Hash-based Message Authentication Code

E832816
cryptographic primitive message authentication code

Hash-based Message Authentication Code (HMAC) is a cryptographic mechanism that uses a hash function and a secret key to verify both the integrity and authenticity of a message.

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Observed surface forms (1)

Surface form Occurrences
Keyed-Hash Message Authentication Code 1

Statements (50)

Predicate Object
instanceOf cryptographic primitive ⓘ
message authentication code ⓘ
abbreviation HMAC ⓘ
alternativeTo CBC-MAC NERFINISHED ⓘ
CMAC NERFINISHED ⓘ
basedOn iterated hash function construction ⓘ
belongsTo symmetric cryptography ⓘ
canBeTruncatedTo shorter tag length ⓘ
commonlyUses MD5 NERFINISHED ⓘ
SHA-1 ⓘ
SHA-256 NERFINISHED ⓘ
SHA-512 NERFINISHED ⓘ
definedIn RFC 2104 NERFINISHED ⓘ
formalSecurityModel PRF-based security model ⓘ
hasProperty collision resistance inherited from hash function ⓘ
computationally infeasible to forge without key ⓘ
deterministic output for given key and message ⓘ
keyed construction ⓘ
hasPurpose data origin authentication ⓘ
message authentication ⓘ
message integrity verification ⓘ
introducedBy Hugo Krawczyk NERFINISHED ⓘ
Mihir Bellare NERFINISHED ⓘ
Ran Canetti NERFINISHED ⓘ
introducedInYear 1996 ⓘ
isResistantTo length extension attacks ⓘ
notProvides non-repudiation ⓘ
outputDependsOn message ⓘ
secret key ⓘ
underlying hash function ⓘ
provides authentication ⓘ
integrity protection ⓘ
tamper detection ⓘ
recommendedKeyLengthAtLeast 128 bits ⓘ
requires shared secret key between sender and receiver ⓘ
securityReliesOn pseudorandomness of the underlying hash function ⓘ
secrecy of the key ⓘ
standardizedBy Internet Engineering Task Force ⓘ
surface form: IETF

NIST NERFINISHED ⓘ
standardizedIn FIPS 198-1 NERFINISHED ⓘ
tagLengthLimitedBy output size of underlying hash function ⓘ
usedIn API authentication ⓘ
IPsec NERFINISHED ⓘ
JSON Web Tokens NERFINISHED ⓘ
OAuth NERFINISHED ⓘ
SSH NERFINISHED ⓘ
TLS ⓘ
digital signature schemes as building block ⓘ
uses cryptographic hash function ⓘ
secret key ⓘ

Referenced by (2)

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

RFC 2104 → defines → Hash-based Message Authentication Code ⓘ
FIPS 198-1 → defines → Hash-based Message Authentication Code ⓘ
this entity surface form: Keyed-Hash Message Authentication Code