| Presentation | 2018-08-02 Security Improvement of Common-Key Cryptographic Communication by Mixture of Fake Plain-Texts Masayoshi Hayashi, Hiroaki Higaki, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | One of the fundamental methods for eavesdroppers to achieve a plaintext from a cryptogram is the round-robin attack where available decryption keys are exhaustively applied to the decryption procedure. Here the reason why the eavesdroppers find the correct decryption key and the achieved decrypted text is the plaintext is that the decrypted text is readable and contextually valid. This paper proposes a novel cryptography method where "acceptable" pseudo plaintexts which are readable and contextually valid are mixed into a cryptogram with the plaintext. If an eavesdropper applies a pseudo decryption key to the decryption procedure, the pseudo plaintext is achieved that the eavesdropper cannot determine whether it is a plaintext or not. This method can be combined with any existing common-key cryptography and the probability for them to achieve the plaintext extremely decreases. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Cryptography / Common key Cryptosystem / Pseudo Plaintext |
| Paper # | MoNA2018-11 |
| Date of Issue | 2018-07-26 (MoNA) |
| Conference Information | |
| Committee | MoNA |
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| Conference Date | 2018/8/2(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Otaru Citizen Center |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Mobile Networks, Mobile Applications, etc. (tentative) |
| Chair | Ryoichi Shinkuma(Kyoto Univ.) |
| Vice Chair | Shigeaki Tagashira(Kansai Univ.) / Gen Kitagata(Tohoku Univ.) |
| Secretary | Shigeaki Tagashira(Kyushu Univ.) / Gen Kitagata(NEC) |
| Assistant | Ken Usui(KDDI Research) / Kenji Kanai(Waseda Univ.) |
| Paper Information | |
| Registration To | Technical Committee on Mobile Network and Applications |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Security Improvement of Common-Key Cryptographic Communication by Mixture of Fake Plain-Texts |
| Sub Title (in English) | |
| Keyword(1) | Cryptography |
| Keyword(2) | Common key Cryptosystem |
| Keyword(3) | Pseudo Plaintext |
| 1st Author's Name | Masayoshi Hayashi |
| 1st Author's Affiliation | Tokyo Denki University(Tokyo Denki Univ.) |
| 2nd Author's Name | Hiroaki Higaki |
| 2nd Author's Affiliation | Tokyo Denki University(Tokyo Denki Univ.) |
| Date | 2018-08-02 |
| Paper # | MoNA2018-11 |
| Volume (vol) | vol.118 |
| Number (no) | MoNA-170 |
| Page | pp.pp.31-36(MoNA), |
| #Pages | 6 |
| Date of Issue | 2018-07-26 (MoNA) |