hosts: enable secureboot and tpm luks unlocking (#99)

* flake: add secureboot

* petalburg: enable lanzaboote

* lavaridge: enable lanzaboote

* flake: auto import lanzaboote

* mauville: enable secureboot and auto luks unlocking

* lavaridge,petalburg: disable autologin

* README.md: add lanzaboote

* hosts/README.md: add secure boot setup docs

README.md

@@ -9,9 +9,8 @@ My comprehensive NixOS flake for managing my laptop, desktop, and home lab envir
 
 - **Hyprland:** Dynamic tiling Wayland compositor and window manager.
 - **Stylix:** Auto-gnerated base16 themes for the whole desktop.
-- **Home Lab Services:** Media, file sharing, and more.
+- **Encryption:** Encrypted boot drives with Secure Boot and LUKS with TPM decryption.
-- **Reverse Proxy:** Efficient traffic routing for my home lab services.
+- **Home Lab:** Media, file sharing, and more with a efficnet routing via reverse proxy.
-- **Modular Configuration:** Reasonably adaptable for different hardware and use cases.
 
 ## Inputs
 
@@ -27,6 +26,7 @@ As well as upstream third-party projects that I use for various tasks:
 - [home-manager](https://github.com/nix-community/home-manager): declarative dotfile and user package management.
 - [hyprland](https://github.com/hyprwm/Hyprland): great dynamic tiling wayland compositor.
 - [iio-hyprland](https://github.com/JeanSchoeller/iio-hyprland): autorotate daemon for Hyprland.
+- [lanzaboote](https://github.com/nix-community/lanzaboote): ssecure boot for NixOS.
 - [nur](https://github.com/nix-community/NUR): extra packages from the nix user repository.
 - [stylix](https://github.com/danth/stylix): system-wide colorscheming and typography.
 - [sway](https://github.com/swaywm/sway): fantastic, rock-solid tiling compositor for wayland.

