Enforcement Rules of the Electronic Signatures Act Article 6

The expression "a government agency or a juristic person that issues certificates" as set forth in Subparagraph 5, Article 2 of the Act shall mean the nominal issuer as indicated on the certificate.
中文原文 電子簽章法施行細則第6條
本法第二條第一項第五款所稱簽發憑證之機關、法人,係指憑證上所載之簽發名義人。

English translation for reference only; the Chinese text prevails. Not legal advice.