| Presentation | 2007-09-07 An Extension of Fast Threshold Schemes Using XOR Operations (2) Jun KURIHARA, Shinsaku KIYOMOTO, Kazuhide FUKUSHIMA, Toshiaki TANAKA, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper proposes several extensions of fast (k,n)-threshold schemes which use EXCLUSIVE-OR(XOR) operations. We introduced the new concept of singular point of divided pieces of shares in part one. Several methods using singular point based on fast (k,n)-threshold schemes are proposed in this paper. These comprise a fast threshold ramp scheme and a method to embed additional information into shares. Similar to a ramp scheme based on Shamir's threshold scheme, our fast ramp scheme realizes to reduce each bit-size of shares instead of degradation of security. On the other hand, a method to embed additional information allows only participants who pre-shared the authorities with the dealer to recover not only the secret but also the additional information corresponding to the authority from k shares. Thus, this embedding method can realize a distributed subliminal channel (storage) between the dealer and the trusted participant, simple access control method and so on, which use the property of secret sharing schemes. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | secret sharing scheme / threshold scheme / ramp secret sharing scheme / exclusive-or / random number |
| Paper # | ISEC2007-75 |
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| Conference Information | |
| Committee | ISEC |
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| Conference Date | 2007/8/31(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Information Security (ISEC) |
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| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | An Extension of Fast Threshold Schemes Using XOR Operations (2) |
| Sub Title (in English) | |
| Keyword(1) | secret sharing scheme |
| Keyword(2) | threshold scheme |
| Keyword(3) | ramp secret sharing scheme |
| Keyword(4) | exclusive-or |
| Keyword(5) | random number |
| 1st Author's Name | Jun KURIHARA |
| 1st Author's Affiliation | KDDI R&D Laboratories, Inc.() |
| 2nd Author's Name | Shinsaku KIYOMOTO |
| 2nd Author's Affiliation | KDDI R&D Laboratories, Inc. |
| 3rd Author's Name | Kazuhide FUKUSHIMA |
| 3rd Author's Affiliation | KDDI R&D Laboratories, Inc. |
| 4th Author's Name | Toshiaki TANAKA |
| 4th Author's Affiliation | KDDI R&D Laboratories, Inc. |
| Date | 2007-09-07 |
| Paper # | ISEC2007-75 |
| Volume (vol) | vol.107 |
| Number (no) | 209 |
| Page | pp.pp.- |
| #Pages | 7 |
| Date of Issue | |