On the Subject of Vigenère Cipher
Julius Caesar’s little brother...by about 1600 years...
- Take the first character of the serial and the first character of the code on the module, and translate them into numbers according to the Encryption Table below.
- Add the two numbers together, and turn them back into a character with the same table. If the numbers add up to something above 35, then subtract 36 until the output is in the table.
- Repeat for the second character of the code and the second character of the serial, etc.
Encryption Table
| A | 8 | S | 21 |
|---|---|---|---|
| B | 0 | T | 25 |
| C | 16 | U | 26 |
| D | 12 | V | 34 |
| E | 5 | W | 17 |
| F | 11 | X | 35 |
| G | 10 | Y | 20 |
| H | 13 | Z | 24 |
| I | 28 | 0 | 7 |
| J | 22 | 1 | 29 |
| K | 32 | 2 | 23 |
| L | 6 | 3 | 31 |
| M | 18 | 4 | 1 |
| N | 30 | 5 | 2 |
| O | 14 | 6 | 9 |
| P | 3 | 7 | 33 |
| Q | 19 | 8 | 15 |
| R | 4 | 9 | 27 |