Use sops for secrets

Since I currently do not have access to sayuri, sayuri’s migration is
not done yet. The host keys and wg-home-private-key secret still have to
be added.

.gitattributes

@@ -3,3 +3,4 @@
 *.svg filter=lfs diff=lfs merge=lfs -text
 
 **/secrets/** filter=git-crypt diff=git-crypt
+**/secrets.yaml diff=sops

.sops.yaml

@@ -0,0 +1,28 @@
+keys:
+  - &simon 47E7559E037A35652DBBF8AA8D3C82F9F309F8EC
+  - &fuuko 2372651C56E22972C2D9F3F569C8187C9C43754E
+  - &nunotaba 8C5091AEA213FB0642BD46F943EE19743FAC1D5C
+  - &vueko BB046D773F54739757553A053CB9B8EFD7FED749
+creation_rules:
+  - path_regex: machines/nunotaba/secrets\.yaml$
+    key_groups:
+    - pgp:
+      - *simon
+      - *nunotaba
+  - path_regex: machines/vueko/secrets\.yaml$
+    key_groups:
+    - pgp:
+      - *simon
+      - *vueko
+  - path_regex: machines/fuuko/secrets\.yaml$
+    key_groups:
+    - pgp:
+      - *simon
+      - *fuuko
+  - path_regex: secrets\.yaml$
+    key_groups:
+    - pgp:
+      - *simon
+      - *nunotaba
+      - *vueko
+      - *fuuko

README.md

@@ -23,9 +23,7 @@
  * `users/simon`: [home-manager](https://github.com/nix-community/home-manager)
    configuration
 
-Secrets are managed with krops’s integrated support for
-[`pass`](https://www.passwordstore.org/). Permission management for them is
-implemented in `modules/secrets.nix`.
+Secrets are managed with [sops-nix](https://github.com/Mic92/sops-nix).
 
 ## How to install
 

deploy.nix

@@ -8,7 +8,6 @@ let
   kropsDeploy =
     { hostname
     , target ? null
-    , secrets ? true
     , extraSources ? { }
     }:
     let
@@ -46,12 +45,6 @@ let
           };
           nixos-config.symlink = "config/machines/${hostname}/configuration.nix";
         }
-        (lib.mkIf secrets {
-          secrets.pass = {
-            dir = toString ~/.password-store;
-            name = "nixos/machines/${hostname}";
-          };
-        })
         extraSources
       ];
     in

keys/machines/fuuko.asc

@@ -0,0 +1,28 @@
+-----BEGIN PGP PUBLIC KEY BLOCK-----
+
+xsFNBAAAAAABEACkl9IfFWt7bGRtnJmDsv3sfotEQZusmFA6d9+Lh3J3Z5Ekx1Yz
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+N7RsQdc2NwPnMMMH4mTAvg==
+=9jYa
+-----END PGP PUBLIC KEY BLOCK-----

keys/machines/nunotaba.asc

@@ -0,0 +1,28 @@
+-----BEGIN PGP PUBLIC KEY BLOCK-----
+
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+x2KNnq/P36Mpcv6X7j4U4Q==
+=5d0j
+-----END PGP PUBLIC KEY BLOCK-----

keys/machines/vueko.asc

@@ -0,0 +1,28 @@
+-----BEGIN PGP PUBLIC KEY BLOCK-----
+
+xsFNBAAAAAABEADQYi6d6/laFq0OQWLZYL/48/SF1gnej22Ob+Cy0Tm0d2w9lU95
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+benF3GpcdU5XwmnJZ3XrCA==
+=4Idg
+-----END PGP PUBLIC KEY BLOCK-----

keys/users/simon.asc

@@ -0,0 +1,52 @@
+-----BEGIN PGP PUBLIC KEY BLOCK-----
+
+mQINBF/lCz0BEADKOij3IA1IIiZc9c8rgxTUtrn4W1R8ncgsnFuXIDGD35dBB9e0
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+=7eg7
+-----END PGP PUBLIC KEY BLOCK-----

machines/fuuko/configuration.nix

@@ -50,7 +50,7 @@
     };
   };
   networking.firewall.allowedTCPPorts = [ 80 443 ];
-  users.users.nginx.extraGroups = [ "keys" ];
+  systemd.services.nginx.serviceConfig.SupplementaryGroups = lib.singleton "keys";
 
   services.postgresqlBackup = {
     enable = true;

machines/fuuko/hardware-configuration.nix

@@ -47,15 +47,9 @@
     loader.grub.device = "/dev/disk/by-id/ata-CT240BX500SSD1_2045E4C67C52";
   };
 
-  krops.secrets.luks-data = { };
-
-  environment.etc.crypttab.text =
-    let
-      keyfile = config.krops.secrets.luks-data.source; # path is not yet available
-    in
-    ''
-      data0 UUID=aa692e73-2b75-4239-8a87-5f5b69ea56c5 ${keyfile} luks
-      data1 UUID=1f4120b6-a3a0-4973-8c4c-a4d6703eea2a ${keyfile} luks
+  environment.etc.crypttab.text = ''
+    data0 UUID=aa692e73-2b75-4239-8a87-5f5b69ea56c5 /root/luks-data luks
+    data1 UUID=1f4120b6-a3a0-4973-8c4c-a4d6703eea2a /root/luks-data luks
   '';
 
