ZyWALL 2 Series User’s Guide

 

 

Table 15-4 My Certificate Details

 

 

 

 

 

LABEL

DESCRIPTION

 

 

 

 

 

 

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 ras-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 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

 

 

Name

e-mail 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.

 

 

 

 

 

 

CRL Distribution

This field displays how many directory servers with lists of revoked certificates the

 

 

Points

issuing certification authority of this certificate makes available. This field also

 

 

 

displays the domain names or IP addresses of the servers.

 

 

 

 

 

 

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.

 

Certificates

15-13