feat: add private ca for all internal web services

certs/.gitignore

@@ -0,0 +1,2 @@
+*.key
+*.csr

certs/README.md

@@ -0,0 +1,7 @@
+# My Private PKI / CA
+
+This is my private Private Key Infrastructure (PKI) / Certificate Authority (CA) for my personal
+use. It is used to issue certificates for my own servers and services.
+
+All the private keys are ignored by git, and will be stored in my private secrets repo
+[../secrets](../secrets/)

certs/ecc-ca.crt

@@ -0,0 +1,10 @@
+-----BEGIN CERTIFICATE-----
+MIIBajCB8QIJAIwL98is2nQPMAoGCCqGSM49BAMEMB8xHTAbBgNVBAMMFFJ5YW40
+WWluJ3MgUm9vdCBDQSAxMB4XDTI0MDQwMzA4NDgzM1oXDTM0MDQwMTA4NDgzM1ow
+HzEdMBsGA1UEAwwUUnlhbjRZaW4ncyBSb290IENBIDEwdjAQBgcqhkjOPQIBBgUr
+gQQAIgNiAAQ6ixMbsGZ/u/ZnwzOZ49naVL7rQxm9C74SboGytKcYBH03JjC7tgZ3
+DylirxSLcTYHHtCz9ajdamP6+sgiGVpUODtfGSO+WmS+gAbLjCS37T41bkUhkx88
+JU4NsGhjPXcwCgYIKoZIzj0EAwQDaAAwZQIwDrGLSdO+p/1uywkzqzdM/OnZs8bp
+n60uBhUI7EZzDmrouOFeGx+dXYI5yy5AD/qDAjEA7fTQx+jccyOj4dimq1iU9+71
+e/gWYg0rexfy/+9dQY6kvwMzv8Lnm6URaRMbE1Q/
+-----END CERTIFICATE-----

certs/ecc-ca.srl

@@ -0,0 +1 @@
+C050420A8E5A3C1E

certs/ecc-csr.conf

@@ -0,0 +1,22 @@
+[ req ]
+prompt = no
+req_extensions = v3_ext
+distinguished_name = req_distinguished_name
+
+[ req_distinguished_name ]
+countryName            = US
+stateOrProvinceName    = NYK
+localityName           = NYK
+organizationName       = Ryan4Yin
+organizationalUnitName = Ryan4Yin
+commonName             = writefor.fun # deprecated, use subjectAltName(SAN) instead
+emailAddress           = rayn4yin@linux.com
+
+[ alt_names ]
+DNS.1 = writefor.fun
+DNS.2 = *.writefor.fun
+
+[ v3_ext ]
+subjectAltName=@alt_names
+basicConstraints       = CA:false
+extendedKeyUsage       = serverAuth

certs/ecc-server.crt

@@ -0,0 +1,14 @@
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----

certs/gen-certs.sh

@@ -0,0 +1,19 @@
+# 1. generate the private key for the CA root certificate
+openssl ecparam -genkey -name secp384r1 -out ecc-ca.key
+# 2. generate the CA root certificate with the private key
+# with the validity period of 10 years
+openssl req -x509 -new -SHA512 -key ecc-ca.key -subj "/CN=Ryan4Yin's Root CA 1" -days 3650 -out ecc-ca.crt
+
+# 3. generate the private key for the server certificate
+openssl ecparam -genkey -name secp384r1 -out ecc-server.key
+# 4. generate the certificate signing request (CSR) for the server certificate
+# using the private key and the configuration file ecc-csr.conf
+openssl req -new -SHA512 -key ecc-server.key -out ecc-server.csr -config ecc-csr.conf
+# 5. sign the server certificate with the CA root certificate
+openssl x509 -req -SHA512 -in ecc-server.csr -CA ecc-ca.crt -CAkey ecc-ca.key \
+  -CAcreateserial -out ecc-server.crt -days 3650 \
+  -extensions v3_ext -extfile ecc-csr.conf
+
+openssl x509 -noout -text -in ecc-ca.crt
+openssl x509 -noout -text -in ecc-server.crt
+

flake.lock

@@ -892,10 +892,10 @@
     "mysecrets": {
       "flake": false,
       "locked": {
-        "lastModified": 1711871709,
+        "lastModified": 1712114794,
-        "narHash": "sha256-Pj667YJdXbJPhQVUutpKoqH6e66eF8my5q8RQyl0BXI=",
+        "narHash": "sha256-qWSnhqYo7o9+ThiH5TV5yPOWSKXCKpwSP+7HjnjBZvY=",
         "ref": "refs/heads/main",
-        "rev": "c0239ed183c43c18f6bdf2f9045602e1bb9ca310",
+        "rev": "066524c12e11687110642005d5d51fec88306573",
         "shallow": true,
         "type": "git",
         "url": "ssh://git@github.com/ryan4yin/nix-secrets.git"

hosts/12kingdoms-rakushun/caddy.nix

@@ -1,4 +1,12 @@
-{myvars, ...}: {
+{config, ...}: let
+  hostCommonConfig = ''
+    encode zstd gzip
+    tls ${../../certs/ecc-server.crt} ${config.age.secrets."certs/ecc-server.key".path} {
+      protocols tls1.3 tls1.3
+      curves x25519 secp384r1 secp521r1
+    }
+  '';
+in {
   services.caddy = {
     enable = true;
     # Reload Caddy instead of restarting it when configuration file changes.
@@ -12,23 +20,19 @@
     globalConfig = ''
       http_port    80
       https_port   443
-      auto_https   off
+      auto_https   disable_certs
     '';
 
