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Combined Techniques of Hill Cipher and Transposition Cipher
Journal of Mathematics Letters
| Vol 1, Issue 1
Table 2. Modulo Inverse of Mod 26
| A | 1 | 3 | 5 | 7 | 9 | 11 | 15 | 17 | 19 | 21 | 23 | 25 |
| a-1 | 1 | 9 | 21 | 15 | 3 | 19 | 7 | 23 | 11 | 5 | 17 | 25 |