CCA-1 Secure Updatable Encryption with Adaptive Security
CCA-1 Secure Updatable Encryption with Adaptive Security
Regularly changing encryption keys is widely recognized as an effective approach to mitigate the risk of key compromise, especially when outsourcing encrypted data to a semi-honest cloud server. Updatable encryption (UE), introduced by Boneh et al., offers a practical solution to this challenge. UE allows the cloud server to update ciphertexts by itself, with the help of the token received from the user. In this presentation, the speaker will discuss recent developments in this field and present a UE scheme based on lattice trapdoor techniques, which achieves both CCA-1 security and adaptive security.
Based on the following work: Huanhuan Chen, Yao Jiang Galteland & Kaitai Liang. CCA-1 Secure Updatable Encryption with Adaptive Security. ASIACRYPT 2023.
Click the link below to join the seminar at the following time
Melbourne (AEDT) : 16 Apr 2024 11:00 AM
Japan (JST) : 16 Apr 2024 9:00 AM
China (CST) : 16 Apr 2024 8:00 AM
India (IST) : 16 Apr 2024 5:30 AM
Central Europe (CEST) : 16 Apr 2024 2:00 AM
New York (EDT) : 15 Apr 2024 8:00 PM
Los Angeles (PDT) : 15 Apr 2024 5:00 PM
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Webinar passcode: 176053 (if asked when joining the seminar)
About the speaker
PhD Candidate, Delft University of Technology
Huanhuan Chen is a third-year Ph.D. candidate at Delft University of Technology. His research focuses on applied cryptography, including Updatable Encryption, Fully Homomorphic Encryption, Searchable Encryption, and Privacy-Preserving Machine Learning. His work has appeared in security conferences such as ESORICS, Asiacrypt, and CSF. Additionally, he has established collaborations from NTNU, the University of Padua, and IMDEA.
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