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$old_mix = $Hash->(pack "LaaaaLLLLaL" , $rand, $old_mix, "#" , $Host, '#', $$, $time, $ms, $count , $salt, $old_rand);
my $ret = encode_base64( $Hash->( pack "aL", $old_mix, $old_rand ) );
our $Hash = \&Digest::MD5::md5_base64;
$ret = substr( $ret, 0, $Truncate )