| Presentation | 2000/5/18 A Robust Length-invariant Hybrid Mix Miyako Ohkubo, Masayuki ABE, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper presents the first secure Mix-net that can efficiently handle long messages. All existing schemes limit the length of messages to no more than a single block of the underlying public key encryption scheme, or handle long messages in a heuristic way. Our scheme also enjoys length-invariance, i. e. the length of the input ciphertext does not depend not depend on the number of mix-servers. We adopt hybrid encryption that combines a Diffie-Hellman public key exchange with a common key encryption. The security is proved in the random oracle model by showing a reduction from breaking the anonymity of our scheme to breaking the underlying symmetric encryption scheme or solving the decisional Diffe-Hellman problem. We also show an approach for the robust scheme that outputs correct results in the presence of corrupt servers. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Hybrid Mix / Anonymous Channel / Hybrid encryption |
| Paper # | ISEC2000-1 |
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| Conference Information | |
| Committee | ISEC |
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| Conference Date | 2000/5/18(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | |
| Vice Chair | |
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| Paper Information | |
| Registration To | Information Security (ISEC) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Robust Length-invariant Hybrid Mix |
| Sub Title (in English) | |
| Keyword(1) | Hybrid Mix |
| Keyword(2) | Anonymous Channel |
| Keyword(3) | Hybrid encryption |
| 1st Author's Name | Miyako Ohkubo |
| 1st Author's Affiliation | NTT Laboratories() |
| 2nd Author's Name | Masayuki ABE |
| 2nd Author's Affiliation | NTT Laboratories |
| Date | 2000/5/18 |
| Paper # | ISEC2000-1 |
| Volume (vol) | vol.100 |
| Number (no) | 76 |
| Page | pp.pp.- |
| #Pages | 8 |
| Date of Issue | |