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|  |  | To access the contents, click the chapter and section titles. Applied Cryptography, Second Edition: Protocols, Algorthms, and Source Code in C (cloth) (Publisher: John Wiley & Sons, Inc.) Author(s): Bruce Schneier ISBN: 0471128457 Publication Date: 01/01/96 Search this book:
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Cryptanalysis of GOST These are the major differences between DES and GOST. — DES has a complicated procedure for generating the subkeys from the keys. GOST has a very simple procedure. — DES has a 56-bit key; GOST has a 256-bit key. If you add in the secret S-box permutations, GOST has a total of about 610 bits of secret information. Table 14.2 GOST S-Boxes
| S-box 1: |  |  |  |  |  |  |  |  |  |  |  |  |
4 | 10 | 9 | 2 | 13 | 8 | 0 | 14 | 6 | 11 | 1 | 12 | 7 | 15 | 5 | 3
| S-box 2: |  |  |  |  |  |  |  |  |  |  |  |  |
14 | 11 | 4 | 12 | 6 | 13 | 15 | 10 | 2 | 3 | 8 | 1 | 0 | 7 | 5 | 9
| S-box 3: |  |  |  |  |  |  |  |  |  |  |  |  |
5 | 8 | 1 | 13 | 10 | 3 | 4 | 2 | 14 | 15 | 12 | 7 | 6 | 0 | 9 | 11
| S-box 4: |  |  |  |  |  |  |  |  |  |  |  |  |
7 | 13 | 10 | 1 | 0 | 8 | 9 | 15 | 14 | 4 | 6 | 12 | 11 | 2 | 5 | 3
| S-box 5: |  |  |  |  |  |  |  |  |  |  |  |  |
6 | 12 | 7 | 1 | 5 | 15 | 13 | 8 | 4 | 10 | 9 | 14 | 0 | 3 | 11 | 2
| S-box 6: |  |  |  |  |  |  |  |  |  |  |  |  |
4 | 11 | 10 | 0 | 7 | 2 | 1 | 13 | 3 | 6 | 8 | 5 | 9 | 12 | 15 | 14
| S-box 7: |  |  |  |  |  |  |  |  |  |  |  |  |
13 | 11 | 4 | 1 | 3 | 15 | 5 | 9 | 0 | 10 | 14 | 7 | 6 | 8 | 2 | 12
| S-box 8: |  |  |  |  |  |  |  |  |  |  |  |  |
1 | 15 | 13 | 0 | 5 | 7 | 10 | 4 | 9 | 2 | 3 | 14 | 6 | 11 | 8 | 12
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