That leaked data would be publicly available. Anyone with knowledge of your scheme would also be able to access that data.
That's often the case with backdoors.
Any encryption would be worthless because the encryption would take place client-side and all credentials thus would be exposed to the public as well.
Did you understand the point of private-public key crypto?
Because the script runs client-side, it also makes it extremely easy for a potential victim to examine your code to determine if it's malicious or not. And, even if they're too lazy to do so...
I doubt anyone would bother to examine the code to a sufficient level to find security flaws. Especially since the code seems a bit obfuscated.
How long did it take people to find out that Debian's crypto was flawed? RSA?
A private key is long. A PGP signature is short. So your victim's compromised signature would be 10x longer than the length of a normal PGP signature.
That just means that it takes 10 signed messages to leak all data. Maybe it bit more because you have to randomly pick one of 10 slots. Maybe a bit less because you can do fancy math.
At this point I am just going to cease replying to any of your posts because this discussion has become patently absurd. You have resorted to citing weaknesses that are common to any protocol that the user is too lazy to verify the safety of. What's next? It's unsafe because you might have a heart attack while using it?
Congratulations: you are the kid in the philosophy class that derails the conversation by asking "Yeah but how do we KNOW that?" over and over. Except the difference here is, I'm not being paid to, nor do I have the patience to wa...
Information security is a pretty big passion of mine; I don't think someone needs to have "something to hide" in order to make use of digital signing, encryption, etc. Another passion of mine is making things easier for other people to do. I've written a couple of tools that I think can be useful for the LW crowd.
Online PGP Signature: This is an online javascript-based tool which allows you to sign messages using your PGP private key. I love the idea of PGP-signed messages (I remember someone under the pseudonym "Professor Quirrell" handing out PGP-verified Quirrell points a few years back). The problem is, I had yet to find an easy way to do this that didn't involve downloading command-line based software. So I wrote this tool that uses open-sourced, javascript-based PGP libraries to let you easily sign messages in your browser.
The whole thing is client-side so your private key is never seen by me, but be smart about security. If you don't trust me, that's fine, just don't use the tool. But also remember that you could have a virus, your computer could be monitored, someone could be watching over your shoulder, etc. so please be smart about your security. But hopefully this can be helpful.
Decoy: an iPhone App: I wrote this after "The Fappening", where I was basically appalled at the terrible security practices that pretty much everyone uses when sending pictures back and forth. Decoy uses a combination of steganography and AES encryption to let you send images back and forth without having to sign up for an account or use some outside service that can be hacked or otherwise compromised.
You take the original picture, then you come up with a passphrase, then you take a "decoy" picture. The original picture is converted to base64 image data, which is then AES-encrypted using your passphrase. The resulting cipher text is then encoded into the pixels of the "decoy" picture, which is what gets saved on your phone and sent out. The "decoy" pictures are indistinguishable from any other picture on your or your recipients' camera rolls, and unless you have the passphrase, then the original image is thoroughly inaccessible.
If your phone is lost, hacked, stolen, or (more benignly) someone happens to be looking through pictures on your phone, all anyone will see are the "decoy" pictures. Without the password, those pictures are worthless. Although the app is primarily branded for, *ahem*, "personal use", there are plenty of other ways to use it. For example, my wife and I use it for things like sending pictures of sensitive physical documents like credit cards, birth certificates, social security cards, etc.
(full disclosure: although Decoy is free, it is ad-supported so I do financially benefit from people using the app. But on the bright side I'm an avowed rationalist and if I make a quajillion dollars with this app I will spend the vast majority of it on LW-friendly causes!)