Updated Entropy Patch

[Michael Casadevall]

entropy.c
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entropy.diff
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entropy.h
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This is an updated version of my original entropy patch (both entropy  
files go into gnumach/device). It exposes a new interface for adding  
entropy, entropy_putdata, removes the twisting code, and now hooks in  
additional places. I'm still having trouble getting good sources on  
entropy, the following are used at the moment:

Net packet headers (I would use the entire packet, but it doesn't  
appear to be an easy way to get to this in the linux code)
Keyboard
Mouse (untested; no mouse on my system)
Console device

What I wanted to add was:
Interrupts (I don't know enough about ASM to add the call though)

What is also in the patch but disabled due to the fact I don't think  
it makes good entropy:
linux_blkdevice_random (this only generates 03 due to the way we use  
the Linux driver code)
Mach IPC messages (I find the data isn't THAT random, and each  
message is mostly empty)

Any suggestions on where to hook this throughout the kernel? (and I  
am working on a random translator, I just haven't had much time)
Michael

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