# The One-Way Function.

*From*: adacrypt <austin.obyrne@xxxxxxxxxxx>*Date*: Sun, 12 Feb 2012 06:16:07 -0800 (PST)

Two points in space can be defined by the position vector that

connects the two points.

In everyday standard usage one of the points is taken to be fixed at

(0,0,0) and every other point in the whole of space can be expressed

as being relative to this point.

But users are not bound to always uses (0,0,0) as the standard

reference and they can agree between themselves to use another private

reference point at say (x,y,z ) to define points in space whenever

they need to. The position vector is then totally different to what

it would be relative to (0,0,0). Only the users know just how

different because they alone are privy to (x,y,z) which could be any

point in the infinity of space.

With knowledge of (x,y,z) any person who knows this can navigate to

(0,0,0) and find the correct position vector relative to (0,0,0) when

that is needed but (x,y,z) could be any one of an infinite number of

confusingly different values in the whole of space when users decide

to keep it secret.

There is no mathematical means whatever by which (x,y,z) can be

deduced only the users know and they alone can provide the information

(but of course they are not telling).

When the users are Alice and Bob in a secure communications scheme

this ploy is called a change-of-origin. I liken it to a transfer of

data from a human memory to a computer memory that they alone can

implement and supply the correct values of (x,y,z) that enable

decryption to proceed with a correct result.

They calculate ciphertext according to (0,0,0) but publish it as being

relative to (x,y.z) and go back to (0,0,0) again at decryption time.

I am calling this a definitive one-way mathematical function in

cryptography – one-way simply because that is what it is i.e. non-

invertible by any mathematical means albeit a proper mathematical

function per se at the same time.

This powerful ploy guarantees my cipher against the attack described

as attack 1) that is foremost in basic design priority, called known

ciphertext attack.

I have no evidence that there is such a thing in academia as a “one-

way” function in mathematical parlance. (Never mind the Cryptography

Handbooks – they are not quotable outside of cryptography).

Anybody? I would appreciate any information but please quote the

source.

- adacrypt

.

**Follow-Ups**:**Re: The One-Way Function.***From:*Pubkeybreaker

**Re: The One-Way Function.***From:*Mark Murray

**Re: The One-Way Function.***From:*FireXware

**Re: The One-Way Function.***From:*unruh

- Prev by Date:
**Re: Making the Ciphertext String Itself Truly Random – The Conjecture.** - Next by Date:
**Re: The One-Way Function.** - Previous by thread:
**Making the Ciphertext String Itself Truly Random – The Conjecture.** - Next by thread:
**Re: The One-Way Function.** - Index(es):