Chaotic evil is encrypting, compressing, then encrypting again.
Then decompress after. Let fear be your cypher.
When playing football, to keep the socks from riding down our legs, we used to put loose rubber bands on top of them, near the top of the sock. Then to avoid the rubberbands from riding up above the sockline, we used to fold the sock over the rubberbands downwards. Then to avoid the fold from being undone during play another rubberband had to be put on top of the folded part.
Sounds similar to this. Just thought it was notable.
Why didn’t you guys just buy good socks? Or those sock suspenders?
Removed by mod
That’s like md5(sha512(“somefile.blah”))
The encryption: base64 encoding
Nah, you just XOR the data with itself and it becomes uncrackable.
Also after encryption like this the result can be compressed down to 4 bytes as long as the data is not larger than around 4Gb, 8 bytes if you need more.
My god, that is absolute perfect encryption (completely uncrackable by brute force) and compression. This is genius and I’m gonna switch all my data to this encryption scheme. Now I just need somewhere to store the decryption keys…
You are truly a mastermind.
What an excellent username for such a chain of comments
SHA-256
The real question is do you encrypt-and-sign or sign-and-encrypt?
Encrypt then sign. Verification is often much faster than (or at worst as fast as) decryption. Signature can also be verified without decryption key, making it possible to verify the data along the way.
Encrypt then sign. Always authenticate before any other operations like decryption. Don’t violate the cryptographic doom principle.
Don’t compress encrypted data since it opens you up to attacks like CRIME, unless it’s at rest and static data.
If that’s true, what’s to stop someone else from just compressing it themself and opening the same attack vector?
Encrypted data cannot be compressed anyway
It can. Just not lossless. Which it means it can’t.
Doesn’t actually matter
Encrypted data compresses much worse than non-encrypted data, so it does matter in terms of size.
It really does. Apparently-random data can’t be compressed at all, by the pigeonhole principle.
I mean, you could run it through whatever algorithm for fun, but it won’t accomplish anything.
Don’t know about gz but zip files can be encrypted using passwords
