1
0
mirror of https://github.com/Tygs/0bin.git synced 2023-08-10 21:13:00 +03:00

zerobinpaste: seed sjcl prng from /dev/(u)random

This commit is contained in:
Mike Kazantsev 2013-04-29 23:52:48 +06:00 committed by fraggod@sacrilege
parent 353fac415a
commit 415516ee0c

View File

@ -88,6 +88,22 @@ paste_file = (content, name) ->
req.end() req.end()
# Seed sjcl prng from /dev/(u)random
do (bytes=64) ->
for src in ['/dev/urandom', '/dev/random', null]
break if not src or fs.existsSync(src)
if not src
console.error( 'ERROR: Failed to seed PRNG -'\
+ ' /dev/(u)random is unavailable, relying only on sjcl entropy sources' )
return
fd = fs.openSync(src, 'r')
buff = new Buffer(bytes)
fs.readSync(fd, buff, 0, bytes)
fs.closeSync(fd)
sjcl.random.addEntropy(
(buff.readUInt32BE(n) for n in [0..bytes/4]), bytes * 8, src )
# Loop over file args or read stdin # Loop over file args or read stdin
if not program.args or not program.args.length if not program.args or not program.args.length
process.stdin.resume() process.stdin.resume()