1. Polybius Square Cipher encoder
Text : ABCD efghi
Alphabet25 : abcdefghiklmnopqrstuvwxyz
Separator :
Row Heading : 12345
Column Heading : 12345
Coordinates Read Order : Row then ColumnSolution:The Polybius square cipher is a 5x5 grid-based substitution cipher, that converts each letter into pair of coordinates (row, column)
Alphabet = abcdefghiklmnopqrstuvwxyz
| 1 | 2 | 3 | 4 | 5 |
| 1 | a | b | c | d | e |
| 2 | f | g | h | i | k |
| 3 | l | m | n | o | p |
| 4 | q | r | s | t | u |
| 5 | v | w | x | y | z |
| Plaintext | a | b | c | d | e | f | g | h | i |
Text Position
(Cipher) | 11 | 12 | 13 | 14 | 15 | 21 | 22 | 23 | 24 |
| Plaintext | : abcdefghi |
| Ciphertext | : 11 12 13 14 15 21 22 23 24 |
2. Polybius Square Cipher encoder
Text : hello world
Alphabet25 : abcdefghiklmnopqrstuvwxyz
Separator :
Row Heading : 12345
Column Heading : 12345
Coordinates Read Order : Row then ColumnSolution:The Polybius square cipher is a 5x5 grid-based substitution cipher, that converts each letter into pair of coordinates (row, column)
Alphabet = abcdefghiklmnopqrstuvwxyz
| 1 | 2 | 3 | 4 | 5 |
| 1 | a | b | c | d | e |
| 2 | f | g | h | i | k |
| 3 | l | m | n | o | p |
| 4 | q | r | s | t | u |
| 5 | v | w | x | y | z |
| Plaintext | h | e | l | l | o | w | o | r | l | d |
Text Position
(Cipher) | 23 | 15 | 31 | 31 | 34 | 52 | 34 | 42 | 31 | 14 |
| Plaintext | : helloworld |
| Ciphertext | : 23 15 31 31 34 52 34 42 31 14 |
This material is intended as a summary. Use your textbook for detail explanation.
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