[1] RFC 7030 - Enrollment over Secure Transport (2015-02-01 21:11:28 +09:00 版) https://tools.ietf.org/html/rfc7030

[2] RFC 7894 - Alternative Challenge Password Attributes for Enrollment over Secure Transport (2016-06-23 20:15:41 +09:00) https://tools.ietf.org/html/rfc7894

[3] RFC 7030 - Enrollment over Secure Transport (2016-06-19 16:27:56 +09:00) https://tools.ietf.org/html/rfc7030