-keys that is adaptively secure under the DLIN assumption. We also extend the proposed ZIPE schemes in two directions, one is a fully-attribute-hiding ZIPE scheme with constant-size secret-keys, and the other a hierarchical ZIPE scheme with constant-size ciphertexts.
机译:在本文中,我们提出了两种非零内部乘积加密(NIPE)方案,它们在标准假设(决策线性(DLIN)假设)下在标准模型中具有自适应安全性。提出的NIPE方案之一具有恒定大小的密文,而另一个具有恒定大小的私钥。我们的NIPE方案隐含基于身份的吊销(IBR)系统,该系统具有恒定大小的密文或恒定大小的密钥,在DLIN假设下可以自适应地安全。在标准模型中,任何以前具有恒定大小密文或恒定大小秘密密钥的IBR方案都不具有自适应安全性。本文还提出了两种零内部乘积加密(ZIPE)方案,每个方案都具有恒定大小的密文或恒定大小的密钥,并且在标准模型的DLIN假设下具有自适应安全性。它们隐含基于身份的广播加密系统,该系统具有恒定大小的密文或恒定大小的密钥,在DLIN假设下可以自适应地安全。我们还从两个方向扩展了拟议的ZIPE方案,一个是具有恒定大小的秘密密钥的全属性隐藏ZIPE方案,另一个是具有恒定大小的密文的分层ZIPE方案。

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