*
     * 
     * @param src
     * @param si
     */
    public SID ( byte[] src, int si ) {
        this.revision = src[ si++ ];
        this.sub_authority_count = src[ si++ ];
        this.identifier_authority = new byte[6];
        System.arraycopy(src, si, this.identifier_authority, 0, 6);
        si += 6;
        if ( this.sub_authority_count > 100 )

        ArrayList list = new ArrayList(sids.length);
        int si;

synchronized (sid_cache) {
        for (si = 0; si < length; si++) {
            SID sid = (SID)sid_cache.get(sids[offset + si]);
            if (sid != null) {
                sids[offset + si].type = sid.type;
                sids[offset + si].domainName = sid.domainName;
                sids[offset + si].acctName = sid.acctName;
            } else {