Am Samstag 01 Mai 2010 23:11:28 schrieb Greg Oldendick: > On May 1, 2010, at 6:32 AM, Richard Troth wrote: > > > But the crypto cards have their own API. I'n asking about the kernel's > > entropy function. Or is there a way to get the kernel to use the > > crypto? > > > > > > > If you have the crypto card, you can load the prng.ko kernel module. It will > create a /dev/prandom device you can read from.
/dev/prandom is hardware supported pseudo random. See "Device Drivers, Features, and Commands" page 297 (313 in acrobat) http://public.dhe.ibm.com/software/dw/linux390/docu/lk33dd05.pdf The real random numbers from the crypto cards is available via /dev/hw_random See page 294 (310). If your application needs to use /dev/random, I think there are tools or daemons that feed entropy from hw_random into random. Christian ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
