Password/Key protection

I am implementing payment gateways and I need to protect its key and password for security reason. Also some web-services keys and password in 开发者_开发问答ASP.NET.

Any ideas on how to implement them?

You can encrypt/decrypt using RSA Encryption. It's a secure way and uses asymmetric cryptography.

• In JavaScript you can use RSA In JavaScript by ohdave
• And in ASP.NET you can use this implementation