Voorbeeld ROT13¶
Test het zelf eens uit via https://github.com/HoGentTIN/cybersec-otp .
Encryptie¶
plaintext | h | e | l | l | o |
plaintext | 7 | 4 | 11 | 11 | 14 |
key | 13 | 13 | 13 | 13 | 13 |
plaintext + key | 20 | 17 | 24 | 24 | 27 |
(plaintext + key) mod 26 | 20 | 17 | 24 | 24 | 1 |
ciphertext | u | r | y | y | b |
Decryptie¶
ciphertext | u | r | y | y | b |
ciphertext | 20 | 17 | 24 | 24 | 1 |
key | 13 | 13 | 13 | 13 | 13 |
ciphertext - key | 7 | 4 | 11 | 11 | -12 |
(ciphertext - key) mod 26 | 7 | 4 | 11 | 11 | 14 |
plaintext | h | e | l | l | o |