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- use openssl_random_pseudo_bytes if available (thanks wise.man!)

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git-svn-id: http://phpseclib.svn.sourceforge.net/svnroot/phpseclib/trunk@187 21d32557-59b3-4da0-833f-c5933fad653e
This commit is contained in:
Jim Wigginton 2011-11-24 18:32:49 +00:00
parent b1c7fed946
commit e8d6d8d165
1 changed files with 10 additions and 0 deletions
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10
phpseclib/Crypt/Random.php
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@ -63,6 +63,16 @@ function crypt_random($min = 0, $max = 0x7FFFFFFF)
return $min;
}
if (function_exists('openssl_random_pseudo_bytes')) {
// openssl_random_pseudo_bytes() is slow on windows per the following:
// http://stackoverflow.com/questions/1940168/openssl-random-pseudo-bytes-is-slow-php
if ((PHP_OS & "\xDF\xDF\xDF") != 'WIN') { // PHP_OS & "\xDF\xDF\xDF" == strtoupper(substr(PHP_OS, 0, 3)), but a lot faster
extract(unpack('Nrandom', openssl_random_pseudo_bytes(4)));
return abs($random) % ($max - $min) + $min;
}
}
// see http://en.wikipedia.org/wiki//dev/random
static $urandom = true;
if ($urandom === true) {