PHP通過OpenSSL生成證書、密鑰并且加密解密數據

關于PHP生成證書密鑰的資料真是好少啊，查了半天，最終還是在官方文檔找到了相關資料，又根據自己的理解，整理成了以下代碼，分成兩部分：生成證書密鑰、加密解密數據。直接復制下來做成兩個文件運行就好啦。已經寫了詳細的注釋，相信PHP程序員都能看得懂。

generate.php

    <?php  
    $dn = array(  
        "countryName" => 'XX', //所在國家名稱  
        "stateOrProvinceName" => 'State', //所在省份名稱  
        "localityName" => 'SomewhereCity', //所在城市名稱  
        "organizationName" => 'MySelf',   //注冊人姓名  
        "organizationalUnitName" => 'Whatever', //組織名稱  
        "commonName" => 'mySelf', //公共名稱  
        "emailAddress" => 'user@domain.com' //郵箱  
    );  

    $privkeypass = '111111'; //私鑰密碼  
    $numberofdays = 365;     //有效時長  
    $cerpath = "./test.cer"; //生成證書路徑  
    $pfxpath = "./test.pfx"; //密鑰文件路徑  


    //生成證書  
    $privkey = openssl_pkey_new();  
    $csr = openssl_csr_new($dn, $privkey);  
    $sscert = openssl_csr_sign($csr, null, $privkey, $numberofdays);  
    openssl_x509_export($sscert, $csrkey); //導出證書$csrkey  
    openssl_pkcs12_export($sscert, $privatekey, $privkey, $privkeypass); //導出密鑰$privatekey  
    //生成證書文件  
    $fp = fopen($cerpath, "w");  
    fwrite($fp, $csrkey);  
    fclose($fp);  
    //生成密鑰文件  
    $fp = fopen($pfxpath, "w");  
    fwrite($fp, $privatekey);  
    fclose($fp);  
    ?>  

    <?php  
    $privkeypass = '111111'; //私鑰密碼  
    $pfxpath = "./test.pfx"; //密鑰文件路徑  
    $priv_key = file_get_contents($pfxpath); //獲取密鑰文件內容  
    $data = "test"; //加密數據測試test  

    //私鑰加密  
    openssl_pkcs12_read($priv_key, $certs, $privkeypass); //讀取公鑰、私鑰  
    $prikeyid = $certs['pkey']; //私鑰  
    openssl_sign($data, $signMsg, $prikeyid,OPENSSL_ALGO_SHA1); //注冊生成加密信息  
    $signMsg = base64_encode($signMsg); //base64轉碼加密信息  


    //公鑰解密  
    $unsignMsg=base64_decode($signMsg);//base64解碼加密信息  
    openssl_pkcs12_read($priv_key, $certs, $privkeypass); //讀取公鑰、私鑰  
    $pubkeyid = $certs['cert']; //公鑰  
    $res = openssl_verify($data, $unsignMsg, $pubkeyid); //驗證  
    echo $res; //輸出驗證結果，1：驗證成功，0：驗證失敗  
    ?>