仕様書

[1] RFC 5280 - Internet X.509 Public Key Infrastructure Certificate and Certificate Revocation List (CRL) Profile (2015-02-22 15:44:10 +09:00 版) http://tools.ietf.org/html/rfc5280#section-4.1.2.4
[5] RFC 5280 - Internet X.509 Public Key Infrastructure Certificate and Certificate Revocation List (CRL) Profile (2015-02-22 15:44:10 +09:00 版) http://tools.ietf.org/html/rfc5280#section-4.2.1.6

構文

[2] 値は X.501 Name です >>1。

文脈

[3] 証明書の TBSCertificate の欄の1つです。

[4] インターネット電子メールアドレス、DNS名、IPアドレス、URI を subject とする時は、 SAN も使わなければなりません >>5。

[6] (2014-11-01 05:54:38 +09:00 版) https://cabforum.org/wp-content/uploads/BRv1.2.3.pdf#page=11

Issuing CA: In relation to a particular Certificate, the CA that issued the Certificate. This could be either a Root
CA or a Subordinate CA.