Abstract
Public data can be authenticated by obtaining from a trustworthy website with TLS. Private data, such as user profile, are usually restricted from public access. If a user wants to authenticate his private data (e.g., address) provided by a restricted website (e.g., user profile page of a utility company website) to a verifier, he cannot simply give his username and password to the verifier. DECO (CCS 2020) provides a solution for liberating these data without introducing undesirable trust assumption, nor requiring server-side modification for TLS 1.2.
In this paper, we propose an optimized solution for TLS 1.3 websites. We tackle a number of open problems, including the support of X25519 key exchange in TLS 1.3, the design of round-optimal three-party key exchange, the architecture of two-party computation of TLS 1.3 key scheduling, and circuit design optimized for two-party computation. We test our implementation with real world website and show that our optimization is necessary to avoid timeout in TLS handshake.
In this paper, we propose an optimized solution for TLS 1.3 websites. We tackle a number of open problems, including the support of X25519 key exchange in TLS 1.3, the design of round-optimal three-party key exchange, the architecture of two-party computation of TLS 1.3 key scheduling, and circuit design optimized for two-party computation. We test our implementation with real world website and show that our optimization is necessary to avoid timeout in TLS handshake.
| Original language | English |
|---|---|
| Title of host publication | Information Security Practice and Experience - 18th International Conference, ISPEC 2023 Copenhagen, Denmark, August 24–25, 2023 Proceedings |
| Editors | Weizhi Meng, Zheng Yan, Vincenzo Piuri |
| Place of Publication | Singapore Singapore |
| Publisher | Springer |
| Pages | 154-169 |
| Number of pages | 16 |
| ISBN (Electronic) | 9789819970322 |
| ISBN (Print) | 9789819970315 |
| DOIs | |
| Publication status | Published - 2023 |
| Externally published | Yes |
| Event | Information Security Practice and Experience Conference 2023 - Copenhagen, Denmark Duration: 24 Aug 2023 → 25 Aug 2024 Conference number: 18th https://link.springer.com/book/10.1007/978-981-99-7032-2 (Proceedings) https://ispec2023.compute.dtu.dk/ (Website) |
Publication series
| Name | Lecture Notes in Computer Science |
|---|---|
| Publisher | Springer |
| Volume | 14341 |
Conference
| Conference | Information Security Practice and Experience Conference 2023 |
|---|---|
| Abbreviated title | ISPEC 2023 |
| Country/Territory | Denmark |
| City | Copenhagen |
| Period | 24/08/23 → 25/08/24 |
| Internet address |
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