Credentials

Cryptography

Credentials in cryptography establish the identity of a party to communication. Usually they take the form of machine-readable cryptographic keys and/or passwords. Cryptographic credentials may be self-issued, or issued by a trusted third party; in many cases the only criterion for issuance is unambiguous association of the credential with a specific, real individual or other entity. Cryptographic credentials are often designed to expire after a certain period, although this is not mandatory. An X.509public key certificate is an example of a cryptographic credential.