Statements (18)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
crypt
polyalphabetic cipher |
| gptkbp:category |
crypt
|
| gptkbp:decryptionMethod |
reverse encryption process
|
| gptkbp:encryption |
digraphs
|
| gptkbp:features |
stronger than Playfair cipher
|
| https://www.w3.org/2000/01/rdf-schema#label |
Four-square cipher
|
| gptkbp:introducedIn |
1902
|
| gptkbp:inventedBy |
gptkb:Félix_Delastelle
|
| gptkbp:notableFeature |
uses four squares for encryption
|
| gptkbp:plaintext_alphabet |
25 letters (I/J combined)
|
| gptkbp:relatedTo |
gptkb:Playfair_cipher
|
| gptkbp:requires |
two keys
|
| gptkbp:usedIn |
manual cryptography
|
| gptkbp:uses |
four 5x5 matrices
keyed alphabets |
| gptkbp:bfsParent |
gptkb:Playfair_cipher
|
| gptkbp:bfsLayer |
6
|