   fileSystems = {

machines/fuuko/secrets.yaml

@@ -0,0 +1,60 @@
+drone-rpc-environment: ENC[AES256_GCM,data:2Alck43ZrOFzhY7fKonIyboROD5qGuKkalTXlUZM0vBYTNeFLblU4u4tIIaA4t9nNO4=,iv:EakQQ/8pVZlIzM9PbNB0EGzSW46t/dWbxOtQo6uVAhs=,tag:NEhSgzkx8AxIjqtGetGG9w==,type:str]
+drone-server-environment: ENC[AES256_GCM,data:73uDSq+u3nGiKhLqdhdegTIvec9mF9jxVLJLtCjer5jUiFEZu5PkeYv0AWAyLWbB7s8b0V+4fxNQo/QsAfBWH0eP2TVOAy1TAo/sOso9PEVRaQCdilw39UJBdT8II3dy9YIfGFUXRUXCMU+1xfzUFjhU0s7sc+mYQ4jEj2ZX90UbUDcbgppNjC7KIHo8mQdrxFHeMq+wQpaoncwFMlwwzn8lFlG75+dMnkPGYa4xSqkwjHn2tewLM8f9dCiBQVoMVQCWo+1RieMq2cd3CYEkP7MPl+y3OA==,iv:kggBBXdN01LJ82azzxOZap1lfWglshCjkKqaU+oi+T4=,tag:Zg0Ay2aLGok4fgX3/y4ILA==,type:str]
+gitea-mail: ENC[AES256_GCM,data:ck4S9YJ1BLUb6+mOrRmg22KWI1xQwsdIw1dowNk1OOk=,iv:+aQiTSGzmBOLYbIVgwH/SIhslKgdJKoL1ZaGAXCeqHY=,tag:H3vCEGMktqAV/9BASVR5tg==,type:str]
+prometheus-htpasswd: ENC[AES256_GCM,data:eJOWrcTC3YISJJLuQV6sxzD0r8Gr8uoUt48D9sSEHhsbNUUy3pDgIPqJHrkG0ek2sIF6NvpWdDGK1kFcduRAL9h7nLxQLOtf7dxsdObGlPH5nwe6CwdR+1wTE/2WzrsmTGnUrMjMiBgLPV2yRiQg3VJ7W1Me8tHPYHrqYhM=,iv:WvgwIoIfxc3vyjF+znyUzOElv+sd/thoYpxWVaIavx0=,tag:9FnRw7ol++1PCbl1c2IyoA==,type:str]
+restic-password: ENC[AES256_GCM,data:IVFXmuzzvvqDS0T3P0R5ZMIn2wdkbE1AqwDMkWqMpDdCOVMP4/HhP4jF+tEarq22,iv:Eu6Wspzm0rPl0CuSoYTTLz+MmaEtmwCD57nH2JTBuaA=,tag:tKqt5Z7nF7lLcSsDKS4E3A==,type:str]
+restic-s3: ENC[AES256_GCM,data:VJ/jgYnUSkbsNMb1ciLiCcRVEpuaznsSFf0QkEnPhTRHpFv4Nt0f8ARnNtG5j3iXSIT4+H2+5HWKXEsjhvL85p0XE3xe4h45xGKnvvVO2obF+b/zsMDdceFJtLbcq+APzPBjchYU,iv:W+80GhAvYD/52dNZsNYiEhiLo4dhO8oxkd+GAbk42NU=,tag:Kj9CaGo/xAmYxdoLE/Lo1Q==,type:str]
+synapse-registration-shared-secret: ENC[AES256_GCM,data:lNzK/7QAk4Scv+lNM8bTTKvowI139c4R4Y7Qpq60n8R61aahlxrnWc/PUEOv85Pdx+8IdBOLnV0kp7OQF6tStGBBCOkAicYmnsLoR36DmuDCvTSKVArryV7BrxL8pv0=,iv:ZT9IIF7W0NHqvnU3lPQclVS5uXXK5HIQUzXNYwYFMIo=,tag:a/sUixOlHEvn5ZOINPwQlg==,type:str]
+synapse-turn-shared-secret: ENC[AES256_GCM,data:I5QbouvLvBpjroux5TTi8gIAHeyNb5KXV1g9sbTdqjD4YoMaedHSiC53h+ZMmqNCKor64e6iP58Y6SbMaTfFaEl0CyK2GqfcSBrlHxKj0GSWaopO5kLS,iv:qsfHxHykY+oZOaMGw5Tvq8a6zBUDxH3B5q8QKdT1oSk=,tag:75OOrVtztDsLYeTglKPYCQ==,type:str]
+wg-aria-private-key: ENC[AES256_GCM,data:qbxpfNRocrXDbUJ3MwR5WMXX8LB4Vnv9HMXN403ANaBbCLrRTEL9hy93roY=,iv:l2DYXGY1wN1rP2bG/s9uSwRhbvCUm2T6IJy5LKzguqk=,tag:51S+m1P1EtHk1QWEjdUCUA==,type:str]
+wg-home-private-key: ENC[AES256_GCM,data:6l3CgB4qCsPuyYOWuwU2vNiEeC0D1wl6yZvXGGYVsZfYvdPjRz8j5yV7ekQ=,iv:slB/qr+cxi8r7cnTuZAd8CuzWVnvp24Li6A/AnZaFzo=,tag:ynh1Z2+IELAJcgBbHwFC0A==,type:str]
+sops:
+    kms: []
+    gcp_kms: []
+    azure_kv: []
+    hc_vault: []
+    lastmodified: '2021-04-06T11:40:14Z'
