$dn = array(  "countryName" => 'XX', //所在国家名称  "stateOrProvinceName" => 'State', //所在省份名称  "localityName" => 'SomewhereCity', //所在城市名称  "organizationName" => 'MySelf',   //注册人姓名  "organizationalUnitName" => 'Whatever', //组织名称  "commonName" => 'mySelf', //公共名称  "emailAddress" => 'user@domain.com' //邮箱
);  $privkeypass = '111111'; //私钥密码  $numberofdays = 365;     //有效时长  $cerpath = "./test.cer"; //生成证书路径  $pfxpath = "./test.pfx"; //密钥文件路径  //生成证书  $privkey = openssl_pkey_new(); $csr = openssl_csr_new($dn, $privkey);  $sscert = openssl_csr_sign($csr, null, $privkey, $numberofdays);  openssl_x509_export_to_file($sscert, $cerpath); //导出证书到文件openssl_pkcs12_export_to_file($sscert, $pfxpath, $privkey, $privkeypass); //生成密钥文件  

   //私钥加密$cer_key = file_get_contents($pfxpath); //获取密钥内容openssl_pkcs12_read($cer_key, $certs, $privkeypass);openssl_sign($data, $signMsg, $certs['pkey'],OPENSSL_ALGO_SHA1); //注册生成加密信息$signMsg = base64_encode($signMsg); //base64转码加密信息echo $signMsg;//公钥解密$cer_key = file_get_contents($cerpath); //获取证书内容$unsignMsg=base64_decode($signMsg);//base64解码加密信息$cer = openssl_x509_read($cer_key); //读取公钥$res = openssl_verify($data, $unsignMsg, $cer); //验证echo $res; //输出验证结果，1：验证成功，0：验证失败

class RsaCrypt {const PRIVATE_KEY_FILE_PATH = './rsa_private_key.pem';const PUBLIC_KEY_FILE_PATH = './rsa_public_key.pem';public static function encode($orignData) {//密钥文件的路径$privateKeyFilePath = self::PRIVATE_KEY_FILE_PATH;extension_loaded('openssl') or die('php需要openssl扩展支持');(file_exists($privateKeyFilePath)) or die('密钥的文件路径不正确');//生成Resource类型的密钥，如果密钥文件内容被破坏，openssl_pkey_get_private函数返回false$privateKey = openssl_pkey_get_private(file_get_contents($privateKeyFilePath));($privateKey) or die('密钥不可用');//加密以后的数据，用于在网路上传输$encryptData = '';///用私钥加密if (openssl_private_encrypt($orignData, $encryptData, $privateKey)) {return $encryptData;} else {die('加密失败');}}public static function decode($encryptData) {//公钥文件的路径$publicKeyFilePath = self::PUBLIC_KEY_FILE_PATH;extension_loaded('openssl') or die('php需要openssl扩展支持');(file_exists($publicKeyFilePath)) or die('公钥的文件路径不正确');//生成Resource类型的公钥，如果公钥文件内容被破坏，openssl_pkey_get_public函数返回false$publicKey = openssl_pkey_get_public(file_get_contents($publicKeyFilePath));($publicKey) or die('公钥不可用');//解密以后的数据$decryptData = '';///用公钥解密if (openssl_public_decrypt($encryptData, $decryptData, $publicKey)) {return $decryptData;} else {die('解密失败');}}
}