Re: /dev/random vs. /dev/urandom

[Chris Friesen <cfriesen@xxxxxxxxxxxxxxxxxx>]

Ron Peterson wrote:
> When I compile and run the code below, the string of octal characters
> generated by reading /dev/random contains long strings of zeroes.  I was
> under the impression that /dev/random is "more random" than
> /dev/urandom, and will block when it runs out of entropy until it
> gathers more.  It's only when RAND_LEN is on the largish side that these
> strings of zeroes appear.

Just a shot in the dark--could you check the return value of read()? 
Maybe it's not filling up your entire buffer.

Chris
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