Chapter 19 Certificates

The following table describes the labels in this screen.

Table 106 My Certificate Details

LABEL

DESCRIPTION

Name

This field displays the identifying name of this certificate. If you want to change

 

the name, type up to 31 characters to identify this certificate. You may use any

 

character (not including spaces).

 

 

Property

Select this check box to have the ZyXEL Device use this certificate to sign the

Default self-signed

trusted remote host certificates that you import to the ZyXEL Device. This check

certificate which

box is only available with self-signed certificates.

signs the imported

If this check box is already selected, you cannot clear it in this screen, you must

remote host

select this check box in another self-signed certificate’s details screen. This

certificates.

automatically clears the check box in the details screen of the certificate that

 

was previously set to sign the imported trusted remote host certificates.

 

 

Certification Path

Click the Refresh button to have this read-only text box display the hierarchy of

 

certification authorities that validate the certificate (and the certificate itself).

 

If the issuing certification authority is one that you have imported as a trusted

 

certification authority, it may be the only certification authority in the list (along

 

with the certificate itself). If the certificate is a self-signed certificate, the

 

certificate itself is the only one in the list. The ZyXEL Device does not trust the

 

certificate and displays “Not trusted” in this field if any certificate on the path has

 

expired or been revoked.

 

 

Refresh

Click Refresh to display the certification path.

 

 

Certificate

These read-only fields display detailed information about the certificate.

Information

 

 

 

Type

This field displays general information about the certificate. CA-signed means

 

that a Certification Authority signed the certificate. Self-signed means that the

 

certificate’s owner signed the certificate (not a certification authority). “X.509”

 

means that this certificate was created and signed according to the ITU-T X.509

 

recommendation that defines the formats for public-key certificates.

 

 

Version

This field displays the X.509 version number.

 

 

Serial Number

This field displays the certificate’s identification number given by the certification

 

authority or generated by the ZyXEL Device.

 

 

Subject

This field displays information that identifies the owner of the certificate, such as

 

Common Name (CN), Organizational Unit (OU), Organization (O) and Country

 

(C).

 

 

Issuer

This field displays identifying information about the certificate’s issuing

 

certification authority, such as Common Name, Organizational Unit,

 

Organization and Country.

 

With self-signed certificates, this is the same as the Subject Name field.

 

 

Signature Algorithm

This field displays the type of algorithm that was used to sign the certificate. The

 

ZyXEL Device uses rsa-pkcs1-sha1 (RSA public-private key encryption

 

algorithm and the SHA1 hash algorithm). Some certification authorities may use

 

rsa-pkcs1-md5 (RSA public-private key encryption algorithm and the MD5 hash

 

algorithm).

 

 

Valid From

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.

 

 

Valid To

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.

 

 

Key Algorithm

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).

 

 

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P-2602H(W)(L)-DxA User’s Guide