this post was submitted on 10 Aug 2023
538 points (97.9% liked)
Programmer Humor
19187 readers
1194 users here now
Welcome to Programmer Humor!
This is a place where you can post jokes, memes, humor, etc. related to programming!
For sharing awful code theres also Programming Horror.
Rules
- Keep content in english
- No advertisements
- Posts must be related to programming or programmer topics
founded 1 year ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
Anyone willing to drop some learning on a lay person? Is encrypted data less compressable because it lacks the patterns compression relies on?
Or, is it less secure to encrypt first because smart people things? I know enough about cryptography to know I know fuck all about cryptography.
It's not compressible at all. You will end-up with a file that is larger than the original.
Whether compressing before you encrypt leaks information, or not compressing is what leaks, or it's irrelevant is complicated to decide and depends on the details of what you are doing. But encrypting and then compressing is a bit worse than useless, and always a mistake.
Also might be faster to encrypt a compressed file, since it will be smaller?
Yes.