Encrypting Redis Connection String in ASP.NET Web Forms Application

[sureshgmail]

I am using a legacy ASP.NET Web Forms application. For session state management, I am utilizing "Microsoft.Web.RedisSessionStateProvider" version 5.0.4 to connect to my on-premises Redis instance. The connection string is specified in the web.config file, and I am successfully able to establish a connection and save/retrieve session data from Redis.

Below is the connection string I'm using to connect to the Redis Instance

<sessionState mode="Custom" customProvider="MySessionStateStore">
  <providers>
    <add name="MySessionStateStore" type="Microsoft.Web.Redis.RedisSessionStateProvider" 
           connectionString="RedisServerName:Port,password=mypassword,ssl=True,sslProtocols=Tls12" />
  </providers>
</sessionState>

Issue
The connection string currently includes the password in plain text, which is visible to anyone with access to the web.config file. This exposes a security risk as the password is not encrypted.

Objective
I need a way to encrypt the entire connection string in the web.config file so that the password is not exposed in plain text.

Considerations

• Current Configuration: I have achieved switching the session store to Redis without any code changes, solely by modifying the web.config file.
• Impact of Encryption: If the connection string is encrypted, will it necessitate code changes or the development of a custom session state provider?

Request

• Provide a solution or best practice to encrypt the connection string in the web.config file.
• Clarify if encryption will require modifications to the existing code or the implementation of a custom session state provider.

Thank you for your assistance.