Abstract
A service may be implemented over several servers, and those servers may become compromised by an attacker, e.g. through software vulnerabilities. When this happens, the service manager will remove the vulnerabilities and re-instate the server. Typically, this will involve regenerating the public key by which clients authenticate the service, and revoking the old one. This paper presents a scheme which allows a storage service composed of several servers to create a group public key in a decentralised manner, and maintain its security even when such compromises take place. By maintaining keys for a long term,
we reduce the reliance on public-key certification. The storage servers periodically update the decryption secrets corresponding to a public key, in such a way that secrets gained by an attacker are rendered useless after an update takes place. An attacker would have to compromise all the servers within a short period lying between two updates in order to fully compromise the
system.
we reduce the reliance on public-key certification. The storage servers periodically update the decryption secrets corresponding to a public key, in such a way that secrets gained by an attacker are rendered useless after an update takes place. An attacker would have to compromise all the servers within a short period lying between two updates in order to fully compromise the
system.
Original language | English |
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Title of host publication | Proceedings of 16th IEEE International Conference on Trust, Security and Privacy in Computing and Communications (IEEE TrustCom-17) |
Publisher | IEEE Computer Society Press |
Number of pages | 8 |
ISBN (Electronic) | 978-1-5090-4906-6 |
ISBN (Print) | 978-1-5090-4907-3 |
DOIs | |
Publication status | Published - 11 Sept 2017 |
Event | 16th IEEE International Conference on Trust, Security and Privacy in Computing and Communications (IEEE TrustCom-17) - Sydney, Australia Duration: 1 Aug 2017 → 4 Aug 2017 |
Conference
Conference | 16th IEEE International Conference on Trust, Security and Privacy in Computing and Communications (IEEE TrustCom-17) |
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Country/Territory | Australia |
City | Sydney |
Period | 1/08/17 → 4/08/17 |