Using Keys To Generate Validation From Serial
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how to generate validationKey and decryption Key for web.config
This article describes how to create keys to use for encryption, decryption, and validation of Forms authentication cookie data. You can use the keys that you create in this article for the validationKey and decryptionKey attributes of the <machineKey> section in the <system.web> element in the web.config file or Machine.config.
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The following list outlines the recommended hardware, software, network infrastructure, and service packs that you need:
- Microsoft Windows 2000 or Microsoft Windows XP
- Microsoft .NET Framework
- Microsoft Internet Information Services (IIS)
Create the project
Create a Visual C# .NET console application:
- Start Visual Studio .NET.
- On File menu, point to New, and then click Project.
- Under Project Types, click Visual C# Projects.
- Under Templates, click Console application.
- Name the project HashConfigCs.
- Click OK.
Write the code to generate the keys
The following code reads two arguments that are passed from the command line:
- The first argument is the number of bytes that is used to create the decryptionKey attribute.
- The second argument is the number of bytes that is used to create the validationKey attribute.
The code uses a random number generator to create a random number of bytes based on the command-line arguments. After the random bytes are created, the bytes are formatted into a hexadecimal string that is suitable for use in the .config files.
Note The hexadecimal string that is created is twice the size of the value that is passed on the command line. For example, if you specify 24 bytes for a key, the resulting string is 48 bytes in length after the conversion. The valid values for decryptionKey is 8 or 24. This creates a 16 byte key for Data Encryption Standard (DES) or a 48 byte key for Triple DES, respectively. Valid values for validationKey are 20 to 64. This creates keys from 40 to 128 bytes in length. The output from the code is an entire <machineKey> element that you can copy and paste into a web.config file.
Add the following code to a .cs file: /vmware-fusion-11-key-generator.html.
Generate the hashes
Now you can compile the application. How to download showbox to iphone.
Run the application from a command prompt by passing in two integer values that are the size of the decryption and the validation keys. For example, if you named the console application HashConfigCs.exe, type the following syntax from the command line in the Bindebug directory of the application:
You can expect the application to return output that is similar to the following output:
Note for Machine.config
Update the configuration file
- Locate the Machine.config file.
- Locate the <system.web> section in the configuration file.
- Replace the <machineKey> section with the output from the console application. If the <machineKey> section does not exist, create it.
- Save the configuration file.
- Restart IIS on all servers in the Web farm for the Machine.config changes to take effect.
Troubleshooting
Make sure that the <machineKey> section has identical, explicit keys (that is, do not use the AutoGenerate option for attributes in the <machineKey> section) across the Web farm in the following scenarios:
- When you use Forms authentication.
- When you run session state in StateServer mode.
- When you want ViewState to be available across a Web farm because the enableViewStateMAC attribute is set to True by default.
More information
The machineKey section should be the same across the web farm in the following cases:
- When using Forms Authentication.
- When you run session state in StateServer mode.
- When you want viewstate to be available across a web farm since enableViewStateMac is turned on by default.
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Timm Bremus provided us with Serial Key Generator Converter tool that can be used to convert encrypted registration files into a .NET Core compatible format. Thanks Timm! |
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