Managing Your Kleptographic Subscription Plan

In the classical kleptographic business models, the manufacturer of a device $D$ is paid either in advance or in installments by a malicious entity to backdoor $D$. Unfortunately, these models have an inherent high risk for the manufacturer. This translates in high costs for clients. To address this issue, we introduce a subscription based business model and tackle some of the technical difficulties that arise

Subliminal Hash Channels

Due to their nature, subliminal channels are mostly regarded as being malicious, but due to recent legislation efforts users\u27 perception might change. Such channels can be used to subvert digital signature protocols without degrading the security of the underlying primitive. Thus, it is natural to find countermeasures and devise subliminal-free signatures. In this paper we discuss state-of-the-art countermeasures and introduce a generic method to bypass them