I don't remember using any other wallet honestly. I have the same files for my LTC, DOGE, and PTS from back in the day, and I distinctly remember using the core programs. I'm not sure where to go from here.

I (stupidly) backed them up to my Google Drive and left them there ever since. None of those files have an extension on them, and I wouldn't have removed them unless some set of instructions told me to do so.

UPDATE: Looks like it was the Bitcoin Mobile Wallet. Trying now.

EDIT: Definitely was Bitcoin Mobile Wallet, along with the others, which was base64 aes-256 encrypted. I found out using openssl, but the passwords I remember were incorrect, so they're lost unless I can remember them. Oh well. I wasn't worried that I had a TON of coin in those wallets, just looking for a way to decrypt them. Of course, IIRC, no amount of computing power could decrypt it. :/

I have a bitcoin backup with what I assume is my private keys (and encrypted) but it's in a plain file with no extension. I backed them up to my Google Drive back in '13 and am now trying to figure out how to access them. I'm about 90% sure I know the password, but I don't know what to do with this file.

It contains letters, numbers, some symbols, a few backslashes, and nothing more. I'm almost half-tempted to post the file here, but I just want to try and recover it on my own. I know there is very little in the wallet itself as my much bigger investment in BTC is safe in cold storage.

Does anyone know how I can access this unknown file? I had to have backed it up from BitcoinQT or similar.