code: public static byte[] getValue(final byte[] pData, final ITag... pTag) {
  
  		byte[] ret = null;
  
  		if (pData != null) {
  			TLVInputStream stream = new TLVInputStream(new ByteArrayInputStream(pData));
  
  			try {
  				while (stream.available() > 0) {
  
  					TLV tlv = TlvUtil.getNextTLV(stream);
  					if (tlv == null) {
  						break;
  					}
  					if (ArrayUtils.contains(pTag, tlv.getTag())) {
  						return tlv.getValueBytes();
  					} else if (tlv.getTag().isConstructed()) {
  						ret = TlvUtil.getValue(tlv.getValueBytes(), pTag);
  						if (ret != null) {
  							break;
  						}
  					}
  
  				}
  			} catch (IOException e) {
  				LOGGER.error(e.getMessage(), e);
  			} finally {
  				IOUtils.closeQuietly(stream);
  			}
  		}
  
  		return ret;
  	}
docs: Method used to get Tag value
  
  @param pData
  data
  @param pTag
  tag to find
  @return tag value or null