首页 / PHP / PHP 视频源文件加密方案
PHP 视频源文件加密方案
内容导读
互联网集市收集整理的这篇技术教程文章主要介绍了PHP 视频源文件加密方案，小编现在分享给大家，供广大互联网技能从业者学习和参考。文章包含4747字，纯文字阅读大概需要7分钟。
内容图文
先说下原理：因为视频是付费的，肯定需要作视频加密处理。
加密可实现的方式：修改视频字节流，只能替换字节流，例如头100-1024字节进行加密，源文件就无法打开了。
下面上代码吧，加解密是
openssl_encrypt
openssl_decrypt
<?php
/**
*
* Created by PhpStorm.
* User: js
* Date: 2021/04/15
* Time: 17:03
* PhpStorm
*/
namespace CoreModel\Payfilms;
class Movie{
const KEY = 'jiangsheng';
const METHOD = 'des-ecb';
static function movieModify($filename){
$strLong = mt_rand(1,9);
$str = self::randStr($strLong); // 字符串占位
$key = self::randStr(6); // key
$Pkey = base64_encode($key);
$fp = fopen($filename, 'r+') or die('文件打开失败！');
$bin = fread($fp, $strLong); //随机
$passStr = self::_encrypt($bin,$key); // 密文头 转存
// 判断是否是小写字母组成
$i = 0;
while (!feof($fp)) {
//修改第二行数据
if ($i == 0) {
fseek($fp, 0);// 移动文件指针至偏移量处
fwrite($fp, $str);
break;
}
fgets($fp);
$i++;
}
fclose($fp);
return [
'key'=>$key,
'Pkey'=>$Pkey,
'passStr'=>$passStr,
'str'=>$str,
'bin'=>$bin
];
}
static function movieReduction($filename, $passStr, $Pkey){
$fp = fopen($filename, 'r+') or die('文件打开失败！');
$key = base64_decode($Pkey);
$str = self::_decrypt($passStr,$key);
$i = 0;
while (!feof($fp)) {
//修改第二行数据
if ($i == 0) {
fseek($fp, 0);// 移动文件指针至偏移量处
fwrite($fp,$str);
break;
}
fgets($fp);
$i++;
}
fclose($fp);
return true;
}
static function handOpen($filename){
$fp = fopen($filename, 'r') or die('文件打开失败！');
$content = fread($fp, filesize($filename));
return $content;
}
static function _encrypt($data, $key=self::KEY, $method=self::METHOD){
return openssl_encrypt($data, $method, $key);
}
static function _decrypt($data, $key=self::KEY, $method=self::METHOD){
return openssl_decrypt($data, $method, $key);
}
static function authcode($string,$key='',$operation=false,$expiry=0){
$ckey_length = 4;
$key = md5($key ? $key : self::KEY);
$keya = md5(substr($key, 0, 16));
$keyb = md5(substr($key, 16, 16));
$keyc = $ckey_length ? ($operation? substr($string, 0, $ckey_length):substr(md5(microtime()), -$ckey_length)) : '';
$cryptkey = $keya.md5($keya.$keyc);
$key_length = strlen($cryptkey);
$string = $operation? base64_decode(substr($string, $ckey_length)) :
sprintf('%010d', $expiry ? $expiry + time() : 0).substr(md5($string.$keyb), 0, 16).$string;
$string_length = strlen($string);
$result = '';
$box = range(0, 255);
$rndkey = array();
for($i = 0; $i <= 255; $i++) {
$rndkey[$i] = ord($cryptkey[$i % $key_length]);
}
for($j = $i = 0; $i < 256; $i++) {
$j = ($j + $box[$i] + $rndkey[$i]) % 256;
$tmp = $box[$i];
$box[$i] = $box[$j];
$box[$j] = $tmp;
}
for($a = $j = $i = 0; $i < $string_length; $i++) {