flake.lock

@@ -137,6 +137,27 @@
         "type": "github"
       }
     },
+    "crane": {
+      "inputs": {
+        "nixpkgs": [
+          "lanzaboote",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1717535930,
+        "narHash": "sha256-1hZ/txnbd/RmiBPNUs7i8UQw2N89uAK3UzrGAWdnFfU=",
+        "owner": "ipetkov",
+        "repo": "crane",
+        "rev": "55e7754ec31dac78980c8be45f8a28e80e370946",
+        "type": "github"
+      },
+      "original": {
+        "owner": "ipetkov",
+        "repo": "crane",
+        "type": "github"
+      }
+    },
     "darwin": {
       "inputs": {
         "nixpkgs": [
@@ -180,6 +201,22 @@
       }
     },
     "flake-compat": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1696426674,
+        "narHash": "sha256-kvjfFW7WAETZlt09AgDn1MrtKzP7t90Vf7vypd3OL1U=",
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "rev": "0f9255e01c2351cc7d116c072cb317785dd33b33",
+        "type": "github"
+      },
+      "original": {
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "type": "github"
+      }
+    },
+    "flake-compat_2": {
       "flake": false,
       "locked": {
         "lastModified": 1673956053,
@@ -195,6 +232,45 @@
         "type": "github"
       }
     },
+    "flake-parts": {
+      "inputs": {
+        "nixpkgs-lib": [
+          "lanzaboote",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1717285511,
+        "narHash": "sha256-iKzJcpdXih14qYVcZ9QC9XuZYnPc6T8YImb6dX166kw=",
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "rev": "2a55567fcf15b1b1c7ed712a2c6fadaec7412ea8",
+        "type": "github"
+      },
+      "original": {
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "type": "github"
+      }
+    },
+    "flake-utils": {
+      "inputs": {
+        "systems": "systems_3"
+      },
+      "locked": {
+        "lastModified": 1710146030,
+        "narHash": "sha256-SZ5L6eA7HJ/nmkzGG7/ISclqe6oZdOZTNoesiInkXPQ=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "b1d9ab70662946ef0850d488da1c9019f3a9752a",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
     "fromYaml": {
       "flake": false,
       "locked": {
@@ -211,6 +287,28 @@
         "type": "github"
       }
     },
+    "gitignore": {
+      "inputs": {
+        "nixpkgs": [
+          "lanzaboote",
+          "pre-commit-hooks-nix",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1709087332,
+        "narHash": "sha256-HG2cCnktfHsKV0s4XW83gU3F57gaTljL9KNSuG6bnQs=",
+        "owner": "hercules-ci",
+        "repo": "gitignore.nix",
+        "rev": "637db329424fd7e46cf4185293b9cc8c88c95394",
+        "type": "github"
+      },
+      "original": {
+        "owner": "hercules-ci",
+        "repo": "gitignore.nix",
+        "type": "github"
+      }
+    },
     "gnome-shell": {
       "flake": false,
       "locked": {
@@ -312,6 +410,33 @@
         "type": "github"
       }
     },
+    "lanzaboote": {
+      "inputs": {
+        "crane": "crane",
+        "flake-compat": "flake-compat",
+        "flake-parts": "flake-parts",
+        "flake-utils": "flake-utils",
+        "nixpkgs": [
+          "nixpkgs"
+        ],
+        "pre-commit-hooks-nix": "pre-commit-hooks-nix",
+        "rust-overlay": "rust-overlay"
+      },
+      "locked": {
+        "lastModified": 1718178907,
+        "narHash": "sha256-eSZyrQ9uoPB9iPQ8Y5H7gAmAgAvCw3InStmU3oEjqsE=",
+        "owner": "nix-community",
+        "repo": "lanzaboote",
+        "rev": "b627ccd97d0159214cee5c7db1412b75e4be6086",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "ref": "v0.4.1",
+        "repo": "lanzaboote",
+        "type": "github"
+      }
+    },
     "nixhw": {
       "inputs": {
         "nixpkgs": [
@@ -348,6 +473,22 @@
         "type": "github"
       }
     },
+    "nixpkgs-stable": {
+      "locked": {
+        "lastModified": 1710695816,
+        "narHash": "sha256-3Eh7fhEID17pv9ZxrPwCLfqXnYP006RKzSs0JptsN84=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "614b4613980a522ba49f0d194531beddbb7220d3",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-23.11",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
     "nixpkgs-unstable": {
       "locked": {
         "lastModified": 1723637854,
@@ -379,6 +520,33 @@
         "type": "github"
       }
     },
+    "pre-commit-hooks-nix": {
+      "inputs": {
+        "flake-compat": [
+          "lanzaboote",
+          "flake-compat"
+        ],
+        "gitignore": "gitignore",
+        "nixpkgs": [
+          "lanzaboote",
+          "nixpkgs"
+        ],
+        "nixpkgs-stable": "nixpkgs-stable"
+      },
+      "locked": {
+        "lastModified": 1717664902,
+        "narHash": "sha256-7XfBuLULizXjXfBYy/VV+SpYMHreNRHk9nKMsm1bgb4=",
+        "owner": "cachix",
+        "repo": "pre-commit-hooks.nix",
+        "rev": "cc4d466cb1254af050ff7bdf47f6d404a7c646d1",
+        "type": "github"
+      },
+      "original": {
+        "owner": "cachix",
+        "repo": "pre-commit-hooks.nix",
+        "type": "github"
+      }
+    },
     "raffauflabs": {
       "inputs": {
         "nixpkgs": [
@@ -405,6 +573,7 @@
         "disko": "disko",
         "home-manager": "home-manager_2",
         "iio-hyprland": "iio-hyprland",
+        "lanzaboote": "lanzaboote",
         "nixhw": "nixhw",
         "nixpkgs": "nixpkgs",
         "nixpkgs-unstable": "nixpkgs-unstable",
@@ -413,6 +582,31 @@
         "stylix": "stylix"
       }
     },
+    "rust-overlay": {
+      "inputs": {
+        "flake-utils": [
+          "lanzaboote",
+          "flake-utils"
+        ],
+        "nixpkgs": [
+          "lanzaboote",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1717813066,
+        "narHash": "sha256-wqbRwq3i7g5EHIui0bIi84mdqZ/It1AXBSLJ5tafD28=",
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "rev": "6dc3e45fe4aee36efeed24d64fc68b1f989d5465",
+        "type": "github"
+      },
+      "original": {
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "type": "github"
+      }
+    },
     "stylix": {
       "inputs": {
         "base16": "base16",
@@ -422,7 +616,7 @@
         "base16-kitty": "base16-kitty",
         "base16-tmux": "base16-tmux",
         "base16-vim": "base16-vim",
-        "flake-compat": "flake-compat",
+        "flake-compat": "flake-compat_2",
         "gnome-shell": "gnome-shell",
         "home-manager": "home-manager_3",
         "nixpkgs": [
@@ -472,6 +666,21 @@
         "repo": "default-linux",
         "type": "github"
       }
+    },
+    "systems_3": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
     }
   },
   "root": "root",

flake.nix

@@ -25,6 +25,11 @@
       url = "github:JeanSchoeller/iio-hyprland";
     };
 
+    lanzaboote = {
+      url = "github:nix-community/lanzaboote/v0.4.1";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+
     nixhw = {
       inputs.nixpkgs.follows = "nixpkgs";
       url = "github:alyraffauf/nixhw";
@@ -120,6 +125,7 @@
             self.inputs.agenix.nixosModules.default
             self.inputs.disko.nixosModules.disko
             self.inputs.home-manager.nixosModules.home-manager
+            self.inputs.lanzaboote.nixosModules.lanzaboote
             self.inputs.stylix.nixosModules.stylix
             self.nixosModules.nixos
             self.nixosModules.users

