| Presentation | 2022-03-07 An efficient scheme of homomorphic encryption for stochastic computing and its performance evaluation Ryusuke Koseki, Rei Ueno, Akira Ito, Naofumi Homma, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper describes how to improve the efficiency of Homomorphic Encryption for Stochastic Computing (HESC) and its performance evaluation. HESC is a cryptographic scheme that can compute stochastic operations called stochastic computing on encrypted data. This scheme can evaluate both stochastic addition and multiplication using a homomorphic encryption which can evaluate either addition or multiplication operation. On the other hand, the size of ciphertexts increases as a trade-off for the accuracy of the evaluation result, and therefore reducing the size of ciphertexts has been an issue for applications with high-order operations. In this paper, we propose a technique that can reduce the size of ciphertexts while keeping the accuracy of the scheme. Then, we show the applications of HESC to secure computation of polynomial functions and to secure inference with a neural network. Through the evaluation results, we demonstrate the effectiveness of the improved HESC in terms of accuracy and execution time. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Homomorphic Encryption / Stochastic Computing / Secure Computing / Deep-Learning |
| Paper # | VLD2021-82,HWS2021-59 |
| Date of Issue | 2022-02-28 (VLD, HWS) |
| Conference Information | |
| Committee | VLD / HWS |
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| Conference Date | 2022/3/7(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Design Technology for System-on-Silicon, Hardware Security, etc. |
| Chair | Kazutoshi Kobayashi(Kyoto Inst. of Tech.) / Yasuhisa Shimazaki(Renesas Electronics) |
| Vice Chair | Minako Ikeda(NTT) / Makoto Nagata(Kobe Univ.) / Daisuke Suzuki(Mitsubishi Electric) |
| Secretary | Minako Ikeda(Osaka Univ.) / Makoto Nagata(NEC) / Daisuke Suzuki(NTT) |
| Assistant | |
| Paper Information | |
| Registration To | Technical Committee on VLSI Design Technologies / Technical Committee on Hardware Security |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | An efficient scheme of homomorphic encryption for stochastic computing and its performance evaluation |
| Sub Title (in English) | |
| Keyword(1) | Homomorphic Encryption |
| Keyword(2) | Stochastic Computing |
| Keyword(3) | Secure Computing |
| Keyword(4) | Deep-Learning |
| 1st Author's Name | Ryusuke Koseki |
| 1st Author's Affiliation | Tohoku University(Tohoku Univ.) |
| 2nd Author's Name | Rei Ueno |
| 2nd Author's Affiliation | Tohoku University(Tohoku Univ.) |
| 3rd Author's Name | Akira Ito |
| 3rd Author's Affiliation | Tohoku University(Tohoku Univ.) |
| 4th Author's Name | Naofumi Homma |
| 4th Author's Affiliation | Tohoku University(Tohoku Univ.) |
| Date | 2022-03-07 |
| Paper # | VLD2021-82,HWS2021-59 |
| Volume (vol) | vol.121 |
| Number (no) | VLD-412,HWS-413 |
| Page | pp.pp.37-42(VLD), pp.37-42(HWS), |
| #Pages | 6 |
| Date of Issue | 2022-02-28 (VLD, HWS) |