最新消息:

PHP封装ssl非对称加密算法

PHP yvsm 1061浏览 0评论
<?php
class Rsa
{
	/**
	 * private key
	 */
	private $_privKey;
	 
	/**
	 * public key
	 */
	private $_pubKey;
	 
	/**
	 * the keys saving path
	 */
	private $_keyPath;
	 
	/**
	 * the construtor,the param $path is the keys saving path
	 */
	public function __construct($path)
	{
		if(empty($path) || !is_dir($path))
		{
			throw new Exception('Must set the keys save path');
		}
		 
		$this->_keyPath = $path;	
	}

	
	/**
	 * create the key pair,save the key to $this->_keyPath
	 */
	public function createKey()
	{
		$privateKeyFile = $this->_keyPath . '/' . 'priv.key';
		$publicKeyFile = $this->_keyPath . '/' .  'pub.key';
		if (file_exists($privateKeyFile) && file_exists($publicKeyFile))
		{
			return true;
		}
		
		// 创建私钥文件
		$r = openssl_pkey_new();
		openssl_pkey_export($r, $privKey);
		file_put_contents($privateKeyFile, $privKey);
		$this->_privKey = openssl_pkey_get_private($privKey);
		
		// 创建公钥文件
		$rp = openssl_pkey_get_details($r);
		$pubKey = $rp['key'];
		file_put_contents($this->_keyPath . '/' .  'pub.key', $pubKey);
		$this->_pubKey = openssl_pkey_get_public($pubKey);
	}

	
	/**
	 * setup the private key
	 */
	public function setupPrivKey()
	{
		if(is_resource($this->_privKey))
		{
			return true;
		}
		$file = $this->_keyPath . '/' . 'priv.key';
		$prk = file_get_contents($file);
		$this->_privKey = openssl_pkey_get_private($prk);
		return true;
	}
	
	
	/**
	 * setup the public key
	 */
	public function setupPubKey()
	{
		if(is_resource($this->_pubKey))
		{
			return true;
		}
		$file = $this->_keyPath . '/' .  'pub.key';
		$puk = file_get_contents($file);
		$this->_pubKey = openssl_pkey_get_public($puk);
		return true;
	}
	
	
	/**
	 * encrypt with the private key
	 */
	public function privEncrypt($data)
	{
		if(!is_string($data))
		{
			return null;
		}

		$this->setupPrivKey();

		$r = openssl_private_encrypt($data, $encrypted, $this->_privKey);
		if($r)
		{
			return base64_encode($encrypted);
		}
		return null;
	}
	
	
	/**
	 * decrypt with the private key
	 */
	public function privDecrypt($encrypted)
	{
		if(!is_string($encrypted))
		{
			return null;
		}
		 
		$this->setupPrivKey();
		 
		$encrypted = base64_decode($encrypted);

		$r = openssl_private_decrypt($encrypted, $decrypted, $this->_privKey);
		if($r){
			return $decrypted;
		}
		return null;
	}
	
	
	/**
	 * encrypt with public key
	 */
	public function pubEncrypt($data)
	{
		if(!is_string($data)){
			return null;
		}
		 
		$this->setupPubKey();
		 
		$r = openssl_public_encrypt($data, $encrypted, $this->_pubKey);
		if($r)
		{
			return base64_encode($encrypted);
		}
		return null;
	}
	
	
	/**
	 * decrypt with the public key
	 */
	public function pubDecrypt($crypted)
	{
		if(!is_string($crypted))
		{
			return null;
		}
		 
		$this->setupPubKey();
		 
		$crypted = base64_decode($crypted);

		$r = openssl_public_decrypt($crypted, $decrypted, $this->_pubKey);
		if($r)
		{
			return $decrypted;
		}
		return null;
	}
	
	
	public function __destruct()
	{
		@ fclose($this->_privKey);
		@ fclose($this->_pubKey);
	}
}

// 加密文件存放路径
$path = '/home/wanghu/project/test/ssl_key';

$rsa = new Rsa($path);

//创建一对密钥
$rsa->createKey();

/* 私钥加密、公钥解密 */
$privateStr  = 'i am hoh, i come from shanghai!';
echo 'source: ' . $privateStr . '
';

// 生成私钥加密串
$pre = $rsa->privEncrypt($privateStr);
echo 'private encrypted:
' . $pre . '
';

// 使用公钥解密
$pud = $rsa->pubDecrypt($pre);
echo 'public decrypted:' . $pud . '
';

/* 公钥加密、私钥解密 */
$publicStr = 'i am happy, are you happy?';
echo 'public source:' . $publicStr . '
';

// 生成公钥加密字符串
$pubEncrypyStr = $rsa->pubEncrypt($publicStr);
echo 'public encrypted:
' . $pubEncrypyStr . '
';

// 使用私钥解密
$prd = $rsa->privDecrypt($pubEncrypyStr);
echo 'private decrypted:' . $prd . '
';

转载请注明:缘境的博客 » PHP封装ssl非对称加密算法

发表我的评论
取消评论
表情

Hi,您需要填写昵称和邮箱!

  • 昵称 (必填)
  • 邮箱 (必填)
  • 网址