Initial commit

composer.json

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+{
+    "name": "bart/licensee",
+    "description": "Simple PHP class for license generation and verification based on openssl signatures",
+	"keywords": ["license", "openssl", "signature"],
+	"license": "MIT",
+    "authors": [
+        {
+            "name": "Rene Bartkowiak",
+            "email": "info@rene-bartkowiak.com"
+        }
+    ],
+    "require": {
+        "php": ">=5.3.0",
+        "illuminate/support": "4.1.x",
+		"claudusd/cryptography": "dev-master"
+    },
+    "autoload": {
+        "psr-0": {
+            "Bart\\Licensee": "src/"
+        }
+    },
+    "minimum-stability": "dev"
+}

src/Bart/Licensee/License.php

@@ -0,0 +1,138 @@
+<?php
+
+namespace Bart\Licensee;
+
+use Claudusd\Cryptography\Signature\Implementation\SignatureSignPrivateKey;
+use Claudusd\Cryptography\KeyGeneration\Implementation\KeyGenerationSHA512RSA4096Bits;
+
+
+/**
+ * This class implements simple methods for license creation and validation.
+ * Usage example:
+ * $data = array('licensee' => 'Company', 'version' => '1.0', 'valid_until' => time() + 60*60*24*7, 'key' => sha1(uniqid(true)));
+ * $lic = new License();
+ * $lic::createKeypair('/tmp/private.pem', '/tmp/public.pem');
+ * $lic->createLicense($data, '/tmp/private.pem', '/tmp/license.lic');
+ * $res = $lic->getDataAndValidateLicense('/tmp/license.lic', '/tmp/public.pem');
+ * var_dump($res);
+ *
+ * @package Bart\Licensee
+ */
+class License {
+
+	private $sspk, $data, $signature, $license;
+
+	public function __construct() {
+		$this->setSspk(new SignatureSignPrivateKey());
+	}
+
+	/**
+	 * @param array       $data             Data to sign
+	 * @param string      $private_key_path Path to private key file
+	 * @param bool|string $license_path     Path to file where created license_path should be stored or false for no license_path storing
+	 * @return string License data in json format
+	 */
+	public function createLicense($data, $private_key_path, $license_path = false) {
+		$this->setData(json_encode($data));
+		$this->setSignature(base64_encode($this->getSspk()->sign($this->getData(), file_get_contents($private_key_path))));
+		$license = json_encode(array('data'      => $this->getData(),
+									 'signature' => $this->getSignature()));
+
+		$this->setLicense($license);
+
+		if ($license_path !== false) {
+			$this->storeLicense($license_path);
+		}
+
+		return $license;
+	}
+
+	/**
+	 * @param string $path Path to license_path file
+	 * @return void
+	 */
+	public function storeLicense($path) {
+		file_put_contents($path, $this->getLicense());
+	}
+
+	/**
+	 * @param string $license_path    Path to license_path file
+	 * @param string $public_key_path Path to public key file
+	 * @return bool
+	 */
+	public function validateLicense($license_path, $public_key_path) {
+		$this->setLicense(file_get_contents($license_path));
+		$this->processLicense();
+
+		return $this->getSspk()->verify($this->getData(), base64_decode($this->getSignature()), file_get_contents($public_key_path));
+	}
+
+	/**
+	 * @param string $license_path    Path to license_path file
+	 * @param string $public_key_path Path to public key file
+	 * @return bool|string Data when verified, false if not
+	 */
+	public function getDataAndValidateLicense($license_path, $public_key_path) {
+		if ($this->validateLicense($license_path, $public_key_path)) {
+			return $this->getData();
+		}
+		else {
+			return false;
+		}
+
+	}
+
+	/**
+	 * @param string|null $private_key_path Path to private key file or false for no private key
+	 * @param string|null $public_key_path  Path to public key file or false for no public key
+	 */
+	public static function createKeypair($private_key_path = false, $public_key_path = false) {
+		$key = new KeyGenerationSHA512RSA4096Bits();
+
+		if ($private_key_path) {
+			file_put_contents($private_key_path, $key->getPrivateKey());
+		}
+
+		if ($public_key_path) {
+			file_put_contents($public_key_path, $key->getPublicKey());
+		}
+	}
+
+	private function processLicense() {
+		$this->setData(json_decode($this->getLicense())->data);
+		$this->setSignature(json_decode($this->getLicense())->signature);
+	}
+
+	private function setLicense($license) {
+		$this->license = $license;
+	}
+
+	private function getLicense() {
+		return $this->license;
+	}
+
+	private function setData($data) {
+		$this->data = $data;
+	}
+
+	private function getData() {
+		return $this->data;
+	}
+
+	private function setSignature($signature) {
+		$this->signature = $signature;
+	}
+
+	private function getSignature() {
+		return $this->signature;
+	}
+
+	private function setSspk($sspk) {
+		$this->sspk = $sspk;
+	}
+
+	private function getSspk() {
+		return $this->sspk;
+	}
+
+}