Hi Santhosh,
1) I am not aware about any Enterprise License - Never Expired so my answer would be NO but you can alwasy try to contact our Symantec Customer Care for more information:
Here is the link:
http://www.symantec.com/support/assistance_care.jsp
For India:
Telephone:
000 800 4401 456 IDD call: 29 0782864
Business Hours:
8:30AM-5:30PM Local time
Please be familiar with our PGP Command Line guide as well:
PGP Command Line 10.0.x - 10.1.x User's Guide
http://www.symantec.com/docs/DOC3607
and
HOW TO: License PGP Command Line 10.0
http://www.symantec.com/docs/HOWTO42089
check this thread as well:
https://www-secure.symantec.com/connect/forums/pgp-command-line-102-unix-licensing-multiple-users
PGP Command Line supports the following licensing scenarios:
- Using a License Number (on page 27). This is the normal method to
license PGP Command Line. You must have your license number and a
working connection to the Internet.
- Using a License Authorization (on page 28). This licensing method uses
licensing information in a file that was obtained from PGP Corporation. This
method does not require a working connection to the Internet.
Re-Licensing (on page 29). If you have already licensed PGP Command Line
on a system but want to re-license it with a new license number (to support
additional functionality, for example), use this method. You must have your
new license number and a working connection to the Internet.
- Through a Proxy Server (on page 30). If you connect to the Internet through
a proxy server, use this method to license PGP Command Line. You must
have your license number and the appropriate proxy server information.
2) Please follow below KB article - I hope it helps:
HOW TO: Update an expiration date for a key - PGP Command Line
http://www.symantec.com/docs/HOWTO42027
3) No - After a PGP Command Line subscription license expires, all functionality is immediately disabled. No Encryption/Signing or Decryption/Verifying is performed until a valid license number has been entered into the software.
HTH