diff --git a/csclub.der b/csclub.der
new file mode 100644
index 0000000..27bb7fa
Binary files /dev/null and b/csclub.der differ
diff --git a/csclub.pem b/csclub.pem
new file mode 100644
index 0000000..7c7c543
--- /dev/null
+++ b/csclub.pem
@@ -0,0 +1,30 @@
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
diff --git a/xsl/common.xsl b/xsl/common.xsl
index e1e7792..b5bb4e7 100644
--- a/xsl/common.xsl
+++ b/xsl/common.xsl
@@ -74,6 +74,11 @@
     experience any problems, please report them, along with the version of
     your browser and operating system, to the 
     <a href="mailto:www@csclub.uwaterloo.ca">Webmaster</a>.
+    <br /><br />
+    This site supports TLS/SSL using a certificate signed by the 
+    "CSC Certificate Authority". Click <a href="{$pre}csclub.pem">here</a>
+    (PEM format) or <a href="{$pre}csclub.der">here</a> (DER format) to
+    install the certificate authority into your browser.
   </p>
   <p>
     <a href="http://validator.w3.org/check?uri=referer">