| Presentation | 2000/5/18 Specification and Assessment of the block cipher Hierocrypt kenji ohkuma, hirofumi muratani, fumihiko sano, shinichi kawamura, |
|---|---|
| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper proposes a new symmetric block cryptosystem "Hierocrypt" which has a two-level nested (recursive) SPN structure, where lower-level SPN structures are recursively embedded into S-box positions in SPN of the higher level. This Structure recuesively assures the minimum number of active S-boxes, and high security level is efficiently realized. The 8-round Hierocrypt is implemented in C language on Pentium III (550 Mhz), and shows the middle-class performance of AES candidates. As the security margin is very high and there seems to be the room for improvement, we conclude that Hierocrypt is an efficient algorithm. Hierocrypt was proposed to the Japanese national body of ISO / IEC / JTC1, as a candidate for stan-dard encryption algorithms. The document for proposition is appended as an appendix of this paper. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | symmetric block cipher / nested SPN structure / recursive / branch number / active S-box |
| Paper # | ISEC2000-7 |
| Date of Issue |
| Conference Information | |
| Committee | ISEC |
|---|---|
| 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 | |
| Secretary | |
| Assistant | |
| Paper Information | |
| Registration To | Information Security (ISEC) |
|---|---|
| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Specification and Assessment of the block cipher Hierocrypt |
| Sub Title (in English) | |
| Keyword(1) | symmetric block cipher |
| Keyword(2) | nested SPN structure |
| Keyword(3) | recursive |
| Keyword(4) | branch number |
| Keyword(5) | active S-box |
| 1st Author's Name | kenji ohkuma |
| 1st Author's Affiliation | Corporate Research & Development Center, Toshiba Corporation() |
| 2nd Author's Name | hirofumi muratani |
| 2nd Author's Affiliation | Corporate Research & Development Center, Toshiba Corporation |
| 3rd Author's Name | fumihiko sano |
| 3rd Author's Affiliation | SI Technology Center, Toshiba Corporation |
| 4th Author's Name | shinichi kawamura |
| 4th Author's Affiliation | Corporate Research & Development Center, Toshiba Corporation |
| Date | 2000/5/18 |
| Paper # | ISEC2000-7 |
| Volume (vol) | vol.100 |
| Number (no) | 76 |
| Page | pp.pp.- |
| #Pages | 28 |
| Date of Issue | |