csnotes/312/notes/hash.md

Cryptographic Hash Functions

Random Jargon

If you made it this far you know what all of this is but we need these terms because "muh academic vernacular"

• Variable Length Input
• Fixed size output

a = {
	'first',
	'second',
}

Both first & second as inputs result in distinct references of the same size.

• One-way property

You should not be able to use a hash result(i.e. reference) to find an input.

In English: Only inputs can find outputs, not the other way around.

• Two-way property/ Collision-free Property

2 identical data inputs will map to the same output