DES

E171105

DES (Data Encryption Standard) is a now-obsolete symmetric-key block cipher that was once a widely used U.S. government encryption standard but fell out of favor due to its relatively short key length and vulnerability to brute-force attacks.

All labels observed (1)

Label Occurrences
DES canonical 4

How this entity was disambiguated

Statements (47)

Predicate Object
instanceOf U.S. government encryption standard
encryption algorithm
symmetric-key block cipher
abbreviationOf Data Encryption Standard
basedOn Feistel network
surface form: Lucifer cipher
blockSize 64 bits
category block cipher
cipherStructure Feistel network
countryOfStandardization United States of America
surface form: United States
designedBy IBM
designersInclude Don Coppersmith
Horst Feistel
Walter Tuchman
effectiveKeySize 56 bits
encryptionModeSupport CBC
CFB
CTR
ECB
OFB
firstPublished 1975
fullName Data Encryption Standard
keyScheduleType bit-permutation and rotation
keySize 56 bits
keyType symmetric key
numberOfRounds 16
numberOfSBoxes 8
operatesOn 64-bit data blocks
parityBits 8 bits
primaryUseHistorical data confidentiality
replacedBy Advanced Encryption Standard
SBoxInputSize 6 bits
SBoxOutputSize 4 bits
standardizedBy National Institute of Standards and Technology
surface form: NIST

National Institute of Standards and Technology
surface form: National Bureau of Standards
standardName FIPS PUB 46
standardPublicationYear 1977
status considered insecure for most applications
successorStandard Advanced Encryption Standard
surface form: AES

3DES
surface form: Triple DES
totalKeyBits 64 bits
usesFinalPermutation true
usesInitialPermutation true
usesSBoxes true
vulnerability brute-force key search
differential cryptanalysis
linear cryptanalysis
withdrawnAsStandard 2005

How these facts were elicited

Referenced by (4)

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