a0a9560258
Close /dev/urandom and drop cached getrandom() data after forking helper processes to avoid them getting the same sequence of random numbers (e.g. two NTS-KE helpers generating cookies with identical nonces). arc4random() is assumed to be able to detect forks and reseed automatically. This is not strictly necessary with the current code, which does not use the GetRandom functions before the NTS-KE helper processes are forked, but that could change in future. Also, call the reset function before exit to close /dev/urandom in order to avoid valgrind reporting the file object as "still reachable". |
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