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http://issues.apache.org/bugzilla/show_bug.cgi?id=31440 ------- Additional Comments From [EMAIL PROTECTED] 2008-01-25 10:10 ------- Created an attachment (id=21429) --> (http://issues.apache.org/bugzilla/attachment.cgi?id=21429&action=view) patch against httpd-2.2.8 to resolve weak PRNG seeding Andreas, I think you're on the right track, but your patch only adds the appearance of greater randomness. The core problem here is poor seeding of the PRNG. Every salted output from htpasswd starts with using time() to feed srand(). Even with your patch, htpasswd will always use the same seed at the any given time. The most important thing that needs to change is the calls to srand(). Here's a patch that keeps your nice 48-bit padding and adds better seeding. If the user sets a RANDOM_SEED environment variable, htpasswd will use that file/device. If not, it will try to use /dev/urandom. If it cannot use /dev/urandom or the user provides an unusable file/device name, it will fall back to using time() but will print a warning to STDERR. Also (untested!) if the user is on a platform with 32-bit integers, htpasswd will re-seed the PRNG as needed, to improve the chances of a true 48-bit salt. -Peter -- Configure bugmail: http://issues.apache.org/bugzilla/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug, or are watching the assignee. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
