| Presentation | 2002/5/15 S-Box-and-Bit-Sliced Analysis of DES (IV) : Trellis-based Cipher-only Attack Tohru KOHDA, Atsushi SHIMONOSONO, Takanobu TERAZONO, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We first introduce a set of the inverse 2-round DES for every S-box to perform a last-round cipher-only attack. Secondly we introduce key-trellis module, a graphical representation of Kullback-Leibler distances between keys. Thirdly, we define a tessellated trellis diagram to reap all observed KL distances in the key-trellis modules and to rank all possible guessed key vectors in order of certainty based on ciphertexts only. Such a tessellated trellis diagram is shown to be a round-number-free ciphertext-only attack and a cost-effective way to enhance its certainty of guessed key within restricted observed ciphertexts too. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | partitioning cryptanalysis / ciphertext-only analysis / S-box-and-bit-slicing / DES / inverse DES / Kullback-Leibler distance / key-trellis module / tessellated trellis diagram |
| Paper # | ISEC2002-4 |
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| Conference Information | |
| Committee | ISEC |
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| Conference Date | 2002/5/15(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) | S-Box-and-Bit-Sliced Analysis of DES (IV) : Trellis-based Cipher-only Attack |
| Sub Title (in English) | |
| Keyword(1) | partitioning cryptanalysis |
| Keyword(2) | ciphertext-only analysis |
| Keyword(3) | S-box-and-bit-slicing |
| Keyword(4) | DES |
| Keyword(5) | inverse DES |
| Keyword(6) | Kullback-Leibler distance |
| Keyword(7) | key-trellis module |
| Keyword(8) | tessellated trellis diagram |
| 1st Author's Name | Tohru KOHDA |
| 1st Author's Affiliation | Department of Computer Science and Communication Engineering,Kyushu University() |
| 2nd Author's Name | Atsushi SHIMONOSONO |
| 2nd Author's Affiliation | Department of Computer Science and Communication Engineering,Kyushu University |
| 3rd Author's Name | Takanobu TERAZONO |
| 3rd Author's Affiliation | Department of Computer Science and Communication Engineering,Kyushu University |
| Date | 2002/5/15 |
| Paper # | ISEC2002-4 |
| Volume (vol) | vol.102 |
| Number (no) | 71 |
| Page | pp.pp.- |
| #Pages | 8 |
| Date of Issue | |