$a = ($a + 1) % 256;
$j = ($j + $box[$a]) % 256;
$tmp = $box[$a];
$box[$a] = $box[$j];
$box[$j] = $tmp;
$result .= chr(ord($string[$i]) ^ ($box[($box[$a] + $box[$j]) % 256]));
}
if($operation) {
if((substr($result, 0, 10) == 0 || substr($result, 0, 10) - time() > 0) &&
substr($result, 10, 16) == substr(md5(substr($result, 26).$keyb), 0, 16)) {
return substr($result, 26);
} else {
return '';
}
} else {
return $keyc.str_replace('=', '', base64_encode($result));
}
}
static function randStr($randLength = 6, $addtime = 0, $includenumber = 0)
{
if ($includenumber) {
$chars = 'abcdefghijklmnopqrstuvwxyzABCDEFGHJKLMNPQEST123456789';
} else {
$chars = 'abcdefghijklmnopqrstuvwxyz';
}
$len = strlen($chars);
$randStr = '';
for ($i = 0; $i < $randLength; $i++) {
$randStr .= $chars[mt_rand(0, $len - 1)];
}
$tokenvalue = $randStr;
if ($addtime) {
$tokenvalue = $randStr . time();
}
return $tokenvalue;
}
}
// 批量加密
function index(){
ini_set('max_execution_time', 0);//秒为单位，自己根据需要定义
set_time_limit(0);
// $code = $this->arguments['code'];
// $sta = $this->arguments['sta'];
// $end = $this->arguments['end'];
// var_dump($code,$sta,$end);
// echo $res = Movies::_encrypt('123');
// echo $res = Movies::_decrypt($res);
$moviePath = FCPATH.'movie'.DIRECTORY_SEPARATOR; // 视频目录
$data = [
['ID'=>1,'VideoFile'=>'huzongdieying.zip'],
['ID'=>2,'VideoFile'=>'27000084-bstg.mp4']
];
$obj = new FilmFiles();
foreach($data as $key=>$val){
$filePath = $moviePath.$val['VideoFile'];
$res = Movies::movieModify($filePath);
if($res){
$where = ['ID'=>$val['ID']];
$info = [
'EncryptType'=>3,
'SecretKey'=>$res['Pkey'],
'SecretEncrypt'=>$res['passStr']
];
$sta = $obj->updateLine($where,$info);
var_dump($res,$sta);
}
}
}
// 批量解密
function indexOut(){
ini_set('max_execution_time', 0);//秒为单位，自己根据需要定义
set_time_limit(0);
$moviePath = FCPATH.'movie'.DIRECTORY_SEPARATOR;
$data = [
['ID'=>1,'VideoFile'=>'a.mkv'],
['ID'=>2,'VideoFile'=>'b.mkv']
];
$obj = new FilmFiles();
$where = ['ID'=>1,'ID'=>2];
$data = $obj->getList();
foreach($data as $val){
$filePath = $moviePath.$val->VideoFile;
$res = Movies::movieReduction($filePath, $val->SecretEncrypt, $val->SecretKey);
if($res){
$where = ['ID'=>$val->ID];
$info = [
'EncryptType'=>0,
'SecretKey'=>'',
'SecretEncrypt'=>''
];
$sta = $obj->updateLine($where,$info);
var_dump($res,$sta);
}
}
}
内容总结
以上是互联网集市为您收集整理的PHP 视频源文件加密方案全部内容，希望文章能够帮你解决PHP 视频源文件加密方案所遇到的程序开发问题。 如果觉得互联网集市技术教程内容还不错，欢迎将互联网集市网站推荐给程序员好友。
内容备注
版权声明：本文内容由互联网用户自发贡献，该文观点与技术仅代表作者本人。本站仅提供信息存储空间服务，不拥有所有权，不承担相关法律责任。如发现本站有涉嫌侵权/违法违规的内容， 请发送邮件至 gblab@vip.qq.com 举报，一经查实，本站将立刻删除。
内容手机端
扫描二维码推送至手机访问。
来源：【匿名】