I had a buddy who worked for the NSA for a bit before moving to the private sector. He didn't tell me much, but he did say that they rarely ever break the crypt

I had a buddy who worked for the NSA for a bit before moving to the private sector. He didn't tell me much, but he did say that they rarely ever break the crypto algorithm (even when compute resources are available), they almost always attack implementation flaws. That and story about what a pain in the ass the entry keypads were when you were a little hung over, especially since the coffee was on the other side. The digit locations weren't fixed, so you couldn't rely on muscle memory.