Diffie–Hellman key exchange

E5655

cryptographic protocol key exchange protocol public-key cryptography scheme

Diffie–Hellman key exchange is a foundational cryptographic protocol that enables two parties to securely establish a shared secret over an insecure communication channel.

Observed surface forms (7)

Surface form	Occurrences
Elliptic Curve Diffie–Hellman	2
Diffie-Hellman key exchange	1
Diffie–Hellman	1
Key Exchange Algorithm for the Secure Shell (SSH) Transport Layer Protocol	1
ephemeral Diffie-Hellman	1
finite-field Diffie-Hellman	1
finite-field Diffie–Hellman	1

Statements (49)

Predicate	Object
instanceOf	cryptographic protocol ⓘ key exchange protocol ⓘ public-key cryptography scheme ⓘ
basedOn	discrete logarithm problem ⓘ
canBeCombinedWith	digital signatures ⓘ pre-shared public keys ⓘ public key certificates ⓘ
canProvide	perfect forward secrecy when used with ephemeral keys ⓘ
enables	agreement on a shared secret between two parties ⓘ secure key establishment over an insecure channel ⓘ
field	cryptography ⓘ information security ⓘ
hasStep	computation of a shared secret by each party ⓘ computation of public values by exponentiation ⓘ exchange of public values ⓘ generation of private keys by each party ⓘ selection of a generator of a multiplicative group ⓘ selection of a large prime modulus ⓘ
hasVariant	Elliptic-curve Diffie–Hellman ⓘ ephemeral Diffie–Hellman ⓘ Diffie–Hellman key exchange self-linksurface differs ⓘ surface form: finite-field Diffie–Hellman static Diffie–Hellman ⓘ
influenced	design of key agreement protocols ⓘ modern public-key cryptography ⓘ
introducedBy	Martin Hellman ⓘ Whitfield Diffie ⓘ
mathematicalStructure	elliptic curve group ⓘ multiplicative group modulo a prime ⓘ
notSecureAgainst	active man-in-the-middle without authentication ⓘ
property	security relies on hardness of computing discrete logarithms ⓘ symmetric shared secret is never transmitted directly ⓘ vulnerable to man-in-the-middle attacks without authentication ⓘ
publicationYear	1976 ⓘ
publishedIn	New Directions in Cryptography ⓘ
requires	authentication mechanism for protection against active attackers ⓘ
standardizedIn	NIST SP 800-56A ⓘ RFC 3526 ⓘ RFC 7919 ⓘ
threatModel	passive eavesdroppers ⓘ
usedFor	establishing symmetric encryption keys ⓘ forward secrecy in secure communication protocols ⓘ
usedIn	IPsec ⓘ PGP ⓘ SSH ⓘ surface form: Secure Shell TLS ⓘ surface form: Transport Layer Security
uses	cyclic group arithmetic ⓘ modular exponentiation ⓘ private exponents ⓘ public parameters ⓘ

Referenced by (22)

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

Bailey → coInvented → Diffie–Hellman key exchange ⓘ

subject surface form: Bailey Whitfield Diffie

Martin Hellman → coInvented → Diffie–Hellman key exchange ⓘ

Hellman → coInvented → Diffie–Hellman key exchange ⓘ

subject surface form: Martin Hellman

Whitfield Diffie → coInvented → Diffie–Hellman key exchange ⓘ

Diffie–Hellman key exchange → hasVariant → Diffie–Hellman key exchange self-linksurface differs ⓘ

this entity surface form: finite-field Diffie–Hellman

Elliptic Curve Cryptography → includesScheme → Diffie–Hellman key exchange ⓘ

this entity surface form: Elliptic Curve Diffie–Hellman

New Directions in Cryptography → influenced → Diffie–Hellman key exchange ⓘ

Martin Hellman → knownFor → Diffie–Hellman key exchange ⓘ

Hellman → knownFor → Diffie–Hellman key exchange ⓘ

subject surface form: Martin Hellman

Whitfield Diffie → notableWork → Diffie–Hellman key exchange ⓘ

New Directions in Cryptography → relatedTo → Diffie–Hellman key exchange ⓘ

RFC 7919 → relatedTo → Diffie–Hellman key exchange ⓘ

RFC 3526 → relatesToConcept → Diffie–Hellman key exchange ⓘ

this entity surface form: Diffie-Hellman key exchange

SSL 3.0 → supports → Diffie–Hellman key exchange ⓘ

TLS 1.1 → supports → Diffie–Hellman key exchange ⓘ

TLS → supportsAlgorithmFamily → Diffie–Hellman key exchange ⓘ

this entity surface form: Diffie–Hellman

TLS → supportsAlgorithmFamily → Diffie–Hellman key exchange ⓘ

this entity surface form: Elliptic Curve Diffie–Hellman

TLS 1.0 → supportsCipherSuite → Diffie–Hellman key exchange ⓘ

RFC 2419 → title → Diffie–Hellman key exchange ⓘ

this entity surface form: Key Exchange Algorithm for the Secure Shell (SSH) Transport Layer Protocol

Noise protocol framework → uses → Diffie–Hellman key exchange ⓘ

RFC 7919 → usesAlgorithm → Diffie–Hellman key exchange ⓘ

this entity surface form: finite-field Diffie-Hellman

RFC 7919 → usesAlgorithm → Diffie–Hellman key exchange ⓘ

this entity surface form: ephemeral Diffie-Hellman