Applied Cryptography and Network Security - 17th International Conference, ACNS 2019, Bogota, Colombia, June 5-7, 2019, Proceedings
Applied Cryptography and Network Security - 17th International Conference, ACNS 2019, Bogota, Colombia, June 5-7, 2019, Proceedings
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应用密码学和网络安全 - 第 17 届国际会议，ACNS 2019，哥伦比亚波哥大，2019 年 6 月 5-7 日，会议记录
DOI：
10.1007/978-3-030-21568-2_27
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Liu J
中科院分区：
文献类型：
--
作者：
Liu J
我们介绍pRate，一种新的信誉管理计划，具有强大的安全性和隐私保证的用户和他们的信誉分数。信誉分数是基于用户从他们的评级者接收的（聚合的）星的数量来计算的。pRate允许用户在搜索潜在的交易合作伙伴时发布有关其声誉的隐私友好声明。评级只能由最初获得受评人授权并颁发评级令牌的合作伙伴提交。该方案由一个可能不受信任的声誉管理器管理，该管理器可以注册用户并帮助被评级者更新他们的声誉分数，但无需学习这些分数。除了确保评级的保密性之外，pRate与以前的提案相比的一个显着特点是，它在交易和评级阶段隐藏了评级者和被评级者的身份。该计划是建立在一些有效的密码原语，其安全性正式建模，并证明了广泛使用的假设下，双线性群。
We introduce pRate, a novel reputation management scheme with strong security and privacy guarantees for the users and their reputation scores. The reputation scores are computed based on the (aggregated) number(s) of stars that users receive from their raters. pRate allows users to advertise privacy-friendly statements about their reputation when searching for potential transaction partners. Ratings can only be submitted by partners who have been initially authorised by the ratee and issued a rating token. The scheme is managed by a possibly untrusted reputation manager who can register users and assist ratees in updating their reputation scores, yet without learning these scores. In addition to ensuring the secrecy of the ratings, a distinctive feature of pRate over prior proposals, is that it hides the identities of raters and ratees from each other during the transaction and rating stages. The scheme is built from a number of efficient cryptographic primitives; its security is formally modeled and proven to hold under widely used assumptions on bilinear groups.