-    # ACME related settings.
-    # email = myvars.useremail;
-    # acmeCA = "https://acme-v02.api.letsencrypt.org/directory";
-
     # Dashboard
-    virtualHosts."http://home.writefor.fun".extraConfig = ''
+    virtualHosts."home.writefor.fun".extraConfig = ''
-      encode zstd gzip
+      ${hostCommonConfig}
       reverse_proxy http://localhost:4401
     '';
 
     # https://caddyserver.com/docs/caddyfile/directives/file_server
-    virtualHosts."http://file.writefor.fun".extraConfig = ''
+    virtualHosts."file.writefor.fun".extraConfig = ''
       root * /var/lib/caddy/fileserver/
-      encode zstd gzip
+      ${hostCommonConfig}
       file_server browse {
         hide .git
         precompressed zstd br gzip
@@ -36,42 +40,42 @@
     '';
 
     # Datastore
-    virtualHosts."http://attic.writefor.fun".extraConfig = ''
+    virtualHosts."attic.writefor.fun".extraConfig = ''
       encode zstd gzip
       reverse_proxy http://localhost:3300
     '';
 
-    virtualHosts."http://git.writefor.fun".extraConfig = ''
+    virtualHosts."git.writefor.fun".extraConfig = ''
       encode zstd gzip
       reverse_proxy http://localhost:3301
     '';
-    virtualHosts."http://sftpgo.writefor.fun".extraConfig = ''
+    virtualHosts."sftpgo.writefor.fun".extraConfig = ''
       encode zstd gzip
       reverse_proxy http://localhost:3302
     '';
-    virtualHosts."http://webdav.writefor.fun".extraConfig = ''
+    virtualHosts."webdav.writefor.fun".extraConfig = ''
       encode zstd gzip
       reverse_proxy http://localhost:3303
     '';
-    virtualHosts."http://transmission.writefor.fun".extraConfig = ''
+    virtualHosts."transmission.writefor.fun".extraConfig = ''
       encode zstd gzip
       reverse_proxy http://localhost:9091
     '';
 
     # Monitoring
-    virtualHosts."http://uptime-kuma.writefor.fun".extraConfig = ''
+    virtualHosts."uptime-kuma.writefor.fun".extraConfig = ''
       encode zstd gzip
       reverse_proxy http://localhost:3350
     '';
-    virtualHosts."http://grafana.writefor.fun".extraConfig = ''
+    virtualHosts."grafana.writefor.fun".extraConfig = ''
       encode zstd gzip
       reverse_proxy http://localhost:3351
     '';
-    virtualHosts."http://prometheus.writefor.fun".extraConfig = ''
+    virtualHosts."prometheus.writefor.fun".extraConfig = ''
       encode zstd gzip
       reverse_proxy http://localhost:9090
     '';
-    virtualHosts."http://alertmanager.writefor.fun".extraConfig = ''
+    virtualHosts."alertmanager.writefor.fun".extraConfig = ''
       encode zstd gzip
       reverse_proxy http://localhost:9093
     '';

modules/base.nix

@@ -10,6 +10,11 @@
     ]
     ++ (import ../overlays args);
 
+  # Add my private PKI's CA certificate to the system-wide trust store.
+  security.pki.certificateFiles = [
+    ../certs/ecc-ca.crt
+  ];
+
   environment.systemPackages = with pkgs; [
     git # used by nix flakes
     git-lfs # used by huggingface models

outputs/aarch64-linux/src/12kingdoms-rakushun.nix

@@ -26,6 +26,7 @@
       ++ [
         {modules.secrets.server.application.enable = true;}
         {modules.secrets.server.operation.enable = true;}
+        {modules.secrets.server.webserver.enable = true;}
       ];
     home-modules = map mylib.relativeToRoot [
       "home/linux/tui.nix"

secrets/nixos.nix

@@ -34,6 +34,7 @@ in {
     server.application.enable = mkEnableOption "NixOS Secrets for Application Servers";
     server.operation.enable = mkEnableOption "NixOS Secrets for Operation Servers(Backup, Monitoring, etc)";
     server.kubernetes.enable = mkEnableOption "NixOS Secrets for Kubernetes";
+    server.webserver.enable = mkEnableOption "NixOS Secrets for Web Servers(contains tls cert keys)";
 
     impermanence.enable = mkEnableOption "whether use impermanence and ephemeral root file system";
   };
@@ -244,5 +245,15 @@ in {
             // high_security;
         };
       })
+
+      (mkIf cfg.server.webserver.enable {
+        age.secrets = {
+          "certs/ecc-server.key" = {
+            file = "${mysecrets}/certs/ecc-server.key.age";
+            mode = "0400";
+            owner = "caddy"; # used by caddy only
+          };
+        };
+      })
     ]);
 }