Where to store db passwords when using windows net or asp net applications


When developing or ASP.NET applications that require database access, one important consideration is how to securely store database passwords. Storing passwords in text or hardcoding them in the application code is highly discouraged as it poses a significant risk. In this article, we will explore some best for storing database passwords in Windows and ASP.NET applications.

Configuration Files

One common approach to store database passwords in Windows or ASP.NET applications is by utilizing configuration files. These files provide a centralized location to store sensitive information, such as connection strings and passwords, separate from the application code.

To store the database password in a configuration file, you can create a section specifically for database settings. Here's an example of how you can define a connection string with the password stored in the configuration file:


In the above example, the password “myPassword” is stored in the configuration file. This approach allows you to easily update the password without modifying the application code.

Using Environment

Another approach to securely store database passwords is by utilizing environment variables. Environment variables are system-wide variables that can be accessed by applications running on the same machine.

To store the database password in an environment variable, you can set the variable value on the machine where the application is deployed. Here's an example of how you can retrieve the password from an environment variable in your application code:

string password = Environment.GetEnvironmentVariable("DB_PASSWORD");

In the above example, the password is retrieved from the “DB_PASSWORD” environment variable. By using environment variables, you can keep the password separate from the application code and easily update it without redeploying the application.

Using Secure Credential Stores

In some cases, you may need to store the database password in a more secure manner, especially if the application is deployed on multiple or if you want to restrict access to the password. Secure credential stores, such as the Windows Credential Manager or Key Vault, provide a secure way to store and retrieve sensitive information.

Using a secure credential store involves storing the password outside of the application code and accessing it programmatically when needed. The specific implementation may vary depending on the chosen credential store, but the general idea is to store the password securely and retrieve it using appropriate APIs.


Storing database passwords securely is crucial for the overall security of Windows and ASP.NET applications. By utilizing configuration files, environment variables, or secure credential stores, you can ensure that sensitive information remains protected. to avoid storing passwords in plain text or hardcoding them in the application code to minimize the risk of access.

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