iat
Registry Context
`iat` identifies when the JWT was issued. If included, its value must be a JSON number containing a NumericDate value. Use of the claim is optional.
Technical Summary
`iat` is the registered JWT issued-at claim. Its value, when present, MUST be a JSON number containing a NumericDate value.
When Used
Use it when a consumer needs to determine the JWT's issuance time or age.
Normative Requirements
JWT producer
RFC 7519 - Section 4.1.6
The `iat` claim value MUST be a number containing a NumericDate value..
Condition: When the `iat` claim is present.
Its value MUST be a number containing a NumericDate value.
RFC 7519 - Section 4.1.6
Use of the `iat` claim is OPTIONAL..
Use of this claim is OPTIONAL.
Validation Guidance
Report an error when a present `iat` value is not a JSON number containing a NumericDate value.
Do not require the `iat` claim to be present in every JWT.
Reference
Details
- Entry Id
iat- Claim Name
iat- Claim Description
Issued At- Change Controller
IESG- Reference
RFC7519 - Section 4.1.6