ZyXEL Communications ZyWall ATP series User Manual page 667

Table 286 Configuration > Object > Certificate > Trusted Certificates > Edit (continued)
LABEL
Signature Algorithm
Valid From
Valid To
Key Algorithm
Subject Alternative
Name
Key Usage
Extended Key Usage
Basic Constraint
MD5 Fingerprint
SHA1 Fingerprint
Certificate
Export Certificate
OK
Cancel
34.11.4.2 The Trusted Certificates Import Screen
Click Configuration > Object > Certificate > Trusted Certificates > Import to open the Trusted Certificates
Import screen. Follow the instructions in this screen to save a trusted certificate to the Zyxel Device.
Note: You must remove any spaces from the certificate's filename before you can import the
certificate.
Chapter 34 Object
DESCRIPTION
This field displays the type of algorithm that was used to sign the certificate. Some
certification authorities use rsa-pkcs1-sha1 (RSA public-private key encryption algorithm
and the SHA1 hash algorithm). Other certification authorities may use rsa-pkcs1-md5 (RSA
public-private key encryption algorithm and the MD5 hash algorithm).
This field displays the date that the certificate becomes applicable. The text displays in red
and includes a Not Yet Valid! message if the certificate has not yet become applicable.
This field displays the date that the certificate expires. The text displays in red and includes
an Expiring! or Expired! message if the certificate is about to expire or has already expired.
This field displays the type of algorithm that was used to generate the certificate's key pair
(the Zyxel Device uses RSA encryption) and the length of the key set in bits (1024 bits for
example).
This field displays the certificate's owner's IP address (IP), domain name (DNS) or email
address (EMAIL).
This field displays for what functions the certificate's key can be used. For example,
"DigitalSignature" means that the key can be used to sign certificates and
"KeyEncipherment" means that the key can be used to encrypt text.
This field displays the method that the Zyxel Device generates and stores a request for server
authentication, client authentication, or IKE Intermediate authentication certificate.
This field displays general information about the certificate. For example, Subject Type=CA
means that this is a certification authority's certificate and "Path Length Constraint=1"
means that there can only be one certification authority in the certificate's path.
This is the certificate's message digest that the Zyxel Device calculated using the MD5
algorithm. You can use this value to verify with the certification authority (over the phone for
example) that this is actually their certificate.
This is the certificate's message digest that the Zyxel Device calculated using the SHA1
algorithm. You can use this value to verify with the certification authority (over the phone for
example) that this is actually their certificate.
This read-only text box displays the certificate or certification request in Privacy Enhanced
Mail (PEM) format. PEM uses lowercase letters, uppercase letters and numerals to convert a
binary certificate into a printable form.
You can copy and paste the certificate into an email to send to friends or colleagues or
you can copy and paste the certificate into a text editor and save the file on a
management computer for later distribution (via floppy disk for example).
Click this button and then Save in the File Download screen. The Save As screen opens,
browse to the location that you want to use and click Save.
Click OK to save your changes back to the Zyxel Device. You can only change the name.
Click Cancel to quit and return to the Trusted Certificates screen.
ZyWALL ATP Series User's Guide
667