Best practices for encrypting and decrypting passwords? (C#/.NET)

Question

I need to store and encrypt a password in a (preferably text) file, that I later need to be able to decrypt. The password is for another service that I use, and needs to be sent

Answer 1

Encrypted in AES if you must store it in a text file.

AES is better known as Rijndael in c#

http://www.obviex.com/samples/Encryption.aspx

Better place would be the registry, since it would protect other users of the machine getting to it.

Still not the best storing it anywhere that a user might be able to get to is dangerous a 1/2 way decent developer can load up your app in reflector and find your key.

Or there is System.Security.Cryptography.ProtectedData that someone else suggested.

The best you could do on a machine is create a certificate and encrypt/decrypt with it loaded and locked down in the machine's keystore. (Still have to deal with the certificate password being in your code)