Alberti cipher disk

E202912

The Alberti cipher disk is a 15th-century polyalphabetic substitution device, considered one of the earliest mechanical tools for encrypting messages and a foundational innovation in modern cryptography.

All labels observed (1)

Label Occurrences
Alberti cipher disk canonical 1

How this entity was disambiguated

Statements (45)

Predicate Object
instanceOf cipher device
mechanical encryption device
polyalphabetic substitution cipher
appliesConcept cipher alphabet rotation
polyalphabetism
substitution cipher
category Renaissance technology
historical cipher device
countryOfOrigin Italy
describedInWork De Cifris
encodingSystem Latin alphabet
era 15th century
fieldOfUse cryptography
diplomatic communications
military communications
hasAdvantageOver monoalphabetic substitution ciphers
hasDesignFeature alignment of plaintext and ciphertext letters
concentric alphabet rings
relative rotation between alphabets
hasPart fixed outer disk
movable inner disk
hasQuality manually operated
portable
reconfigurable
inception circa 1467
influenced Vigenère table
surface form: Vigenère cipher

later cipher disks
mechanical cryptographic devices
inventor Leon Battista Alberti
material metal
wood
namedAfter Leon Battista Alberti
notableFor being one of the earliest polyalphabetic ciphers
being one of the first mechanical encryption devices
introducing systematic polyalphabetic substitution
partOf history of cryptography
provides increased resistance to frequency analysis
publicationYearOfDescription 1467
usedFor decrypting messages
encrypting messages
uses cipher alphabets
cipher keys
index letters
polyalphabetic substitution
rotating disks

How these facts were elicited

Referenced by (1)

Full triples — surface form annotated when it differs from this entity's canonical label.

Leon Battista Alberti knownFor Alberti cipher disk