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cacme/vendor/acmephp/ssl/Generator/DsaKey/DsaKeyGenerator.php

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+<?php
+
+/*
+ * This file is part of the Acme PHP project.
+ *
+ * (c) Titouan Galopin <galopintitouan@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace AcmePhp\Ssl\Generator\DsaKey;
+
+use AcmePhp\Ssl\Generator\KeyOption;
+use AcmePhp\Ssl\Generator\OpensslPrivateKeyGeneratorTrait;
+use AcmePhp\Ssl\Generator\PrivateKeyGeneratorInterface;
+use AcmePhp\Ssl\PrivateKey;
+use Webmozart\Assert\Assert;
+
+/**
+ * Generate random DSA private key using OpenSSL.
+ *
+ * @author Jérémy Derussé <jeremy@derusse.com>
+ */
+class DsaKeyGenerator implements PrivateKeyGeneratorInterface
+{
+    use OpensslPrivateKeyGeneratorTrait;
+
+    public function generatePrivateKey(KeyOption $keyOption): PrivateKey
+    {
+        Assert::isInstanceOf($keyOption, DsaKeyOption::class);
+
+        return $this->generatePrivateKeyFromOpensslOptions([
+            'private_key_type' => OPENSSL_KEYTYPE_DSA,
+            'private_key_bits' => $keyOption->getBits(),
+        ]);
+    }
+
+    public function supportsKeyOption(KeyOption $keyOption): bool
+    {
+        return $keyOption instanceof DsaKeyOption;
+    }
+}

cacme/vendor/acmephp/ssl/Generator/DsaKey/DsaKeyOption.php

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+<?php
+
+/*
+ * This file is part of the Acme PHP project.
+ *
+ * (c) Titouan Galopin <galopintitouan@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace AcmePhp\Ssl\Generator\DsaKey;
+
+use AcmePhp\Ssl\Generator\KeyOption;
+
+class DsaKeyOption implements KeyOption
+{
+    /** @var int */
+    private $bits;
+
+    public function __construct(int $bits = 2048)
+    {
+        $this->bits = $bits;
+    }
+
+    public function getBits(): int
+    {
+        return $this->bits;
+    }
+}