code: public byte[] encrypt(InputStream data, KeyType keyType) throws IORuntimeException {
  		return encrypt(IoUtil.readBytes(data), keyType);
  	}
docs: 加密
  
  @param data 被加密的数据流
  @param keyType 私钥或公钥 {@link KeyType}
  @return 加密后的bytes
  @throws IORuntimeException IO异常