Salsa20

E42566
cryptographic primitive stream cipher symmetric-key algorithm

Salsa20 is a high-speed stream cipher designed by Daniel J. Bernstein, widely used in modern cryptography for its strong security and efficient software performance.

Jump to: Surface forms Statements Referenced by

Observed surface forms (3)

Surface form Occurrences
Salsa20/8 2
Salsa20/12 1
Salsa20/20 2

Statements (48)

Predicate Object
instanceOf cryptographic primitive ⓘ
stream cipher ⓘ
symmetric-key algorithm ⓘ
application disk encryption ⓘ
file encryption ⓘ
network protocols ⓘ
blockSize 512 bits ⓘ
category modern cryptography ⓘ
coreFunctionName Salsa20 hash core ⓘ
designedFor software implementation ⓘ
designer Daniel J. Bernstein ⓘ
designGoal high software performance ⓘ
strong security ⓘ
designType add-rotate-xor cipher ⓘ
encryptionMethod XOR keystream with plaintext ⓘ
familyMember Salsa20 self-linksurface differs ⓘ
surface form: Salsa20/12

Salsa20 self-linksurface differs ⓘ
surface form: Salsa20/20

Salsa20 self-linksurface differs ⓘ
surface form: Salsa20/8
influenced ChaCha ⓘ
introducedIn 2005 ⓘ
keySize 128 bits ⓘ
256 bits ⓘ
license public domain ⓘ
nonceSize 64 bits ⓘ
operatingMode synchronous stream cipher ⓘ
outputType keystream ⓘ
relatedTo ChaCha20 ⓘ
rounds 12 ⓘ
20 ⓘ
8 ⓘ
securityClaim 256-bit security for 256-bit keys ⓘ
specifiedIn eSTREAM portfolio documentation ⓘ
standardVariant Salsa20 self-linksurface differs ⓘ
surface form: Salsa20/20
stateSize 512 bits ⓘ
status no practical attacks on full-round Salsa20/20 known as of 2024 ⓘ
widely analyzed ⓘ
submissionCategory software ⓘ
submittedTo eSTREAM ⓘ
updateFunction quarter-round function ⓘ
usesConstant sigma constant ⓘ
usesOperation bit rotation ⓘ
bitwise XOR ⓘ
modular addition ⓘ
usesPrimitive ARX operations ⓘ
usesStructure 4x4 matrix of 32-bit words ⓘ
hash-function-like core ⓘ
variantNonceSize 96 bits ⓘ
wordSize 32 bits ⓘ

Referenced by (9)

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

ChaCha20 → basedOn → Salsa20 ⓘ
ChaCha20 → comparedWith → Salsa20 ⓘ
Salsa20 → familyMember → Salsa20 self-linksurface differs ⓘ
this entity surface form: Salsa20/8
Salsa20 → familyMember → Salsa20 self-linksurface differs ⓘ
this entity surface form: Salsa20/12
Salsa20 → familyMember → Salsa20 self-linksurface differs ⓘ
this entity surface form: Salsa20/20
this entity surface form: Salsa20/8
Poly1305 → oftenUsedWith → Salsa20 ⓘ
Salsa20 → standardVariant → Salsa20 self-linksurface differs ⓘ
this entity surface form: Salsa20/20