ZyXEL Communications NWA-3160 Series manual 167

	Chapter 14 Certificates
Table 60 My Certificate Details (continued)
LABEL	DESCRIPTION
Certificate 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	expired or been revoked.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
	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 ZyXEL Device 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)
Name	or 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.
MD5 Fingerprint	This is the certificate’s message digest that the ZyXEL Device calculated using
	the MD5 algorithm.

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ZyXEL NWA-3160 Series User’s Guide