php 生成加密公钥加密私钥

1.生成公钥私钥     win下必须要openssl.cof支持   liunx一般已自带安装

$config = array(    //"digest_alg" => "sha512",    "private_key_bits" => 512,                     //字节数    512 1024  2048   4096 等    "private_key_type" => OPENSSL_KEYTYPE_RSA,     //加密类型);    //创建公钥和私钥   返回资源$res = openssl_pkey_new($config);//从得到的资源中获取私钥    并把私钥赋给$<span style="font-family: Arial, Helvetica, sans-serif;">privKey</span>openssl_pkey_export($res, $privKey);//<span style="font-family: Arial, Helvetica, sans-serif;">从得到的资源中获取公钥    返回公钥 </span><span style="font-family: Arial, Helvetica, sans-serif;">$pubKey</span><span style="font-family: Arial, Helvetica, sans-serif;"></span>$pubKey = openssl_pkey_get_details($res);$pubKey = $pubKey["key"];

//var_dump($privKey);//var_dump($pubKey);var_dump(array('privKey'=>$privKey,'pubKey'=>$pubKey));die;

2.加密解密数据

$data = 'plaintext data goes here';                         //要加密的数据//对$data进行加密    

//<span style="font-family: Arial, Helvetica, sans-serif;">$data      要加密的数据字符串</span>

//加密返回的结果返回二进制流   可用<span style="font-family: Arial, Helvetica, sans-serif;">base64_encode转存    得到加密后的数据</span>

//$<span style="font-family: Arial, Helvetica, sans-serif;">pubKey   加密所需要的公钥</span>openssl_public_encrypt($data, $encrypted, $pubKey);//echo base64_encode($encrypted);//对加密后的数据进行解密

//<span style="font-family: Arial, Helvetica, sans-serif;">$encrypted     要解密的数据     如果</span><span style="font-family: Arial, Helvetica, sans-serif;">base64_encode转码  必须</span><span style="font-family: Arial, Helvetica, sans-serif;">base64_decode转回来</span>

//<span style="font-family: Arial, Helvetica, sans-serif;">$decrypted    加密后的数据    输入解密后的结果</span>

//<span style="font-family: Arial, Helvetica, sans-serif;">$privKey       $</span><span style="font-family: Arial, Helvetica, sans-serif;">privKey解密多续的私钥</span><span style="font-family: Arial, Helvetica, sans-serif;"></span>openssl_private_decrypt($encrypted, $decrypted, $privKey);echo $decrypted;

</pre><pre name="code" class="php">

3.一个加密解密类

<pre name="code" class="php">class rsa {    private $public_key = ''; //公密钥    private $private_key = ''; //私密钥    private $public_key_resource = ''; //公密钥资源    private $private_key_resource = ''; //私密钥资源    /**     * 架构函数     * @param [string] $public_key_file  [公密钥文件地址]     * @param [string] $private_key_file [私密钥文件地址]     */    public function __construct($public_key_file,$private_key_file) {        try {            if(!file_exists($public_key_file) || !file_exists($private_key_file)) {                throw new Exception('key file no exists');            }            if (false == ($this->public_key = file_get_contents($public_key_file)) || false == ($this->private_key = file_get_contents($private_key_file))) {                throw new Exception('read key file fail');            }            if(false == ($this->public_key_resource = $this->is_bad_public_key($this->public_key)) || false == ($this->private_key_resource = $this->is_bad_private_key($this->private_key))) {                throw new Exception('public key or private key no usable');            }        } catch (Exception $e) {            die($e->getMessage());        }        }    private function is_bad_public_key($public_key) {        return openssl_pkey_get_public($public_key);    }    private function is_bad_private_key($private_key) {        return openssl_pkey_get_private($private_key);    }    /**     * 生成一对公私密钥 成功返回 公私密钥数组 失败 返回 false     */    public function create_key() {        $res = openssl_pkey_new();        if($res == false) return false;        openssl_pkey_export($res, $private_key);        $public_key = openssl_pkey_get_details($res);        return array('public_key'=>$public_key["key"],'private_key'=>$private_key);    }    /**     * 用私密钥加密     */    public function private_encrypt($input) {        openssl_private_encrypt($input,$output,$this->private_key_resource);        return base64_encode($output);    }    /**     * 解密 私密钥加密后的密文     */    public function public_decrypt($input) {        openssl_public_decrypt(base64_decode($input),$output,$this->public_key_resource);        return $output;    }    /**     * 用公密钥加密     */    public function public_encrypt($input) {        openssl_public_encrypt($input,$output,$this->public_key_resource);        return base64_encode($output);    }    /**     * 解密 公密钥加密后的密文     */    public function private_decrypt($input) {        openssl_private_decrypt(base64_decode($input),$output,$this->private_key_resource);        return $output;    }}//$rsa = new rsa('public_key.txt','private_key.txt');////$str = '加密解密';//$str = $rsa->public_encrypt($str); //用公密钥加密//echo $str,'</br>';//$str = $rsa->private_decrypt($str); //用私密钥解密//echo $str,'</br>';////=============================================================//$str = $rsa->private_encrypt($str); //用丝密钥加密//echo $str,'</br>';//$str = $rsa->public_decrypt($str); //用公密钥解密//echo $str,'</br>';

4.附

<pre name="code" class="php">//$private_key = '-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----';//$public_key = '-----BEGIN PUBLIC KEY-----//MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC3//sR2tXw0wrC2DySx8vNGlqt//3Y7ldU9+LBLI6e1KS5lfc5jlTGF7KBTSkCHBM3ouEHWqp1ZJ85iJe59aF5gIB2kl//Bd6h4wrbbHA2XE1sq21ykja/Gqx7/IRia3zQfxGv/qEkyGOx+XALVoOlZqDwh76o//2n1vP1D+tD3amHsK7QIDAQAB//-----END PUBLIC KEY-----';//file_put_contents('public_key.txt', $public_key);//file_put_contents('private_key.txt', $private_key);