Efficient dispersal of information for security, load balancing, and fault tolerance
Journal of the ACM (JACM)
Practical Techniques for Searches on Encrypted Data
SP '00 Proceedings of the 2000 IEEE Symposium on Security and Privacy
Publius: a robust, tamper-evident, censorship-resistant web publishing system
SSYM'00 Proceedings of the 9th conference on USENIX Security Symposium - Volume 9
Authentication and secret search mechanisms for RFID-aware wireless sensor networks
International Journal of Security and Networks
Fast and secure laptop backups with encrypted de-duplication
LISA'10 Proceedings of the 24th international conference on Large installation system administration
The multiple sequence sets: problem and heuristic algorithms
Journal of Combinatorial Optimization
Privacy preserving keyword searches on remote encrypted data
ACNS'05 Proceedings of the Third international conference on Applied Cryptography and Network Security
Improving sender anonymity in a structured overlay with imprecise routing
PET'06 Proceedings of the 6th international conference on Privacy Enhancing Technologies
Security rationale for a cooperative backup service for mobile devices
LADC'07 Proceedings of the Third Latin-American conference on Dependable Computing
Time-based proxy re-encryption scheme for secure data sharing in a cloud environment
Information Sciences: an International Journal
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This paper describes the design of a censorship-resistant distributed file sharing protocol which has been implemented on top of gnunet, an anonymous, reputation-based network. We focus on the encoding layer of the gnunet file-sharing protocol which supports efficient dissemination of encrypted data as well as queries over encrypted data. The main idea advocated in this paper is that simple cryptographic techniques are sufficient to engineer an efficient data encoding that can make it significantly harder to selectively censor information. Our encoding allows users to share files encrypted under descriptive keys which are the basis for querying the network for content. A key property of our encoding is that intermediaries can filter invalid encrypted replies without being able to decrypt the query or the reply. Files are stored in small chunks which are distributed and replicated automatically by the GNUnet infrastructure. Additionally, data files may be stored in plaintext or encrypted form or as a combination of both and encrypted on demand.