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    Glossary
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Session

Definitions:

  A persistent interaction between a subscriber and an endpoint, either an RP or a CSP. A session begins with an authentication event and ends with a session termination event. A session is bound by use of a session secret that the subscriber’s software (a browser, application, or OS) can present to the RP or CSP in lieu of the subscriber’s authentication credentials.
Sources:
NIST SP 800-63-3

  A persistent interaction between a subscriber and an end point, either a relying party or a Credential Service Provider. A session begins with an authentication event and ends with a session termination event. A session is bound by use of a session secret that the subscriber’s software (a browser, application, or operating system) can present to the relying party or the Credential Service Provider in lieu of the subscriber’s authentication credentials.
Sources:
NIST SP 1800-17b
NIST SP 1800-17c