### Assertion

Following are the attributes in the Assertions group. (The total valid duration of an assertion is defined by the values set in both attributes.)

#### Assertion Timeout

This attribute specifies the number of seconds before a timeout occurs on an assertion. The default is 420.

#### Assertion Skew Factor for notBefore Time:

This attribute is used to calculate the `notBefore` time of an assertion. For example, if the `IssueInstant` is `2002-09024T21:39:49Z`, and the `Assertion Skew Factor notBefore Time` value is set to 300 seconds (180 is the default value), the `notBefore` attribute of the conditions element for the assertion would be `2002-09-24T21:34:49Z`.