ZyXEL Communications P-660HN-F1A, User Manual

Page: 233 / 430

Chapter 13 Certificates
P-660HN-F1A User’s Guide
233
Version This field displays the X.509 version number.
Serial Number This field displays the certificate’s identification number given by the
certification authority.
Signature
Algorithm 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).
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 P-660HN-F1A uses RSA encryption) and the
length of the key set in bits (1024 bits for example).
MD5 Fingerprint This is the certificate’s message digest that the P-660HN-F1A
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.
SHA1 Fingerprint This is the certificate’s message digest that the P-660HN-F1A
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.
Certificate in PEM
(Base-64)
Encoded Format This read-only text box displays the certificate or certification request
in Privacy Enhanced Mail (PEM) format. PEM uses 64 ASCII characters
to convert the binary certificate into a printable form.
You can copy and paste the certificate into an e-mail 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).
Back Click this to return to the previous screen without saving.
Export Click this 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.
Apply Click this to save your changes. You can only change the name and/or
set whether or not you want the P-660HN-F1A to check the CRL that
the certification authority issues before trusting a certificate issued by
the certification authority.
Cancel Click this to restore your previously saved settings.
Table 68 Trusted CA Details (continued)
LABEL DESCRIPTION