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Decrypt Method

FormsAuthentication.Decrypt Method

Creates a FormsAuthenticationTicket object based on the encrypted forms-authentication ticket passed to the method.

Namespace:  System.Web.Security
Assembly:  System.Web (in System.Web.dll)

public static FormsAuthenticationTicket Decrypt(
	string encryptedTicket
)

Parameters

encryptedTicket
Type: System.String

The encrypted authentication ticket.

Return Value

Type: System.Web.Security.FormsAuthenticationTicket
A FormsAuthenticationTicket object. If the encryptedTicket parameter is not a valid ticket, null is returned.

ExceptionCondition
ArgumentException

encryptedTicket is null.

- or -

encryptedTicket is an empty string ("").

- or -

The length of encryptedTicket is greater than 4096 characters.

- or -

encryptedTicket is of an invalid format.

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1
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