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FormsAuthentication::Decrypt Method

.NET Framework 4.5

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, nullptr is returned.

Exceptions

Exception	Condition
ArgumentException	encryptedTicket is nullptr. - or - encryptedTicket is an empty string (""). - or - The length of encryptedTicket is greater than 4096 characters. - or - encryptedTicket is of an invalid format.

Exception

Condition

ArgumentException

encryptedTicket is nullptr.

- or -

encryptedTicket is an empty string ("").

- or -

The length of encryptedTicket is greater than 4096 characters.

- or -

encryptedTicket is of an invalid format.

Version Information

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

Platforms

Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Reference

FormsAuthentication Class

System.Web.Security Namespace

Other Resources

ASP.NET Web Application Security

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