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首页> 外文期刊>Journal of the Chinese Institute of Engineers >Improved generic construction of chameleon hash to group elements
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Improved generic construction of chameleon hash to group elements

机译：改进了Chameleon Hash的通用建设到集团元素

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摘要

Chameleon hash functions are trapdoor one-way functions with many applications as, for example, off-line/on-line signatures and chameleon signatures. Chameleon signatures are useful to protect privacy of signatures in some business systems where signatures are not allowed to be verified universally, and off-line/on-line signatures are particularly suitable for systems with limited computing resources on-line, but enough computation power off-line, such as in smart card applications. Previous research focused on concrete constructions based on different assumptions, as well as schemes without the key-exposure problem. The main contribution of this paper is a generic construction method of structure-preserving chameleon hash from quasi-adaptive noninteractive zero-knowledge (QANIZK) and two concrete constructions from adaptive sound and simulation sound QANIZK for witness sampleable (WS) distributions proposed by Kiltz and Wee in Eurocrypt 2015, with/without key-exposure respectively. Compared with the constructions from linearly homomorphic structure-preserving signature (LHSPS), our constructions improve the efficiency, the assumptions, as well as the security guarantees.
机译：变色龙哈希函数是Trapdoor单向功能，具有许多应用，例如离线/在线签名和变色龙签名。 Chameleon签名可用于保护某些业务系统中的签名隐私，其中不允许众所周期以验证签名，并且离线/在线签名特别适用于在线计算资源有限的系统，但电源有足够的计算电源-line，例如智能卡应用程序。以前的研究专注于基于不同假设的混凝土结构，以及没有关键曝光问题的方案。本文的主要贡献是一种从准适应性非交互式零知识（Qanizk）的结构保留变色龙哈希的通用施工方法，以及来自适应性声音和仿真声音Qanizk的两个具体建筑，用于见证Kiltz和在Eurocrypt 2015中，分别与/没有键暴露。与来自线性同态结构保留签名（LHSP）的结构相比，我们的结构提高了效率，假设以及安全保证。

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