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In the classical kleptographic business models, the manufacturer of a device DD is paid either in advance or in installments by a malicious entity to backdoor DD. Unfortunately, these models have an i...
Hidden in Plain Sight: Storing and Managing Secrets on a Public Ledger
blockchain decentralisation access control
2018/3/5
Current blockchain systems are incapable of holding sensitive data securely on their public ledger while supporting accountability of data access requests and revocability of data access rights. Inste...
Managing Secrets with Consensus Networks: Fairness, Ransomware and Access Control
Ransomware Access Control
2017/3/6
In this work we investigate the problem of using public consensus networks -- exemplified by systems like Ethereum and Bitcoin -- to perform cryptographic functionalities that involve the manipulation...