Figure 3. Download Keys Link
When you click on "Download Keys", another window will pop up with the key information and brief instructions (Figure 4). The key is everything between
-----BEGIN PGP PUBLIC KEY BLOCK----
----END PGP PUBLIC KEY BLOCK----
You will need to save the key information to a file either by cutting and pasting, or by selecting "File/Save" from the browser top menu. Be sure to save it as a text file.
Figure 4. CLASS Keys and Instructions.
After you have saved the key to a file, you may use any OpenPGP compliant tool to verify data you receive from CLASS. For example, if you saved the key to a file called CLASSKEYS, and you want to use GNU Privacy Guard (http://www.gnupg.org), you do the following:
|Add the key to your key collection:
||gpg --import CLASSKEYS
|To verify a file called DATA_FILE_1:
||gpg --verify DATA_FILE_1
CLASS keys may expire from time to time. If you receive an expired key error message from your OpenPGP compliant tool, you may need to download a new key from CLASS.