1. Keyed Caesar Cipher encoder
Text : ABCD efghi
Shift : 1
Alphabet : abcdefghijklmnopqrstuvwxyz
Key : keySolution:Alphabet = abcdefghijklmnopqrstuvwxyz
| Alphabet | a | b | c | d | e | f | g | h | i | j | k | l | m | n | o | p | q | r | s | t | u | v | w | x | y | z |
| x | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 |
| (x+1) mod 26 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 0 |
| KeyAlphabet | k | e | y | a | b | c | d | f | g | h | i | j | l | m | n | o | p | q | r | s | t | u | v | w | x | z |
| Ciphertext | e | y | a | b | c | d | f | g | h | i | j | l | m | n | o | p | q | r | s | t | u | v | w | x | z | k |
| Plaintext | : ABCD efghi |
| Shift | : 1 |
| Key | : key |
| Ciphertext | : EYAB cdfgh |
2. Keyed Caesar Cipher encoder
Text : hello world
Shift : 2
Alphabet : abcdefghijklmnopqrstuvwxyz
Key : bcdSolution:Alphabet = abcdefghijklmnopqrstuvwxyz
| Alphabet | a | b | c | d | e | f | g | h | i | j | k | l | m | n | o | p | q | r | s | t | u | v | w | x | y | z |
| x | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 |
| (x+2) mod 26 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 0 | 1 |
| KeyAlphabet | b | c | d | a | e | f | g | h | i | j | k | l | m | n | o | p | q | r | s | t | u | v | w | x | y | z |
| Ciphertext | d | a | e | f | g | h | i | j | k | l | m | n | o | p | q | r | s | t | u | v | w | x | y | z | b | c |
| Plaintext | : hello world |
| Shift | : 2 |
| Key | : bcd |
| Ciphertext | : jgnnq yqtnf |
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