+    mac: ENC[AES256_GCM,data:k9GRiDmXoKFN96NMGHt0rjAMklKIsnFUgWRP7iUQeA5j0uG4lo92KzJCMsHCIicDdF+NnNmEigeXE1eI7iet8K+rAh9x1wO8CiO/5ITsNeCzJO/PsfVxZHL1h9dqirjMkqGvKA//2nocEGv9uT/k6xezriDktBkDbLBIWg3Jfek=,iv:T5mO4IuPqO7jRRhQm2LMoW51D659SL4zVXBHbdt0Qgg=,tag:ahtBYe/18kHpGWHtqeKlAA==,type:str]
+    pgp:
+    -   created_at: '2021-04-06T11:27:21Z'
+        enc: |
+            -----BEGIN PGP MESSAGE-----
+
+            hQIMAwDgSONkM+d4AQ/+KSo1N4aEuIAF2JMX+3RborUdEMIJNqIQsBYejPF4o5UD
+            25XVDt+GrC4Lx6OJsWobLOHm+FDLPzm4Zfo+grU+JaEBo0ZSthUul610iqChwEGF
+            zVMkNKARsZE7lDQ3uN54Mq/A7RQaav4mrt1AbHTOwBR9UdG5hrEJ8JZjObS7Gqz2
+            /OFpX4xr214IA9ALx+O2UIkSAJT9u9Ann/xcKL5GpwE9etcGZbYqOhAPaSzbOSDr
+            BtWuM8Z5nKb1O90pXEe16yVUmFXyO7T+lU1gDrDReSXJJFg7zcjMY4s9rro2H7xq
+            u0z/ufl4sf1E5u7fLLpzrVcqKJAOw+fvfoPeqMrNsGy3r3AdATw9jPp6giRoB8qL
+            xm3gGvs/VedBBqbXMDSCTIuhBcTu3/rrTWb0TJeuMz9RM01owkvtTrL3zjwK81BK
+            pNTwz2a49ylCiDS8Vin2u2jwjoRlri4mPTzw5pvcGqNAoNopv6cjawGQ2toCD5qG
+            tqx0hY0uXAE1cnfewFC63VGFbaBwfCYLryjGLefRH7XFOAcqZ3dlZFi5lJTVnnXO
+            44uO7dW8wfJj45USIEoG6D0BiRU7JPUhgPIjMa1cEI4XpoBSj13EACxovE3z5AYa
+            pX72eJHMkKZ5u+eRrXkrFSGFWkYBGKtgIdbgXn1i9Zw/Ewbf7Qz8kC83kxkih7jS
+            XAEbvfL1DTAHDEyAXFoI2ekIoTTGAtCpsadQcTZ3+3DeWU5R8X29vflEG/kSeRO4
+            m2npmJ9OCKyEN+zAd/WRIQ0wChFgadlTugsDcmXazdvzJ1qJiuNGmzpRn3QF
+            =dltN
+            -----END PGP MESSAGE-----
+        fp: 47E7559E037A35652DBBF8AA8D3C82F9F309F8EC
+    -   created_at: '2021-04-06T11:27:21Z'
+        enc: |
+            -----BEGIN PGP MESSAGE-----
+
+            hQIMA2nIGHycQ3VOAQ//RC1NMySQoeqfTGEKFB7LwC3o0yLTMHAqoi4qm2Q8jKxH
+            6zSjHNoYI9+2VNEWJcSvUwd9ks79jkVOAWO+Lmv2h1QT3RrsSsj16VZwl+ORp50/
+            +PDrZjaimMafAKaqGJ3HaPlzFX7jUjCHS0yCaF6WIU1ztRLVnHAv3p8dsPzQ1w+7
+            p1h0oQ2noWibl2GLGI3+1O3sv1N5tusTGZWFacG6VsTbtbJmbVCO5FQRqX7vcJtM
+            xfClghFPoHCGbN5W1NWpo/a/lOLUucqO7bFB5DIOoXme6SSS7lrYQKtjBQy/4DRe
+            r3VIjvS6ncVUIYPPnEMlxI3MPUB2lwJLG2B89XNNWwfwREUXTG4DEg09Z6jMUqVr
+            yNO67YCF95fNUQFMQ0LWyVsWZW1n1ef7/iKtDHNoFubCVGjWimIa3ZDX/e4WemEN
+            ww7dab2RXEY3oTLJZwAFMN4jeqUfpgH1TOvcs9OHwF0CQjJIDyDj6uyt6wYqITT2
+            dorhmn1FN/tUUNn4hE0iRjFaD1QrN30KZ4pQ1S/G3IkHGzJ4AlelO0j9yE2VMR2q
+            E8wEhVtDlO/VAYZSx7tJ7jd24gFsGlL70OfSXvo7jyNpo+OjaN9yy5Qy8iogwpGC
+            Jua/Y7+XORx3+SVB+1AUNSwCABOhWL2RQGnGxRRQrST4uEv2Gn6IV5sQuPz6my3S
+            TgEtH78YDDWHFdEE4b3lQaPAR8NGNvuE0btjpdeR7QoTOAkmg0SaUNqAoqrz80jj
+            7kdIBtI8XA2CW/oXYcoxHlkqbPNqPAhaRu3YDci8oQ==
+            =ukYv
+            -----END PGP MESSAGE-----
+        fp: 2372651C56E22972C2D9F3F569C8187C9C43754E
+    unencrypted_suffix: _unencrypted
+    version: 3.6.0

