，具体如下：

"D:/phpserver/Lighttpd/openssl.cnf",
//'config' =>'D:/phpStudy/Lighttpd/OpenSSL.cnf',
'private_key_bits' => 1024,  // Size of Key.
'private_key_type' => OPENSSL_KEYTYPE_RSA
);
//$res = openssl_pkey_new();
$res = openssl_pkey_new($config);
// Get private key
// openssl_pkey_export($res, $privkey, "PassPhrase number 1" );
openssl_pkey_export($res, $privkey);
var_dump($privkey);
// Get public key
$pubkey=openssl_pkey_get_details($res);
// echo "------------>";
// print_r($pubkey["rsa"]);
// $bin_str=$pubkey["rsa"]["n"];
// print_r($bin_str);
// echo "";
// //echo $bin_hex_str = pack("H*" , bin2hex($bin_str));
// echo $bin_hex_str = bin2hex($bin_str);
// echo "------------<";
 $pubkey=$pubkey["key"];
// var_dump($privkey);
// var_dump($pubkey);
echo $privkey."";
echo $pubkey."";
?>

----------------------";
$data = "woshizhu";//原始数据
$encrypted = ""; 
$decrypted = "";
echo "source data:",$data,"";
echo "private key encrypt:\n";
openssl_private_encrypt($data,$encrypted,$pi_key);//私钥加密
$encrypted = base64_encode($encrypted);//加密后的内容通常含有特殊字符，需要编码转换下，在网络间通过url传输时要注意base64编码是否是url安全的
echo "----------私钥加密------------";
echo $encrypted,"";
echo "----------私钥加密------------";
echo "public key decrypt:\n";
$decrypted="";
openssl_public_decrypt(base64_decode($encrypted),$decrypted,$pu_key);//私钥加密的内容通过公钥可用解密出来
echo $decrypted,"\n";
echo "---------------------------------------\n";
echo "public key encrypt:\n";
openssl_public_encrypt($data,$encrypted,$pu_key);//公钥加密
$encrypted = base64_encode($encrypted);
echo $encrypted,"\n";
$decrypted="";
//$encrypted="JBeapcp9iWWYJYElgqtrZxfxM4wVkCaSn/oJZ7NjfR23o76fdbxEXpf+PGWACw3PeTdObwL4108wR3ihKmy2iYkIExGjBYyvx2w9aHies8ZsOIP3LjiMHYTm93Rr8Sc5XxHWQc3Dhbq16JWHYZ2d+RrOpHd4x84GF3JXwivrGO4=";
echo "private key decrypt:\n";
openssl_private_decrypt(base64_decode($encrypted),$decrypted,$pi_key);//私钥解密
echo "--->:".$decrypted,"\n";
?>