Chapter 33 Certificates

 

 

 

 

Table 161 Configuration > Object > Certificate > My Certificates > Edit (continued)

 

LABEL

DESCRIPTION

 

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 ZyWALL.

 

 

 

 

Subject

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

 

 

Common Name (CN), Organizational Unit (OU), Organization (O), State (ST), 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.

 

 

“none” displays for a certification request.

 

 

 

 

Signature Algorithm

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

 

 

ZyWALL 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. “none” displays for a

 

 

certification request.

 

 

 

 

Valid To

This field displays the date that the certificate expires. The text displays in red and

 

 

includes an Expired! message if the certificate has expired. “none” displays for a

 

 

certification request.

 

 

 

 

Key Algorithm

This field displays the type of algorithm that was used to generate the certificate’s key

 

 

pair (the ZyWALL uses RSA encryption) and the length of the key set in bits (1024 bits

 

 

for example).

 

 

 

 

Subject Alternative

This field displays the certificate owner‘s IP address (IP), domain name (DNS) or e-mail

 

Name

address (EMAIL).

 

 

 

 

Key Usage

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.

 

 

 

 

Basic Constraint

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 field does not display for a certification request.

 

 

 

 

MD5 Fingerprint

This is the certificate’s message digest that the ZyWALL calculated using the MD5

 

 

algorithm.

 

 

 

 

SHA1 Fingerprint

This is the certificate’s message digest that the ZyWALL calculated using the SHA1

 

 

algorithm.

 

 

 

 

Certificate in PEM

This read-only text box displays the certificate or certification request in Privacy

 

(Base-64) Encoded

Enhanced Mail (PEM) format. PEM uses lowercase letters, uppercase letters and

 

Format

numerals to convert a binary certificate into a printable form.

 

 

You can copy and paste a certification request into a certification authority’s web page,

 

 

an e-mail that you send to the certification authority or a text editor and save the file

 

 

on a management computer for later manual enrollment.

 

 

You can copy and paste a certificate into an e-mail to send to friends or colleagues or

 

 

you can copy and paste a certificate into a text editor and save the file on a

 

 

management computer for later distribution (via floppy disk for example).

 

 

 

 

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ZyWALL 110/310/1100 Series User’s Guide