Re: [RFC][PATCH] Make cryptoapi non-optional?

Andries Brouwer
2003-08-15T07:30:09Z

On Thu, Aug 14, 2003 at 06:17:13PM -0600, Val Henson wrote:

> See Matt Mackall's earlier post on correlation, excerpted at the end
> of this message. Basically, with two strings x and y, the entropy of
> x alone or y alone is always greater than or equal to the entropy of x
> xored with y.
>
> entropy(x) >= entropy(x xor y)
> entropy(y) >= entropy(x xor y)

Is this trolling? Are you serious?
Try to put z = x xor y and apply your insight to the strings x and z.