machines/fuuko/services/drone/runner-exec.nix

@@ -31,7 +31,7 @@ in
       PAGER = "cat";
     };
     serviceConfig = {
-      EnvironmentFile = lib.singleton config.krops.secrets.drone-rpc-environment.path;
+      EnvironmentFile = lib.singleton config.sops.secrets.drone-rpc-environment.path;
       BindPaths = [
         "/nix/var/nix/daemon-socket/socket"
         "/run/nscd/socket"

machines/fuuko/services/drone/server.nix

@@ -5,9 +5,9 @@ let
   group = "drone-server";
 in
 {
-  krops.secrets = {
-    drone-rpc-environment = { };
-    drone-server-environment = { };
+  sops.secrets = {
+    drone-rpc-environment.sopsFile = ../../secrets.yaml;
+    drone-server-environment.sopsFile = ../../secrets.yaml;
   };
 
   systemd.services.drone-server = {
@@ -24,7 +24,7 @@ in
       DRONE_USER_CREATE = "username:simon,admin:true";
     };
     serviceConfig = {
-      EnvironmentFile = with config.krops.secrets; [
+      EnvironmentFile = with config.sops.secrets; [
         drone-rpc-environment.path
         drone-server-environment.path
       ];

machines/fuuko/services/gitea.nix

@@ -1,10 +1,13 @@
-{ config, pkgs, ... }:
+{ config, lib, pkgs, ... }:
 let
   cfg = config.services.gitea;
 in
 {
-  krops.secrets.gitea-mail.owner = cfg.user;
-  users.users."${cfg.user}".extraGroups = [ "keys" ];
+  sops.secrets.gitea-mail = {
+    owner = cfg.user;
+    sopsFile = ../secrets.yaml;
+  };
+  systemd.services.gitea.serviceConfig.SupplementaryGroups = lib.singleton "keys";
 
   services.gitea = {
     enable = true;
@@ -32,7 +35,7 @@ in
       clonePort = 2022;
     };
     database.type = "postgres";
-    mailerPasswordFile = config.krops.secrets.gitea-mail.path;
+    mailerPasswordFile = config.sops.secrets.gitea-mail.path;
     settings = {
       mailer = {
         ENABLED = true;

machines/fuuko/services/matrix/synapse.nix

@@ -6,11 +6,17 @@ let
   domain = "sbruder.de";
 in
 {
-  krops.secrets = {
-    synapse-registration-shared-secret.group = "matrix-synapse";
-    synapse-turn-shared-secret.group = "matrix-synapse";
+  sops.secrets = {
+    synapse-registration-shared-secret = {
+      owner = "matrix-synapse";
+      sopsFile = ../../secrets.yaml;
     };
-  users.users.matrix-synapse.extraGroups = [ "keys" ];
+    synapse-turn-shared-secret = {
+      owner = "matrix-synapse";
+      sopsFile = ../../secrets.yaml;
+    };
+  };
+  systemd.services.matrix-synapse.serviceConfig.SupplementaryGroups = lib.singleton "keys";
 
   services.matrix-synapse = {
     enable = true;
@@ -71,7 +77,7 @@ in
       suppress_key_server_warning: true
     '';
 
-    extraConfigFiles = with config.krops.secrets; [
+    extraConfigFiles = with config.sops.secrets; [
       synapse-registration-shared-secret.path
       synapse-turn-shared-secret.path
     ];

machines/fuuko/services/prometheus.nix

@@ -184,15 +184,16 @@ in
   # get rid of “could not call action: authorization required” every scrape
   systemd.services.prometheus-fritzbox-exporter.serviceConfig.StandardOutput = "null";
 
-  krops.secrets.prometheus-htpasswd = {
-    group = "nginx";
+  sops.secrets.prometheus-htpasswd = {
+    owner = "nginx";
+    sopsFile = ../secrets.yaml;
   };
 
   services.nginx.virtualHosts."prometheus.sbruder.de" = {
     enableACME = true;
     forceSSL = true;
 
-    basicAuthFile = config.krops.secrets.prometheus-htpasswd.path;
+    basicAuthFile = config.sops.secrets.prometheus-htpasswd.path;
 
     locations = {
       "/".proxyPass = "http://${cfg.listenAddress}:${toString cfg.port}";

machines/fuuko/services/torrent.nix

@@ -98,14 +98,14 @@ in
     "d '${homeDir}' 0771 aria2 aria2 - -"
   ];
 
-  krops.secrets.wg-aria-private-key = { };
+  sops.secrets.wg-aria-private-key.sopsFile = ../secrets.yaml;
 
   networking.wireguard.interfaces.wg-aria = {
     interfaceNamespace = "aria2";
     preSetup = "ip netns add aria2 && ip -n aria2 link set lo up";
     postShutdown = "ip netns del aria2";
 
-    privateKeyFile = config.krops.secrets.wg-aria-private-key.path;
+    privateKeyFile = config.sops.secrets.wg-aria-private-key.path;
   } // (import ../secrets/aria2-wireguard.nix); # potentially sensitive data
 
   environment.etc."netns/aria2/resolv.conf".text = ''

