On Tue, 25 Jan 2000, Pavel Machek wrote:
>You mean -- like time in jiffies? That is 10msec resolution, do you
>recall?
>
>I think that even bad hw RNG is going to be better than that.
Yeah, 10ms isn't very good (though isn't it 1ms on Alphas?). But
add_timer_randomness() doesn't always use jiffies. I quote from the
source:
#if defined (__i386__)
if (boot_cpu_data.x86_capability & X86_FEATURE_TSC) {
__u32 high;
__asm__(".byte 0x0f,0x31"
:"=a" (time), "=d" (high));
num ^= high;
} else {
time = jiffies;
}
#else
time = jiffies;
#endif
Dave
David Whysong dwhysong@physics.ucsb.edu
Astrophysics graduate student University of California, Santa Barbara
My public PGP keys are on my web page - http://www.physics.ucsb.edu/~dwhysong
DSS PGP Key 0x903F5BD6 : FE78 91FE 4508 106F 7C88 1706 B792 6995 903F 5BD6
D-H PGP key 0x5DAB0F91 : BC33 0F36 FCCD E72C 441F 663A 72ED 7FB7 5DAB 0F91
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