(Small) bias in generation of random passkeys for pairing

[Pavel Machek]

Hi!

There's a (small) bias in passkey generation in bluetooth:

                get_random_bytes(&passkey, sizeof(passkey));
 		passkey %= 1000000;
		put_unaligned_le32(passkey, smp->tk);

(there are at least two places doing this).

All passkeys are not of same probability, passkey "000000" is more
probable than "999999", but difference is small.

Do we care?
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

Attachment: signature.asc
Description: Digital signature