Generate key pairs for actors

includes/migrations.php

@@ -24,6 +24,7 @@ function run_migrations() {
     apply_migration( '0.0.2', 'migration_0_0_2' );
     apply_migration( '0.0.3', 'migration_0_0_3' );
     apply_migration( '0.0.4', 'migration_0_0_4' );
+    apply_migration( '0.0.5', 'migration_0_0_5' );
     update_option( 'pterotype_previously_migrated_version', PTEROTYPE_VERSION );
 }
 
@@ -222,4 +223,20 @@ function migration_0_0_4() {
        "
     );
 }
+
+function migration_0_0_5() {
+    global $wpdb;
+    $wpdb->query(
+        '
+       CREATE TABLE pterotype_keys(
+           actor_id INT UNSIGNED PRIMARY KEY,
+           public_key TEXT NOT NULL,
+           private_key TEXT NOT NULL,
+           FOREIGN KEY keys_actor_fk(actor_id)
+               REFERENCES pterotype_actors(id)
+       )
+       ENGINE=InnoDB DEFAULT CHARSET=utf8;
+       '
+    );
+}
 ?>

includes/pgp.php

@@ -0,0 +1,28 @@
+<?php
+namespace pgp;
+
+function gen_key( $actor_slug ) {
+    $rsa = new \phpseclib\Crypt\RSA();
+    return $rsa->createKey( 2048 );
+}
+
+function persist_key( $actor_id, $public_key, $private_key ) {
+    global $wpdb;
+    return $wpdb->replace(
+        'pterotype_keys',
+        array(
+            'actor_id' => $actor_id,
+            'public_key' => $public_key,
+            'private_key' => $private_key
+        ),
+        array( '%d', '%s', '%s' )
+    );
+}
+
+function get_public_key( $actor_id ) {
+    global $wpdb;
+    return $wpdb->get_var( $wpdb->prepare(
+        'SELECT public_key FROM pterotype_keys WHERE actor_id = %d', $actor_id
+    ) );
+}
+?>

includes/server/actors.php

@@ -1,6 +1,8 @@
 <?php
 namespace actors;
 
+require_once plugin_dir_path( __FILE__ ) . '../pgp.php';
+
 function get_actor( $id ) {
     global $wpdb;
     $row = $wpdb->get_row( $wpdb->prepare(
@@ -109,8 +111,20 @@ function initialize_actors() {
     );
     foreach ( $user_slugs as $user_slug ) {
         create_actor( $user_slug, 'user' );
+        $actor_id = get_actor_id( $user_slug );
+        $keys_created = \pgp\get_public_key( $actor_id );
+        if ( ! $keys_created ) {
+            $keys = \pgp\gen_key( $user_slug );
+            \pgp\persist_key( $actor_id, $keys['publickey'], $keys['privatekey'] );
+        }
     }
     create_actor( PTEROTYPE_BLOG_ACTOR_SLUG, 'blog' );
+    $blog_actor_id = get_actor_id( PTEROTYPE_BLOG_ACTOR_SLUG );
+    $keys_created = \pgp\get_public_key( $blog_actor_id );
+    if ( ! $keys_created ) {
+        $keys = \pgp\gen_key( PTEROTYPE_BLOG_ACTOR_SLUG );
+        \pgp\persist_key( $blog_actor_id, $keys['publickey'], $keys['privatekey'] );
+    }
 }
 
 function create_actor( $slug, $type ) {

pterotype.php

@@ -5,7 +5,7 @@ Plugin Name: Pterotype
 require_once plugin_dir_path( __FILE__ ) . 'vendor/autoload.php';
 require_once plugin_dir_path( __FILE__ ) . 'includes/init.php';
 
-define( 'PTEROTYPE_VERSION', '0.0.4' );
+define( 'PTEROTYPE_VERSION', '0.0.5' );
 define( 'PTEROTYPE_BLOG_ACTOR_SLUG', '-blog' );
 define( 'PTEROTYPE_BLOG_ACTOR_USERNAME', 'blog' );