Create PublicKey

src/LaravelAge.php

@@ -9,13 +9,13 @@ class LaravelAge
     public function __construct(private ?PrivateKey $privateKey = null, private ?PublicKey $publicKey = null)
     {
         /* If no keys are provided, use the one from .env or create a pair. */
-        if (!isset($privateKey) && !isset($publicKey)) {
+        if (! isset($privateKey) && ! isset($publicKey)) {
             $this->privateKey = new PrivateKey(config('laravel-age.identity'));
             $this->publicKey = $this->privateKey->getPublicKey();
         }
 
         /* If only the private key is provided, generate the public key. */
-        if (isset($privateKey) && !isset($publicKey)) {
+        if (isset($privateKey) && ! isset($publicKey)) {
             $this->publicKey = $privateKey->getPublicKey();
         }
     }
@@ -29,7 +29,7 @@ public static function generateKeypair(): LaravelAge
 
     public function getPublicKey(): PublicKey
     {
-        if (!isset($this->publicKey)) {
+        if (! isset($this->publicKey)) {
             throw new Exception('Public key not set!');
         }
 
@@ -38,7 +38,7 @@ public function getPublicKey(): PublicKey
 
     public function getPrivateKey(): PrivateKey
     {
-        if (!isset($this->privateKey)) {
+        if (! isset($this->privateKey)) {
             throw new Exception('Private key not set!');
         }
 
@@ -47,7 +47,7 @@ public function getPrivateKey(): PrivateKey
 
     public function encrypt(string $message): string
     {
-        if (!isset($this->publicKey)) {
+        if (! isset($this->publicKey)) {
             throw new Exception('Public key not set!');
         }
 
@@ -56,7 +56,7 @@ public function encrypt(string $message): string
 
     public function decrypt(string $message): string
     {
-        if (!isset($this->privateKey)) {
+        if (! isset($this->privateKey)) {
             throw new Exception('Private key not set!');
         }
 

src/PublicKey.php

@@ -0,0 +1,36 @@
+<?php
+
+namespace Castelnuovo\LaravelAge;
+
+use Exception;
+use Illuminate\Support\Facades\Process;
+
+class PublicKey
+{
+    public function __construct(private string $publicKey)
+    {
+        $publicKeyStr = str($this->publicKey);
+        if (! $publicKeyStr->startsWith('age') || ! $publicKeyStr->length() === 62) {
+            throw new Exception('Invalid public key provided!');
+        }
+    }
+
+    public function encode(): string
+    {
+        return $this->publicKey;
+    }
+
+    public function encrypt(string $message): string
+    {
+        $result = Process::pipe([
+            "echo {$message}",
+            "age -r {$this->publicKey}",
+        ]);
+
+        if ($result->failed()) {
+            throw new Exception('Failed to encrypt message!');
+        }
+
+        return base64_encode($result->output());
+    }
+}