I want to encrypt an HTML document. My question is, if the following is known, is that going to weaken encryption?
- It is a text-based document
- It starts with
<DOCTYPE HTML>or a few variants of
- This is followed by an
<HTML>tag, followed by a
<HEAD>tag, which contains a number of '
Would this knowledge help a hacker to decrypt without the decrypt key? Would such knowledge make my documents effectively un-encryptable?
My apologies if this is a very simple question. I am a neophyte.