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Sponsored Group Signature and its Application to Privacy-preserving Guest Access in Smart Environments
Sepideh Avizheh, Reihaneh Safavi-Naini, Shiwei Sun
Group signatures are privacy preserving signature schemes in which a group member can anonymously sign messages on behalf of the group, while providing accountability, by allowing…
Hybrid Encryption with Certified Deletion in Preprocessing Model
Kunal Dey, Reihaneh Safavi-Naini
Certified deletion allows Alice to outsource data to Bob and, at a later time, obtain a verifiable guarantee that the file has been irreversibly deleted at her request. This functi…
Robust and Reusable Fuzzy Extractors for Low-entropy Rate Randomness Sources
Somnath Panja, Shaoquan Jiang, Reihaneh Safavi-Naini
Fuzzy extractors (FE) are cryptographic primitives that extract reliable cryptographic key from noisy real world random sources such as biometric sources. The FE generation algorit…