How to Encrypt and Decrypt Password from web.config in C#

Encrypting and decrypting passwords in a web.config file using C# is essential for securing sensitive information. Storing passwords in plain text poses a significant security risk as anyone with access to the file can easily view the sensitive information. In this blog post, we will discuss the steps to encrypt and decrypt passwords in a web.config file using C#.

Encrypting Password in web.config

To encrypt a password in the web.config file, you can utilize the aspnet_regiis tool that comes with the .NET Framework. Follow these steps:

1. Open the command prompt in administrator mode.
2. Navigate to the location where aspnet_regiis tool is located (usually in %windir%\Microsoft.NET\Framework\v[version]).
3. Run the command: aspnet_regiis -pef 'connectionStrings' '[path_to_web.config]'
4. Enter a password when prompted. This password will be used to encrypt the connection strings in the web.config file.

Decrypting Password in web.config

To decrypt the password in the web.config file, follow these steps:

1. Open the command prompt in administrator mode.
2. Navigate to the location where aspnet_regiis tool is located.
3. Run the command: aspnet_regiis -pdf 'connectionStrings' '[path_to_web.config]'
4. Enter the password that was used to encrypt the connection strings.

By following these steps, you can securely encrypt and decrypt passwords in the web.config file using C#, protecting your sensitive information from unauthorized access.

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