I simply refuse to believe that the NSA cant do simple SSL interception to read your network traffic. This idea that they cant access your data doesnt hold water with me.
If you are using a VPN service, they utilize AES (Advanced Encryption Standard) with 256-bit keys also known as AES-256.
I have never heard of AES-256 with a strong password being cracked. Perhaps someone else here can comment on that. If it gets cracked, it is probably due to social engineering. I do not thing a brute force attack can be made on it, even with the resources of the government.
You are describing a man in the middle attack. That is not what this is about.