Generate Machine Key Asp.net

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The same approach, by the way, works with ASP.NET: Replacing machineKey in ASP.NET The data protection system is built upon two core concepts - a data protection provider (represented by the IDataProtectionProvider interface), which is used to create a data protector (represented by the IDataProtector interface) by CreateProtector method. Jul 31, 2012  ASP.NET automatically generates a cryptographic key for each application and stores the key in the HKCU registry hive. This auto-generated key is used if there is no explicit machineKey element in the application’s configuration. May 20, 2015  How To Generate Machine Key In IIS Complete steps is described in this video regarding How To Generate Machine Key In IIS If you got any clarification on this, please write it. 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. I want to adjust the machine keys dynamically in code during runtime, for an IIS hosted ASP.NET MVC 4 website. The machine keys, encryption and validation keys as well as algorithms to use, are st. ASP.Net MachineKey Generator. The all-in-one ultimate online toolbox that generates all kind of keys! Every coder needs All Keys Generator in its favorites! It is provided for free and only supported by ads and donations. Mar 19, 2019  To enable the machine key works with the form authentication successfully, you may need to keep all the server use the same encryption and decryption key. You may also need to use generate keys button in action panel to generate the key manually, then you.

The implementation of the <machineKey> element in ASP.NET is replaceable. This allows most calls to ASP.NET cryptographic routines to be routed through a replacement data protection mechanism, including the new data protection system.

Package installation

Note

Asp.net Generate Machine Key

The new data protection system can only be installed into an existing ASP.NET application targeting .NET 4.5.1 or later. Installation will fail if the application targets .NET 4.5 or lower.

To install the new data protection system into an existing ASP.NET 4.5.1+ project, install the package Microsoft.AspNetCore.DataProtection.SystemWeb. This will instantiate the data protection system using the default configuration settings.

When you install the package, it inserts a line into Web.config that tells ASP.NET to use it for most cryptographic operations, including forms authentication, view state, and calls to MachineKey.Protect. The line that's inserted reads as follows.

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You can tell if the new data protection system is active by inspecting fields like __VIEWSTATE, which should begin with 'CfDJ8' as in the example below. 'CfDJ8' is the base64 representation of the magic '09 F0 C9 F0' header that identifies a payload protected by the data protection system.

Package configuration

The data protection system is instantiated with a default zero-setup configuration. However, since by default keys are persisted to the local file system, this won't work for applications which are deployed in a farm. To resolve this, you can provide configuration by creating a type which subclasses DataProtectionStartup and overrides its ConfigureServices method.

Below is an example of a custom data protection startup type which configured both where keys are persisted and how they're encrypted at rest. It also overrides the default app isolation policy by providing its own application name.

Tip

You can also use <machineKey applicationName='my-app' .. /> in place of an explicit call to SetApplicationName. This is a convenience mechanism to avoid forcing the developer to create a DataProtectionStartup-derived type if all they wanted to configure was setting the application name.

Generate Machine Key Asp.net Software

To enable this custom configuration, go back to Web.config and look for the <appSettings> element that the package install added to the config file. It will look like the following markup:

Fill in the blank value with the assembly-qualified name of the DataProtectionStartup-derived type you just created. If the name of the application is DataProtectionDemo, this would look like the below.

Generate Machine Key

The newly-configured data protection system is now ready for use inside the application.

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