# Interface: ImplicitAuthenticationResponseChecks

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Expected values and validation checks for an OpenID Connect Implicit Flow
response.

## Properties

### expectedState?

• `optional` **expectedState?**: `string` \| *typeof* `skipStateCheck`

Expected value of the `state` authorization response parameter. This value
must match exactly. When `undefined` the expectation is that there is no
`state` in the authorization response.

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### maxAge?

• `optional` **maxAge?**: `number`

ID Token [`auth\_time`](IDToken.md#auth_time) claim value will be checked
to be present and conform to this `maxAge` value. Use of this option is
required if you sent a `max_age` parameter in the authorization request.
Default is [ClientMetadata.default\_max\_age](ClientMetadata.md#default_max_age) and falls back to not
checking the claim's value beyond it being a number when present.
