STINNER Victor added the comment: > Is there a way to read from /dev/urandom without blocking? If not, > _PyOS_URandom() may use arc4random() on FreeBSD if block is false. I suggest > to enhance _PyOS_URandom() after the Python 3.5.2 release.
See the issue #22542 "Use arc4random under OpenBSD for os.urandom() if /dev/urandom is not present". It looks like arc4random() is now initialized with getentropy(KEYSZ+IVSZ) (32+8 = 40 bytes) on OpenBSD: http://bxr.su/OpenBSD/lib/libc/crypt/arc4random.c getentropy() is non-blocking. By the way, os.urandom() is now implemented with getentropy() on OpenBSD. ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue27266> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
