My Certificate Import; Certificate File Formats - ZyXEL Communications NBG410W3G User Manual

11.8 My Certificate Import

Click SECURITY > CERTIFICATES > My Certificates and then Import to open the My
Certificate Import screen. Follow the instructions in this screen to save an existing certificate
from a computer to the ZyXEL Device.
You can only import a certificate that matches a corresponding certification
request that was generated by the ZyXEL Device (the certification request
contains the private key). The certificate you import replaces the
corresponding request in the My Certificates screen.
One exception is that you can import a PKCS#12 format certificate without a
corresponding certification request since the certificate includes the private
key.
You must remove any spaces from the certificate's filename before you can
import it.

11.8.1 Certificate File Formats

The certification authority certificate that you want to import has to be in one of these file
formats:
• Binary X.509: This is an ITU-T recommendation that defines the formats for X.509
certificates.
• PEM (Base-64) encoded X.509: This Privacy Enhanced Mail format uses 64 ASCII
characters to convert a binary X.509 certificate into a printable form.
• Binary PKCS#7: This is a standard that defines the general syntax for data (including
digital signatures) that may be encrypted. The ZyXEL Device currently allows the
importation of a PKS#7 file that contains a single certificate.
• PEM (Base-64) encoded PKCS#7: This Privacy Enhanced Mail (PEM) format uses 64
ASCII characters to convert a binary PKCS#7 certificate into a printable form.
• Binary PKCS#12: This is a format for transferring public key and private key certificates.
The private key in a PKCS #12 file is within a password-encrypted envelope. The file's
password is not connected to your certificate's public or private passwords. Exporting a
PKCS #12 file creates this and you must provide it to decrypt the contents when you
import the file into the ZyXEL Device.
Be careful to not convert a binary file to text during the transfer process. It is
easy for this to occur since many programs use text files by default.
NBG410W3G Series User's Guide
Chapter 11 Certificates
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