Regulation on the Electronic Exchange Operations of Official Documents of Government Agencies Article 9
When an electronic official document exchange is conducted, the document receipt and dispatch procedures shall be handled by means of electronic authentication, and other security control measures may be additionally adopted as necessary.
中文原文 機關公文電子交換作業辦法第9條
機關公文電子交換之收、發文程序，應採電子認證方式處理，並得視需要增加其他安全管制措施。