Rsa 加密和解密

<?php

namespace Rsa;

use Rsa\XRsa;

if (!function_exists('url_safe_base64_encode')) {

    function url_safe_base64_encode($data) {
        $data = base64_encode($data);
        // $data = str_replace(array('+', '/', '='), array('-', '_', ''), $data);
        return $data;
    }

}

if (!function_exists('url_safe_base64_decode')) {

    function url_safe_base64_decode($data) {
        $data = str_replace(array('-', '_'), array('+', '/'), $data);
        $mod4 = strlen($data) % 4;
        if ($mod4) {
            $data .= substr('====', $mod4);
        }
        return base64_decode($data);
    }

}

/**
 *
 * Rsa 加密和解密
 */
class XRsa {

    const CHAR_SET = "UTF-8";
    const RSA_ALGORITHM_KEY_TYPE = OPENSSL_KEYTYPE_RSA;
    const RSA_ALGORITHM_SIGN = OPENSSL_ALGO_SHA1;

    protected $public_key;
    protected $private_key;
    protected $key_len;

    public function __construct($pub_key, $pri_key = null) {
        $this->public_key = $pub_key;
        $this->private_key = $pri_key;

        $pub_id = openssl_get_publickey($this->public_key);
        $this->key_len = openssl_pkey_get_details($pub_id)['bits'];
    }

    /*
     * 创建密钥对
     */

    public static function createKeys($key_size = 2048) {
        $config = array(
            "private_key_bits" => $key_size,
            "private_key_type" => self::RSA_ALGORITHM_KEY_TYPE,
        );
        $res = openssl_pkey_new($config);
        openssl_pkey_export($res, $private_key);
        $public_key_detail = openssl_pkey_get_details($res);
        $public_key = $public_key_detail["key"];

        return [
            "public_key" => $public_key,
            "private_key" => $private_key,
        ];
    }

    /*
     * 公钥加密
     */

    public function publicEncrypt($data) {
        $encrypted = '';
        $part_len = $this->key_len / 8 - 11;
        $parts = str_split($data, $part_len);
        foreach ($parts as $part) {
            $encrypted_temp = '';
            openssl_public_encrypt($part, $encrypted_temp, $this->public_key);
            $encrypted .= $encrypted_temp;
        }
        $encrypted = url_safe_base64_encode($encrypted);
        return $encrypted;
    }

    /*
     * 公钥加密
     */

    public function publicEncrypt2($data) {
        openssl_public_encrypt($data, $encrypted, $this->public_key);
        $encrypted = url_safe_base64_encode($encrypted);
        return $encrypted;
    }

    /*
     * 私钥解密
     */

    public function privateDecrypt($encrypted) {
        $decrypted = "";
        $part_len = $this->key_len / 8;
        $base64_decoded = url_safe_base64_decode($encrypted);
        $parts = str_split($base64_decoded, $part_len);
        foreach ($parts as $part) {
            $decrypted_temp = '';
            openssl_private_decrypt($part, $decrypted_temp, $this->private_key);
            $decrypted .= $decrypted_temp;
        }
        return $decrypted;
    }


    /*
     * 私钥加密
     */
    public function privateEncrypt($data) {
        $encrypted = '';
        $part_len = $this->key_len / 8 - 11;
        $parts = str_split($data, $part_len);
        foreach ($parts as $part) {
            $encrypted_temp = '';
            openssl_private_encrypt($part, $encrypted_temp, $this->private_key);
            $encrypted .= $encrypted_temp;
        }
        return url_safe_base64_encode($encrypted);
    }

    /*
     * 私钥加密
     */

    private function privateEncrypt2($data) {
        openssl_private_encrypt($data, $encrypted, $this->private_key);
        $encrypted = base64_encode($encrypted);
        return $encrypted;
    }

