Generate Machine Key Asp Net 4.5 Online
This tool will generate a valid random machine key used by ASP.NET for encryption, decryption, validation of forms-authentication and view-state data, and other purposes. Select your target version of ASP.NET and click the Generate Keys button. Oct 18, 2011 Machine key a unique key that differentiates one computer from others. And this key is used to create unique identifier when cookie is created in the client machine from a server side code. This key is generally present in the machine.config file when you install.NET framework that is generally not visible to the user as it remains in the.NET. Uncheck 'Automatically generate at runtime' for both the validation key and the decryption key. Click 'Generate Keys' under 'Actions' on the right side of the panel. Click 'Apply'. Setting Up the Machine Key Directly in the Web.config File. If you do not have access to the IIS management console, it is still possible to set-up a machine key for.
- In ASP.NET 4.5 the default is HMACSHA256. Also note that in ASP.NET 4.5 the following algorithms are no longer allowed in the Machine Key config: AES, 3DES, and MD5. Do machine keys change between environments? If you explicitly generate and set your own machine key in your web.config then the answer is No.
- Provides a way to encrypt or hash data (or both) by using the same algorithms and key values that are used for ASP.NET forms authentication and view state. MachineKey Class (System.Web.Security) Microsoft Docs.
- ASP.NET machineKey Generator This is an application that will generate a valid machineKey block with random, secure, hard-coded keys that you can paste inside the in your web.config or machine.config file.
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
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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
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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.
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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.
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.
The newly-configured data protection system is now ready for use inside the application.