machines/nunotaba/secrets.yaml

@@ -0,0 +1,51 @@
+wg-home-private-key: ENC[AES256_GCM,data:u4svQwAMai742deedGbhr2Pk6wGdmztb1L+93ZQl9eZ8qAfOPhDrcmXAVSQ=,iv:ilMwQGV8+9Bk78lq6slLgKtQaWPgdTbwgA6pxgK5gLY=,tag:Vui4xbbvreC6j2UxrR0o3A==,type:str]
+sops:
+    kms: []
+    gcp_kms: []
+    azure_kv: []
+    hc_vault: []
+    lastmodified: '2021-04-06T11:11:35Z'
+    mac: ENC[AES256_GCM,data:mP+I2i2Iam02GnIwnzO+AfQNaPKPyHR7JhVf5zrt2p1MuMBkDH5LZp3BT4YDxetj9u5bevyTuC4x2gZ+H2lcBUNovuXYLPEoNqE+MvwRHitSkDEV6qR5CPaA63AJll9dW6P0+c7Dv0QZTyO2Zs71Hk9hJEnUEmNbqo1xhgATvFw=,iv:hJ/Yaa55/O5XnRie8MKbe+vz4C4qFF8npOLy4E+9jBk=,tag:9ljgygjLx3fcid4XuJcebg==,type:str]
+    pgp:
+    -   created_at: '2021-04-06T11:11:32Z'
+        enc: |
+            -----BEGIN PGP MESSAGE-----
+
+            hQIMAwDgSONkM+d4ARAAwkb7dnfNKpXcCxT+G9lgoS78eIlMQz/y5Ask6ENviXun
+            reSn7/DQJeFBhtK6XODqDUjYkg0VihviFGl47Fw7HfVZKYpG1KB7bXMiBBPycwAB
+            b0OmBMAwfH6tdfIye6shcal+4I1qlhCKmWBtNcg0KKd95EMK3sGki5l8cRlsFO/e
+            IA1f5Xw2/t8tfFdYIXrSqwInGcMIOKLBCO/NH7Fcw0enqZz4L9X5StfdxeHnirnt
+            QFw05FoH2LgTfDiF2MRbllRIVQD0XwylleL+4EAZGl83vsn95j/1CPuBtAq+Nnen
+            uKpVTyCMUiaokKHOMlNsv6elqxCHEs9ai9pwFkVZrBAoofjVEzuPoFw+2E9Fpvtk
+            hsAoSEPFLL9SKHpVTzaC3h272jrImQWitkqlZYzpaWAdDnG/3imRXx1cqX1AgJdz
+            hE6GHoBkDZ/TmE5DBNqQZ7h1JXvJPecu8EFaGwPKcq/AR3zgH6D1iUfpAPfoMpir
+            ngTHeZAsfUcaQ1h3KP9d6Atq6Q13C3SJL9DyE2NYl5NVMwLcBx8qSetItzwMpix4
+            XqEj9jjpiUNYaY8oM9uzuGSDHlGsFPBEsvpqnDV2a2FqOmDS+faEgH7eXnqdbXgp
+            xBHH4F6hgUees0gpsum8Uf5yaZilaGkNJjKfpGPgI3W4WyFq10kk4lu4Zbgg3VfS
+            XgHcM8JkYx9cvsPO/QFbcOhVZeV60kyjHZY+bOufJ6iG9f8MrtsXY5IVx2I/wjCM
+            j3/YrY7vXK31i8toVf7+sPxipjoMItkppBg2Uo5SJg7hqksfBan/emVVT8zrOcY=
+            =swUH
+            -----END PGP MESSAGE-----
+        fp: 47E7559E037A35652DBBF8AA8D3C82F9F309F8EC
+    -   created_at: '2021-04-06T11:11:32Z'
+        enc: |
+            -----BEGIN PGP MESSAGE-----
+
+            hQIMA0PuGXQ/rB1cAQ//T/ieiP/sj93zsDnMZNuahlyONBeY3Z5IbKCCi6iAl05b
+            9bKKcKr37nPm/np2pAZjmGftNEpkwjfF047Qg9AcmnwyoIeOiYIGR6ILtnRwtjri
+            tx5RBDMpmPs/h3xocaqAWfHKxXGT452GKy6taOiHitjJcIWUKX0pFdOucw5u5/AL
+            mimc4S0W1iLUxXmNJAy/YxQKvBzkXtDx6/ixEm5JnxSG6Xn+q6Go9VPFGBOQLKnt
+            1WHSUVu/6gHjtYmnt5VqDKjVY/pjZZrsLfFHAH8RlYPJMp48jQjoXptrZgdtPV7p
+            +fu+sEgMBal8W4YaI8bHG6iliYvSZoMcpvFsdoIhxThXzyZjMZCEY/h9a8oYqmdk
+            6RQZl63LlxsZi5v5Db31pbaiPC30R6rTuCm5n4wTiOKqQ4WG61yd9Sc/R/3vT6ux
+            hZRywmZUVjVBT+TnZ+Eclcg2xm27Tk+uIRMYq4mjP0XV3oYCA+1o+La6YBpmBgMH
+            kpFbx3IcxHJT2gRFTg7bg78NYvgb5CYRFGz0sfnhlrwjLgYQFzJT7l2w/2yFDQdo
+            u+bDwF7cvNyGQiEEJilcuh1Cf/lk/1Ol+9LQftF2bNNzoKn2QzDeTp11bTrhPJnj
+            HNLwZjNord4fF7pak7bSkjYYKrhW+NpzN1oT7ioQ7V3If99Em4wMssGLRrzvBgLS
+            UAGk4FkNoLosNdxNDovwHwUK2T0zPWuOZ+wvRPcZQk9fTycdXo8MhiyaLaU09Nsh
+            mWG2tdK/8KDP1aXupXzT70XQUk2q8QxwRYAJOa3NupXV
+            =pjuj
+            -----END PGP MESSAGE-----
+        fp: 8C5091AEA213FB0642BD46F943EE19743FAC1D5C
+    unencrypted_suffix: _unencrypted
+    version: 3.6.0

machines/sayuri/hardware-configuration.nix

@@ -43,7 +43,7 @@
         label = "data";
         enable = true;
         blkDev = "/dev/disk/by-uuid/576088d4-9aae-4159-a028-feadb2621a1a";
-        keyFile = "/mnt-root" + toString <secrets> + "/luks-data";
+        keyFile = "/mnt-root/root/luks-data";
       };
     };
   };

machines/vueko/configuration.nix

@@ -100,12 +100,15 @@ in
     };
   };
 
