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.
Rearranged:

Encryption Table

A8S21
B0T25
C16U26
D12V34
E5W17
F11X35
G10Y20
H13Z24
I2807
J22129
K32223
L6331
M1841
N3052
O1469
P3733
Q19815
R4927
B0M18
41Q19
52Y20
P3S21
R4J22
E5223
L6Z24
07T25
A8U26
69927
G10I28
F11129
D12N30
H13331
O14K32
815733
C16V34
W17X35