Add rsa4096 subdomain. Closes #337.

certs/Makefile

@@ -240,6 +240,17 @@ CHAINS_PROD += $(O)/gen/chain/wildcard-rsa8192.pem
 $(O)/gen/chain/wildcard-rsa8192.pem: $(O)/gen/crt/wildcard-rsa8192.crt $(O)/gen/crt/ca-intermediate.crt
 	./tool chain $@ $(D) $^
 
+################################
+$(O)/gen/key/leaf-rsa4096.key:
+	./tool gen-key $@ $(D) 4096
+$(O)/gen/csr/wildcard-rsa4096.csr: src/conf/wildcard.conf $(O)/gen/key/leaf-rsa4096.key
+	./tool gen-csr $@ $(D) $^
+$(O)/gen/crt/wildcard-rsa4096.crt: src/conf/wildcard.conf $(O)/gen/csr/wildcard-rsa4096.csr $(O)/gen/key/ca-intermediate.key $(O)/gen/crt/ca-intermediate.crt
+	./tool sign $@ $(D) $(SIGN_LEAF_DEFAULTS) $^
+CHAINS_PROD += $(O)/gen/chain/wildcard-rsa4096.pem
+$(O)/gen/chain/wildcard-rsa4096.pem: $(O)/gen/crt/wildcard-rsa4096.crt $(O)/gen/crt/ca-intermediate.crt
+	./tool chain $@ $(D) $^
+
 ################################
 $(O)/gen/key/leaf-ecc256.key:
 	./tool gen-ecckey $@ $(D) prime256v1

certs/sets/prod/pregen/chain/wildcard-rsa4096.pem

@@ -0,0 +1,70 @@
+-----BEGIN CERTIFICATE-----
+MIIElDCCA3ygAwIBAgIQAf2j627KdciIQ4tyS8+8kTANBgkqhkiG9w0BAQsFADBh
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+-----END CERTIFICATE-----
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----

domains/cert/rsa4096.conf

@@ -0,0 +1,19 @@
+---
+---
+server {
+  listen 80;
+  server_name rsa4096.{{ site.domain }};
+
+  return 301 https://$server_name$request_uri;
+}
+
+server {
+  listen 443;
+  server_name rsa4096.{{ site.domain }};
+
+  include {{ site.serving-path }}/nginx-includes/wildcard-rsa4096.conf;
+  include {{ site.serving-path }}/nginx-includes/tls-defaults.conf;
+  include {{ site.serving-path }}/common/common.conf;
+
+  root {{ site.serving-path }}/domains/cert/rsa4096;
+}

domains/cert/rsa4096/index.html

@@ -0,0 +1,16 @@
+---
+subdomain: rsa4096
+layout: page
+favicon: green
+background: green
+---
+
+<div id="content">
+  <h1 style="font-size: 8vw;">
+    {{ page.subdomain }}.{{ site.domain }}
+  </h1>
+</div>
+
+<div id="footer" style="font-size: 2.75vw;">
+  This site uses a 4096-bit RSA key for key exchange.
+</div>

domains/misc/badssl.com/index.html

@@ -55,6 +55,7 @@ <h2 id="certificate"><span class="emoji">🎫</span>Certificate</h2>
     <a href="https://ecc384.{{ site.domain }}/" class="good"><span class="icon"></span>ecc384</a>
     <hr>
     <a href="https://rsa2048.{{ site.domain }}/" class="good"><span class="icon"></span>rsa2048</a>
+    <a href="https://rsa4096.{{ site.domain }}/" class="good"><span class="icon"></span>rsa4096</a> 
     <a href="https://rsa8192.{{ site.domain }}/" class="dubious"><span class="icon"></span>rsa8192</a> 
     <hr>
     <a href="https://extended-validation.{{ site.domain }}/" class="good"><span class="icon"></span>extended-validation</a>

nginx-includes/wildcard-rsa4096.conf

@@ -0,0 +1,6 @@
+---
+---
+
+ssl on;
+ssl_certificate {{ site.cert-path }}/wildcard-rsa4096.pem;
+ssl_certificate_key /etc/keys/leaf-rsa4096.key;