Accountable Metadata-Hiding Escrow: A Group Signature Case Study
Accountable Metadata-Hiding Escrow: A Group Signature Case Study
复制标题
负责任的元数据隐藏托管:团体签名案例研究
DOI:
10.1515/popets-2015-0012
复制
发表时间:
2015
影响因子:
--
通讯作者:
Ian Miers
中科院分区:
文献类型:
--
作者:
Markulf Kohlweiss;Ian Miers
Abstract A common approach to demands for lawful access to encrypted data is to allow a trusted third party (TTP) to gain access to private data. However, there is no way to verify that this trust is well placed as the TTP may open all messages indiscriminately. Moreover, existing approaches do not scale well when, in addition to the content of the conversation, one wishes to hide one’s identity. Given the importance of metadata this is a major problem. We propose a new approach in which users can retroactively verify cryptographically whether they were wiretapped. As a case study, we propose a new signature scheme that can act as an accountable replacement for group signatures, accountable forward and backward tracing signatures.
影响因子:
1.6
作者:
Hofheinz, Dennis;Jager, Tibor
通讯作者:
Jager, Tibor