-  krops.secrets.murmur-superuser.owner = config.users.users.murmur.name;
+  sops.secrets.murmur-superuser = {
+    owner = config.users.users.murmur.name;
+    sopsFile = ./secrets.yaml;
+  };
 
   services.murmur = {
     enable = true;
     openFirewall = true;
-    superuserPasswordFile = config.krops.secrets.murmur-superuser.path;
+    superuserPasswordFile = config.sops.secrets.murmur-superuser.path;
     acmeDomain = "mumble.sbruder.de";
     config = {
       bandwidth = "128000";

machines/vueko/secrets.yaml

@@ -0,0 +1,52 @@
+murmur-superuser: ENC[AES256_GCM,data:jTVEa1KmbGAIxxFS2/uIlDCnnJTtGmKFZQ==,iv:YJIfcXlgKEwIRzFEY94dgReNjWZqLAqL0Rb6TG4IHIE=,tag:MVzaRkb24QyyNyFCEMwmzQ==,type:str]
+wg-home-private-key: ENC[AES256_GCM,data:/RHNF6Zw6CTWa9ahUhGWRfkR8KIj+HdqUIojA1w6HQBFbZ/+Vo+CcYTYO5I=,iv:2sDH1P3VRjmLw6Ilkq0rw/hossHrNWP5uRvX9yr5fLE=,tag:KIT5GCfXuhg6RjA8+Nmtnw==,type:str]
+sops:
+    kms: []
+    gcp_kms: []
+    azure_kv: []
+    hc_vault: []
+    lastmodified: '2021-04-06T11:14:32Z'
+    mac: ENC[AES256_GCM,data:eMx+ls4NHFqKNwW4XmrtVsizbtnASeO38cw3oPeSlvW8NbT8yUZWRxRofhzg3nD3icyGcwhImVMKHgVz5305zwvrjx0D9n+URe733WPcMmfR39G0FfXz+9kob6p5TVruKjL6qTPmyNRD+8E8CvmBmnwPwRW46F5Pvadum2SZJ3c=,iv:zVxvTUJaTx57KAglUkSNzGsxcX0csPU4qYkkLHwl7bs=,tag:a2Al47gGxFm6XubaTAdw9A==,type:str]
+    pgp:
+    -   created_at: '2021-04-06T11:13:54Z'
+        enc: |
+            -----BEGIN PGP MESSAGE-----
+
+            hQIMAwDgSONkM+d4ARAAxn8UVtRKn0s+wpuUBpk3cCwSSa3te4BjHshyNrI3TyZ9
+            A2jEVz7xfZXItD5VMs9cZmwhm5kD5qC+2qFauwAnQA8JVn5pCKL1gVxGZURZHgPe
+            eLON75sxWCt6+A+HCXvl8x8ay2ZMSgQ3N+SSuqrihMKe0UcsngzAJQS4qIUPIrQd
+            YQYkm2Nf6n1Ya+t05W0CRqyHLLkwObOF0OWN/t8wvBOh4HY2UCRqvXqSEz6nCb06
+            8jDfy6GLhJBjSMV5000/GTvnbVNH11vYjqq0U/2k33HYD/ddX2TPRarWKQsWi8Fe
+            QYYMjU/zIubNQ1y2Iv89zzpd7DBVFlnCkjnSIjxop+eR4Kk8EUkJnGFHlRek67lc
+            k9le8sdlBTYBahT48igpKWfxrZ3bky27O39TLY7luLAXxpjWTGZ//8WD3eJyiY9d
+            k/TmI7ZLLtR42NKeD/anVmHpSf/rHtgHWwYm1m0Qz0/mvKWhZbdkFTPGWMPVAPNu
+            hBiBjuXd1Gt8ekKr3jZxLR4uRCzzeCA/zXib4x7HvYs/9cLib2UblHsB2hLYwZQ8
+            ah59+O51SrcJWcq56kRhwKbrqh6Oui/KCXUSTdbO2auwtzBxUMmcbJAZV5cxRdtA
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+            =JlIF
+            -----END PGP MESSAGE-----
+        fp: 47E7559E037A35652DBBF8AA8D3C82F9F309F8EC
+    -   created_at: '2021-04-06T11:13:54Z'
+        enc: |
+            -----BEGIN PGP MESSAGE-----
+
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+            mSfsOU6k+KcWtXYpurZr31zUVK626Re0fsr5XbPSj+9G
+            =Grqu
+            -----END PGP MESSAGE-----
+        fp: BB046D773F54739757553A053CB9B8EFD7FED749
+    unencrypted_suffix: _unencrypted
+    version: 3.6.0

modules/default.nix

@@ -59,6 +59,8 @@ in
     ./udev.nix
     ./unfree.nix
     ./wireguard
+
+    "${(import ../nix/sources.nix).sops-nix}/modules/sops"
   ];
 
