I. Relate that this is one of the oldest modern encryption methods still used to this day, having been a key factor in cryptography for well over 100 years (1917).
II. Assemble and list the process of a Vernam cipher encryption operation:
• The pad values are added to numeric values that represent the plaintext that needs to be encrypted.
• Each character of the plaintext is turned into a number, and a pad value for that position is added to it.
• The resulting sum for that character is then converted back to a ciphertext letter for transmission.
• When the two are added, if the values exceed 26, then 26 is subtracted from the total. (This is referred to as Modulo 26.)
• The corresponding results are then converted back to text.