STINNER Victor <victor.stin...@haypocalc.com> added the comment: "Given that a user has an application with an oracle function that returns the hash of a unicode string, an attacker can probe tenth of thousand one and two character unicode strings. That should give him/her enough data to calculate both seeds. hash("") already gives away lots of infomration about the seeds, too."
Sorry, but I don't see how you compute the secret using these data. You are right, hash("\0") gives some information about the secret. With my patch, hash("\0")^1 gives: ((prefix * 1000003) & HASH_MASK) ^ suffix. (hash("\0")^1) ^ (hash("\0\0")^2) gives ((prefix * 1000003) & HASH_MASK) ^ ((prefix * 1000003**2) & HASH_MASK). ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue13703> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com