Securing the Internet of Things - Security and Privacy in a Hyperconnected World
Book Title Building the Hyperconnected Society IoT Research and Innovation Value Chains, Ecosystems and Markets Chapter Title Securing the Internet of Things - Security and Privacy in a Hyperconnected World Authors Elias Z. Tragos (FORTH, Greece), Henrich C. Pöhls...
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Homomorphic Signature Schemes - A Survey
In the last years, there has been an increasing interest in homomorphic signature schemes. Thus, many schemes have been proposed that are suitable for a lot of different applications. In this work, we overcome the extensive state of the...
Details Efficient Proactive Secret Sharing
Distributed storage allows to outsource a document to the cloud such that multiple users can easily access the file. The protection of the document stored relies on secret sharing, which generates and distributes shares of the document to the...
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SECPID 2017 at ARES Conference 2017
PRISMACLOUD and its partner project CREDENTIAL are organizing a Workshop on Security, Privacy, and Identity Management in the Cloud at this year's ARES conference, the 12th International Conference on Availability, Reliability and Security on August 29 - September 2, 2017 in...
Details Homomorphic Proxy Re-Authenticators and Applications to Verifiable Multi-User Data Aggregation
We introduce the notion of homomorphic proxy re-authenticators, a tool that adds security and verifiability guarantees to multi-user data aggregation scenarios. It allows distinct sources to authenticate their data under their own keys, and a proxy can transform these...
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ISO/IEC JTC1 SC27 WG4 Liaison
PRISMACLOUD has a liaison with ISO/IEC JTC1/SC27 WG4 (“Liaison Category C”), which enables us to make effective technical contribution and participate actively at the working group or project level. We want to participate in the development of ISO/IEC 19086-4,...
Details Linking-Based Revocation for Group Signatures : A Pragmatic Approach for Efficient Revocation Checks
Group signatures represent an important mechanism for privacy-preserving applications. However, their practical applicability is restricted due to inefficiencies of existing membership revocation mechanisms that place a computational burden and communication overhead on signers and verifiers. In particular, it seems...
Details An Unconditionally Hiding Auditing Procedure for Multi-Party Computations
In this work an unconditionally hiding auditing procedure for computations on documents stored in distributed fashion is introduced. There is only one multi-party computation (MPC) scheme providing auditability which computationally protects the inputs of the computations. Building on this,...
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Malicious Clients in Distributed Secret Sharing Based Storage Networks
Recent publications combine secret-sharing with byzantine fault-tolerant distribution schemes into safe and secure storage systems. To our knowledge current publications describe chosen algorithms and implementations but do not highlight areas of conflict between secret-sharing and BFT algorithms in a...
Details MiMC: Efficient Encryption and Cryptographic Hashing with Minimal Multiplicative Complexity
Martin R. Albrecht, Lorenzo Grassi, Christian Rechberger, Arnab Roy, Tyge Tiessen. MiMC: Efficient Encryption and Cryptographic Hashing with Minimal Multiplicative Complexity. 22nd International Conference on the Theory and Application of Cryptology and Information Security (ASIACRYPT 2016). Hanoi, Vietnam, December...
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