add new contact page

... to make it easier to find place to report security issues.

content/pages/en/contact.rst

@@ -8,7 +8,6 @@ Contact
 
 
 * For software support please see `support section <support/>`_.
-* To report security issues please e-mail us and encrypt the message using keys below.
 
 Email
 =====
@@ -17,13 +16,18 @@ Email
 
 .. _knot-resolver@labs.nic.cz: mailto:knot-resolver@labs.nic.cz
 
-GPG keys for secure communication
----------------------------------
 
-- `4A8BA48C2AED933BD495C509A1FBA5F7EF8C4869.asc
-  <https://keys.openpgp.org/vks/v1/by-fingerprint/4A8BA48C2AED933BD495C509A1FBA5F7EF8C4869>`__
-- `B6006460B60A80E782062449E747DF1F9575A3AA.asc
-  <https://keys.openpgp.org/vks/v1/by-fingerprint/B6006460B60A80E782062449E747DF1F9575A3AA>`__
+Reporting Security Issues
+=========================
+
+* When reporting sensitive security issues that require encryption, please use
+  both of the following addresses and their associated PGP keys.
+* Our PGP keyring: https://secure.nic.cz/files/knot-resolver/kresd-keyblock.asc
+* `vladimir.cunat@nic.cz`_
+* `tomas.krizek@nic.cz`_
+
+.. _vladimir.cunat@nic.cz: mailto:vladimir.cunat@nic.cz
+.. _tomas.krizek@nic.cz: mailto:tomas.krizek@nic.cz
 
 Address
 =======