    /*
     * 公钥解密
     */

    public function publicDecrypt($encrypted) {
        $decrypted = "";
        $part_len = $this->key_len / 8;
        $base64_decoded = url_safe_base64_decode($encrypted);
        $parts = str_split($base64_decoded, $part_len);
        foreach ($parts as $part) {
            $decrypted_temp = '';
            openssl_public_decrypt($part, $decrypted_temp, $this->public_key);
            $decrypted .= $decrypted_temp;
        }
        return $decrypted;
    }

    /*
     * 数据加签
     */

    public function sign($data) {
        openssl_sign($data, $sign, $this->private_key, self::RSA_ALGORITHM_SIGN);
        return url_safe_base64_encode($sign);
    }

    /*
     * 数据签名验证
     */

    public function verify($data, $sign) {
        $pub_id = openssl_get_publickey($this->public_key);
        $res = openssl_verify($data, url_safe_base64_decode($sign), $pub_id, self::RSA_ALGORITHM_SIGN);
        openssl_free_key($pub_id);
        return $res;
    }

}

调用案例:

 #声明rsa实例化   
 public function __construct() {
        $this->rsa = new XRsa($this->pub_key, $this->pri_key);
    }

    /*
     * 报文签名
     */

    private function get_sign($param = array()) {
        $arg = "channelCode=" . $param['channelCode'] . "&";
        $arg .= "data=" . $param['data'] . "&";
        $arg .= "timeStamp=" . $param['timeStamp'] . "&";
        $arg .= "serviceName=" . $param['serviceName'];
        $arg = $this->rsa->sign($arg);
        return $arg;
    }

   //构建数组
    public function getInsuranceFiles_test() {
        $data = '{"idCardType":"CER","idCardNumber":"440722196908030521","customerName":"黄丽珠"}';
        $timeStamp = time();
        //私钥加密
        $data = $this->rsa->privateEncrypt($data);
        $param['channelCode'] = "CCB";
        $param['serviceName'] = "getInsuranceFiles";
        $param['timeStamp'] = (string) $timeStamp;
        $param['data'] = $data;
        //加签名
        $sign = $this->get_sign($param);
        $param['sign'] = $sign;
        $r = json_encode($param);
        $r = trim(str_replace("null", '""', $r), "\n");
        echo $r;
        exit();
    }

{"channelCode":"CCB","serviceName":"getInsuranceFiles","timeStamp":"1586244470","data":"NrOo1SwFzdqle33VaPloAAXiu7kBNmTy5kzVAKoh5kHMVyqkQ04RxI5bF7mFZ6TViNCwUOkNINrQxPfnWXeAGclSN4j0Iy6E\/TJ4hCQpL8UjFgicgSW7LtuRUFfU0sSy5lRieq96XimCPLpv+Wo3yTdfIpCKmzerDBJKrFczhr\/biqwSay16d1k6c5rzbLT2535lk1VitNIm+xm9MaEz\/fFEqx54UOpJ4zFaxYOVLwkjTY0E9mrShm0O\/aLv3T2SrgUlfizxRJ9Rcg1bJzeg+41YVM9w9KFQwiDSE1IQol390bC1PWnN68Ui6hcKSbuyKfzJ2BoVxB+NGrGxB\/\/uwg==","sign":"Unoee2wiV+raS9u2tDpYBpAA02jkpOB5Edzod96I\/2S7PVwBjqH6+fQCzEORy063OHGrCfbtcWA5uwKGsNf3a4hBjFFS7y0HK5RXcfUmG\/sUzFF6Jh9TOhthOyytBAbl\/jwAhQ3v4\/4cFaFDGSOE91yA9j0Eild4KtLGrQudkxaveXWG6NoA5G7CX\/CKTmFryFIQcN\/xOdjv3LLATGNJr1kQLvGOjgbxVuwEJ137LpuIo6xlA2G5YqpfXbBLHw\/bH1R+LUtDGsfb+K7Kox8872rZEn\/NXM\/NpxiJ+ptUpAaPH\/Upnqg7kYPCPrQZfYujPx77GgYkLml\/wS1ym9bdCw=="}