Message 267950 - Python tracker

Message267950

Author	martin.panter
Recipients	christian.heimes, dstufft, martin.panter, vstinner
Date	2016-06-09.02:49:02
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1465440543.29.0.581467319212.issue27272@psf.upfronthosting.co.za>
In-reply-to

Content
If the seed is to be based on time.time(), why not use something based on hash(time.time()) to avoid the 1/256 s resolution? If there is a practical way to get pseudo-random data from the platform, it would be better to use that, rather than cooking up our own entropy from time.time(), PID, etc. But I guess that depends on the future of os.urandom() and friends. In the meantime, limiting to os.urandom(256) seems reasonable, though I’m not a random number or cryptography expert.

Content

If the seed is to be based on time.time(), why not use something based on hash(time.time()) to avoid the 1/256 s resolution?

If there is a practical way to get pseudo-random data from the platform, it would be better to use that, rather than cooking up our own entropy from time.time(), PID, etc. But I guess that depends on the future of os.urandom() and friends.

In the meantime, limiting to os.urandom(256) seems reasonable, though I’m not a random number or cryptography expert.

History
Date	User	Action	Args
2016-06-09 02:49:03	martin.panter	set	recipients: + martin.panter, vstinner, christian.heimes, dstufft
2016-06-09 02:49:03	martin.panter	set	messageid: <1465440543.29.0.581467319212.issue27272@psf.upfronthosting.co.za>
2016-06-09 02:49:03	martin.panter	link	issue27272 messages
2016-06-09 02:49:02	martin.panter	create