[1] RFC 7030 - Enrollment over Secure Transport ( 版) <https://tools.ietf.org/html/rfc7030>
[2] RFC 7894 - Alternative Challenge Password Attributes for Enrollment over Secure Transport () <https://tools.ietf.org/html/rfc7894>
[3] RFC 7030 - Enrollment over Secure Transport () <https://tools.ietf.org/html/rfc7030>