How do I find the machineKey for web config?

How do I find the machineKey for web config?

To do this, please follow these instructions:

1. Go to IIS console on one of the webservers > Sites > select the Pyramid website > double-click on Machine Key icon in center pane.
2. In Machine Key dialog, click on Generate Keys and then Apply.
3. Copy the generated validation and decryption keys to the notepad.

How do I enable EnableViewStateMac?

Set the EnableViewStateMac attribute using the @ Page directive in the . aspx file. When the page is requested, the dynamically generated class sets the property. This attribute should never be set to false in a production Web site, even if the application or page does not use view state.

What is validation key and decryption key?

If you add the IsolateApps modifier to the validationKey value, ASP.NET generates a unique encrypted key for each application using each application’s application ID.” “decryptionKey specifies a manually assigned key.

What is MachineKey web config?

What Is Machine Key? The machineKey element in the ASP.NET web. config file specifies the algorithm and keys that ASP.NET will use for encryption. By default the validationKey and the decryptionKey keys are set to AutoGenerate which means the runtime will generate a random key for use.

Where is the MachineKey located?

A large number of files, ranging 50k or higher, are found in the operating system’s Machine Keys folder (typically C:\ProgramData\Microsoft\Crypto\RSA\MachineKeys).

What is the purpose of Enable view state MAC in asp net?

Description: ASP.NET ViewState without MAC enabled The ViewState is a mechanism built in to the ASP.NET platform for persisting elements of the user interface and other data across successive requests. The data to be persisted is serialized by the server and transmitted via a hidden form field.

What is machineKey in web config?

What is System Web machineKey?

The MachineKey class provides methods that expose the hashing and encryption logic that ASP.NET provides. For information about which encryption and hashing algorithms ASP.NET uses, and the key values that it uses with them, see machineKey Element (ASP.NET Settings Schema).

What is exception for validation of VIEWSTATE Mac failed?

Exception Details: System.Web.HttpException: Validation of viewstate MAC failed. If this application is hosted by a Web Farm or cluster, ensure that configuration specifies the same validationKey and validation algorithm. AutoGenerate cannot be used in a cluster. Source File: Line: 0 [ViewStateException: Invalid viewstate.

What causes a Mac validation failure in farm?

Each server in the farm will generate its own local key, and none of the servers in the farm will agree on which key to use. The result is that, if one server generates a __VIEWSTATE payload that a different server consumes, the consumer will experience a MAC validation failure.

What is an example of a Mac validation error?

A MAC validation error will resemble the following example: Server Error in ‘/’ Application. Validation of viewstate MAC failed. If this application is hosted by a web farm or cluster, ensure that configuration specifies the same validationKey and validation algorithm. AutoGenerate cannot be used in a cluster.

Why is the _ _ VIEWSTATE field protected by Mac?

If an attacker submitted a malicious __VIEWSTATE payload, the attacker could potentially trick the application into performing an action that it otherwise would not have performed. To prevent this kind of tampering attack, the __VIEWSTATE field is protected by a message authentication code (MAC).