   config = lib.mkMerge [

modules/media-proxy.nix

@@ -2,19 +2,19 @@
 let
   port = 8888;
   services = {
-    "media" = config.krops.secrets.media-proxy-auth.path;
-    "torrent" = config.krops.secrets.torrent-proxy-auth.path;
+    "media" = config.sops.secrets.media-proxy-auth.path;
+    "torrent" = config.sops.secrets.torrent-proxy-auth.path;
   };
 in
 {
   options.sbruder.media-proxy.enable = lib.mkEnableOption "media proxy";
 
   config = lib.mkIf config.sbruder.media-proxy.enable {
-    krops.secrets = {
-      torrent-proxy-auth.group = "nginx";
-      media-proxy-auth.group = "nginx";
+    sops.secrets = {
+      torrent-proxy-auth.owner = "nginx";
+      media-proxy-auth.owner = "nginx";
     };
-    users.users.nginx.extraGroups = [ "keys" ];
+    systemd.services.nginx.serviceConfig.SupplementaryGroups = lib.singleton config.users.groups.keys.name;
 
     # otherwise name resolution fails
     systemd.services.nginx.after = [ "network-online.target" ];

modules/restic/system.nix

@@ -67,7 +67,7 @@ in
   };
 
   config = lib.mkIf cfg.enable {
-    krops.secrets = {
+    sops.secrets = {
       restic-password = { };
       restic-s3 = { };
     };
@@ -75,8 +75,8 @@ in
     services.restic.backups.system = {
       inherit repository;
       inherit (cfg) timerConfig;
-      passwordFile = config.krops.secrets.restic-password.path;
-      s3CredentialsFile = config.krops.secrets.restic-s3.path;
+      passwordFile = config.sops.secrets.restic-password.path;
+      s3CredentialsFile = config.sops.secrets.restic-s3.path;
       paths = [
         "/etc"
         "/home"

modules/secrets.nix

@@ -1,66 +1,3 @@
-# Adapted from https://github.com/Mic92/dotfiles/blob/23f163cae52545d44a7e379dc204010b013d679a/nixos/vms/modules/secrets.nix
-#
-# All of the users wanting to access any key under /run/keys have to be a
-# member of the keys group (or be root). This is a hard coded limitation of
-# NixOS and I haven’t found a way to allow everyone to access /run/keys/ (not a
-# security problem since the keys themselves are given the right permissions).
-{ config, lib, pkgs, ... }:
-let
-  secret = lib.types.submodule ({ config, ... }: {
-    options = {
-      name = lib.mkOption {
-        type = lib.types.str;
-        default = config._module.args.name;
-      };
-      path = lib.mkOption {
-        type = lib.types.str;
-        default = "/run/keys/${config.name}";
-      };
-      mode = lib.mkOption {
-        type = lib.types.str;
-        default = "0440";
-      };
-      owner = lib.mkOption {
-        type = lib.types.str;
-        default = "root";
-      };
-      group = lib.mkOption {
-        type = lib.types.str;
-        default = "root";
-      };
-      source = lib.mkOption {
-        type = lib.types.str;
-        default = toString <secrets> + "/${config.name}";
-      };
-    };
-  });
-in
 {
-  options.krops.secrets = lib.mkOption {
-    type = lib.types.attrsOf secret;
-    default = { };
-  };
-  config = lib.mkIf (config.krops.secrets != { }) {
-    system.activationScripts.setup-secrets =
-      let
-        script = ''
-          echo "setting up secrets…"
-        '' + lib.concatMapStringsSep
-          "\n"
-          (secret: ''
-            ${pkgs.coreutils}/bin/install \
-              -D \
-              --compare \
-              --verbose \
-              --mode=${lib.escapeShellArg secret.mode} \
-              --owner=${lib.escapeShellArg secret.owner} \
-              --group=${lib.escapeShellArg secret.group} \
-              ${lib.escapeShellArg secret.source} \
-              ${lib.escapeShellArg secret.path} \
-            || echo "failed to copy ${secret.source} to ${secret.path}"
-          '')
-          (lib.attrValues config.krops.secrets);
-      in
-      lib.stringAfter [ "users" "groups" ] "source ${pkgs.writeText "setup-secrets.sh" script}";
-  };
+  sops.defaultSopsFile = ../secrets.yaml;
 }

modules/wireguard/home.nix

@@ -36,12 +36,14 @@ in
   };
 
   config = lib.mkIf cfg.enable {
-    krops.secrets.wg-home-private-key = { };
+    sops.secrets.wg-home-private-key = {
+      sopsFile = builtins.path { path = "${toString ./.}/../../machines/${config.networking.hostName}/secrets.yaml"; };
+    };
 
     sbruder.wireguard.home.address = peers."${config.networking.hostName}".address;
 
     networking.wireguard.interfaces.wg-home = {
-      privateKeyFile = config.krops.secrets.wg-home-private-key.path;
+      privateKeyFile = config.sops.secrets.wg-home-private-key.path;
       ips = [ "${cfg.address}/24" ];
       listenPort = if enableServer then 51820 else null;
       peers =

nix/sources.json

@@ -70,5 +70,17 @@
         "type": "tarball",
         "url": "https://github.com/cachix/pre-commit-hooks.nix/archive/c7e3896e35ceea480a7484ec1709be7bdda8849d.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
+    },
+    "sops-nix": {
+        "branch": "master",
+        "description": "Atomic secret provisioning for NixOS based on sops",
+        "homepage": "",
+        "owner": "Mic92",
+        "repo": "sops-nix",
+        "rev": "441227c4fd831818fb55f366ea16ea6364850102",
+        "sha256": "0dv8kbax83rrvq599q5m2x4xi805iv343r68fmh7k2i44c0s4kck",
+        "type": "tarball",
+        "url": "https://github.com/Mic92/sops-nix/archive/441227c4fd831818fb55f366ea16ea6364850102.tar.gz",
+        "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     }
 }