hosts/README.md

@@ -43,3 +43,56 @@ In short,
 1. Add the new public key to `secrets/secrets.nix`, rekey all secrets with `agenix --rekey`, and push your changes to master.
 1. Rebuild the new system from git. Secrets will be automatically decrypted and immediately available in `/run/agenix/` for NixOS and `$XDG_RUNTIME_DIR/agenix/` for users.
 1. (OPTIONAL) Generate a new user SSH key and add it to `nixosModules/users/default.nix` in order to enable passwordless logins to other hosts.
+
+## Secure Boot
+
+1. Generate secure boot keys:
+
+   ```bash
+   sudo nix run nixpkgs#sbctl create-keys
+   ```
+
+1. Enable lanzaboote in NixOS host configuration:
+
+   ```nix
+   boot = {
+     initrd.systemd.enable = true; # For automatic decryption with TPM.
+     loader.systemd-boot.enable = lib.mkForce false; # Interferes with lanzaboote and must be force-disabled.
+
+     lanzaboote = {
+       enable = true;
+       pkiBundle = "/etc/secureboot";
+     };
+   };
+   ```
+
+1. In UEFI, set secure boot to "setup mode" or erase platform keys.
+
+1. Enroll your secure boot keys:
+
+   ```bash
+   sudo nix run nixpkgs#sbctl -- enroll-keys --microsoft
+   ```
+
+1. Reboot,  make sure secure boot is enabled in UEFI.
+
+1. Check secure boot status with `bootctl status`:
+
+   ```bash
+   System:
+         Firmware: UEFI 2.70 (American Megatrends 5.17)
+   Firmware Arch: x64
+     Secure Boot: enabled (user)
+     TPM2 Support: yes
+     Measured UKI: yes
+     Boot into FW: supported
+   ```
+
+1. If your root drive is encrypted with LUKS, you can have the TPM automatically decrypt it on boot:
+
+   ```bash
+   sudo systemd-cryptenroll --tpm2-device=auto --tpm2-pcrs=0+2+7+12 --wipe-slot=tpm2 /dev/nvme0n1p2
+   ```
+
+   Replace `/dev/nvme0n1p2` with your root partition.
+   Check the [Linux TPM PCR Registry](https://uapi-group.org/specifications/specs/linux_tpm_pcr_registry/) for more details.

hosts/lavaridge/default.nix

@@ -24,11 +24,17 @@
   ];
 
   boot = {
+    initrd.systemd.enable = true;
     kernelPackages = lib.mkForce pkgs.linuxPackages_6_9;
 
+    lanzaboote = {
+      enable = true;
+      pkiBundle = "/etc/secureboot";
+    };
+
     loader = {
       efi.canTouchEfiVariables = true;
-      systemd-boot.enable = true;
+      systemd-boot.enable = lib.mkForce false;
     };
   };
 
@@ -45,11 +51,7 @@
     };
 
     desktop = {
-      greetd = {
+      greetd.enable = true;
-        enable = true;
-        autologin = "aly";
-      };
-
       hyprland.enable = true;
       sway.enable = true;
     };

hosts/mauville/default.nix

@@ -33,28 +33,17 @@ in {
   boot = {
     initrd = {
       availableKernelModules = ["xhci_pci" "ahci" "nvme" "usbhid" "sd_mod" "r8169"];
+      systemd.enable = true;
+    };
 
-      network = {
+    lanzaboote = {
-        enable = true;
+      enable = true;
-        flushBeforeStage2 = true;
+      pkiBundle = "/etc/secureboot";
-
-        ssh = {
-          enable = true;
-          hostKeys = [/etc/secrets/initrd/ssh_host_ed25519_key];
-        };
-
-        udhcpc.enable = true;
-
-        postCommands = ''
-          # Automatically ask for the password on SSH login
-          echo 'cryptsetup-askpass || echo "Unlock was successful; exiting SSH session" && exit 1' >> /root/.profile
-        '';
-      };
     };
 
     loader = {
       efi.canTouchEfiVariables = true;
-      systemd-boot.enable = true;
+      systemd-boot.enable = lib.mkForce false;
     };
   };
 

hosts/petalburg/default.nix

@@ -1,6 +1,7 @@
 # Lenovo Yoga 9i Convertible with Intel Core i7-1360P, 16GB RAM, 512GB SSD.
 {
   config,
+  lib,
   self,
   ...
 }: {
@@ -22,11 +23,17 @@
   ];
 
   boot = {
+    initrd.systemd.enable = true;
     extraModulePackages = with config.boot.kernelPackages; [acpi_call];
 
+    lanzaboote = {
+      enable = true;
+      pkiBundle = "/etc/secureboot";
+    };
+
     loader = {
       efi.canTouchEfiVariables = true;
-      systemd-boot.enable = true;
+      systemd-boot.enable = lib.mkForce false;
     };
   };
 
@@ -65,11 +72,7 @@
     };
 
     desktop = {
-      greetd = {
+      greetd.enable = true;
-        enable = true;
-        autologin = "aly";
-      };
-
       hyprland.enable = true;
       sway.enable = true;
     };