protected function generateMask()
    {
        if (extension_loaded('openssl')) {
            return openssl_random_pseudo_bytes(4);
        } else {
            // SHA1 is 128 bit (= 16 bytes)
            // So we pack it into 32 bits
            return pack('N', sha1(spl_object_hash($this) . mt_rand(0, PHP_INT_MAX) . uniqid('', true), true));
        }
    }
protected function generateMask()
    {
        if (extension_loaded('openssl')) {
            return openssl_random_pseudo_bytes(4);
        } else {
            // SHA1 is 128 bit (= 16 bytes)
            // So we pack it into 32 bits
            return pack('N', sha1(spl_object_hash($this) . mt_rand(0, PHP_INT_MAX) . uniqid('', true), true));
        }
    }
protected function generateMask ( ) { if ( extension_loaded ( 'openssl' ) ) { return openssl_random_pseudo_bytes ( 4 ) ; } else { // SHA1 is 128 bit (= 16 bytes) // So we pack it into 32 bits return pack ( 'N' , sha1 ( spl_object_hash ( $ this ) . mt_rand ( 0 , PHP_INT_MAX ) . uniqid ( '' , true ) , true ) ) ; } }
Generates a suitable masking key

@return string
Generates a suitable masking key