secrets.yaml

@@ -0,0 +1,94 @@
+media-proxy-auth: ENC[AES256_GCM,data:KaYd8TCMVlHbgoj1QQfRwTXAK2hJUDr0UJqhTXvILylyR+mdJy7smn5EtFdNNFWZk6eJituvGG7naT2/UiNoYne4ljlJhu/IuObTLY5AI9ELDtYBDQ==,iv:qo6SOaHrWsXfvRwgSKDTSnreOcO9xy3RKrfE2k+VLEg=,tag:SND1zp2Cd2gqQdOVWw2eWw==,type:str]
+torrent-proxy-auth: ENC[AES256_GCM,data:9XuDRdUjOClPuZFvI7VwYQdbegzg400zfmFmE3qt5kTo6bD7m74V9F3b73aUueqMQ+80PxBc1KusTTlPYy2LAf6mT4PQ2TpqSu0kBXAezfL4e5fxdQ==,iv:26d+hQ9yn5CzDGNZvi9A5bvzgo87IrJHz67xTac4UA4=,tag:5FtjmtIY1gSixu/9UZhBVA==,type:str]
+restic-s3: ENC[AES256_GCM,data:lRcwoChzSX+ICXyafAtBGjkBTBdzL5v/imUL2yHtApMOe+MkP5CjXr47WoWGt17tdLPVRQ9v7/6jcagTKIk3IfjmhRhMip3CMyPkio62uDxArlaKpi9GoZNQOCt+XHWlpiBJ609H,iv:yrp2QZLXJypWh5XjsAHcpiXEPUcYF8A+mQZ+W2w7zpU=,tag:Xis3NQ2KNQqG+Rmgzpy3Tg==,type:str]
+restic-password: ENC[AES256_GCM,data:Bi/WJAVECgBegIZMV/MZN8kvHyxsh/xERAnZ6TQ1OIOkffqkWBwx6DCS1cVJ0Nzz,iv:8/WPCuGfLkd0LkLTEr7pjpT8kb/P64VICppDeEcKDIE=,tag:JLgYEekrZG91AapztOYBTw==,type:str]
+sops:
+    kms: []
+    gcp_kms: []
+    azure_kv: []
+    hc_vault: []
+    lastmodified: '2021-04-06T11:12:39Z'
+    mac: ENC[AES256_GCM,data:guWWnJb9153SmSFwvDEqru0GGYUgQCmCtDb/bmKCehUvQ2ecVDulYYKAQ5jq2v3Eo5pfKmdrtIMV/jf6TOwNyEqBuWxU5aUODMheSqYgDNKAcFSvwpdldyVATspt7XT0s0waUbFBPjMOmQC0TEp5rtZXS7PlRT8DgohUlyy6jhI=,iv:Eh3Uwctaw0hrI6Ux2q0WUixZiLF5Fdj3/AVG8PluCHc=,tag:Jo3bzKNQzH7tsatfLphagQ==,type:str]
+    pgp:
+    -   created_at: '2021-04-06T11:13:25Z'
+        enc: |
+            -----BEGIN PGP MESSAGE-----
+
+            hQIMAwDgSONkM+d4AQ/7BodHEMmqPhO3VSvOa8lqTHHXv9HxL5T9MkaMlclTGW4W
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+            Kvr0nEjwFRydxy6/I61Z/hFlb2P7OBaReNBA2zve1OAIvBRUNI+m6Tl/7O/M
+            =cMUp
+            -----END PGP MESSAGE-----
+        fp: 47E7559E037A35652DBBF8AA8D3C82F9F309F8EC
+    -   created_at: '2021-04-06T11:13:25Z'
+        enc: |
+            -----BEGIN PGP MESSAGE-----
+
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+        fp: 8C5091AEA213FB0642BD46F943EE19743FAC1D5C
+    -   created_at: '2021-04-06T11:13:25Z'
+        enc: |
+            -----BEGIN PGP MESSAGE-----
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+        fp: BB046D773F54739757553A053CB9B8EFD7FED749
+    -   created_at: '2021-04-06T11:13:25Z'
+        enc: |
+            -----BEGIN PGP MESSAGE-----
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+            cLTcQfThrWSoXSiBq9+Mr8bwQpnTJf3lrPGx4YPZ3g==
+            =QcVc
+            -----END PGP MESSAGE-----
+        fp: 2372651C56E22972C2D9F3F569C8187C9C43754E
+    unencrypted_suffix: _unencrypted
+    version: 3.6.0

shell.nix

@@ -42,6 +42,10 @@ let
           "root@$hostname" \
           "cat > /crypt-ramfs/passphrase" < <(pass "devices/$machine/luks")
     '';
+
+    show-key-fingerprint = ''
+      gpg --with-fingerprint --with-colons --show-key "$1" | awk -F: '$1 == "fpr" { print $10; exit }'
+    '';
   };
 in
 pkgs.mkShell {
@@ -49,8 +53,13 @@ pkgs.mkShell {
     git
     niv
     nixpkgs-fmt
+    sops
+    ssh-to-pgp
   ]) ++ (pkgs.lib.mapAttrsToList pkgs.writeShellScriptBin scripts);
+
   shellHook = ''
     ${pre-commit-check.shellHook}
+
+    find ${./. + "/keys"} -type f -print0 | xargs -0 gpg --quiet --import
   '';
 }