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) |
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Topics (in Japanese) | (See Japanese page) |
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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 |