PPVOD云转码视频系统防盗密钥算法，php和.net版

内容UTF-8编码,示例如下：

得出sign密钥需要三个参数：

1：timestamp 是指格林威治时间1970年01月01日00时00分00秒(北京时间1970年01月01日08时00分00秒)起至现在的“毫秒数”

2：ip 是指观看用户的ip地址

3：key 12345678 PPVOD视频管理系统-系统设置-防盗设置-防盗密钥

加密方法：

用key对timestamp和ip进行aes-128-cbc 格式编码，再从二进制编码为 16进制字符串。

固定值测试：

使用’timestamp=402232232323&ip=172.16.7.33′ key：12345678

得出的结果为：

60f118da2eeb040830542e7b2cf9dd38287a5c2c2ff8acc7d16516c1dd71d0c1b95f16c666624942624c01b5ac65d3f7

然后把密钥放m3u8地址后面，如下：

/index.m3u8?sign=60f118da2eeb040830542e7b2cf9dd38287a5c2c2ff8acc7d16516c1dd71d0c1b95f16c666624942624c01b5ac65d3f7

php示范代码：

<?php
$time=time().'000';
$ip=get_real_ip();
$sign=bin2hex(aes128Encrypt('跟软件后台的防盗密钥字符相同',"timestamp=".$time."&ip=".$ip));
function aes128Encrypt($key, $data) {
$padding = 16 - (strlen($data) % 16);
$data=str_pad($data,strlen($data) + 16 - strlen($data) % 16,chr($padding));
$keySize   = 16;
$ivSize    = 16;
$rawKey = $key;
$genKeyData = '';
do
{
$genKeyData = $genKeyData.md5( $genKeyData.$rawKey,true);
} while(
strlen( $genKeyData ) < 32
);
$generatedKey = substr($genKeyData, 0, $keySize );
$generatedIV  = substr($genKeyData, 16, 16);
return openssl_encrypt($data,'aes-128-cbc', $generatedKey, OPENSSL_NO_PADDING, $generatedIV);
}
function get_real_ip(){
$ip=false;
if(!empty($_SERVER["HTTP_CLIENT_IP"])){
$ip = $_SERVER["HTTP_CLIENT_IP"];
}
if (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) {
$ips = explode (", ", $_SERVER['HTTP_X_FORWARDED_FOR']);
if ($ip) { array_unshift($ips, $ip); $ip = FALSE; }
for ($i = 0; $i < count($ips); $i++) {
if (!eregi ("^(10|172\.16|192\.168)\.", $ips[$i])) {
$ip = $ips[$i];
break;
}
}
}
return ($ip ? $ip : $_SERVER['REMOTE_ADDR']);
}
?>

实例代码：

http://域名/日期文件夹/视频文件名/index.m3u8?sign=<?php echo $sign; ?>

应用代码：

<?php
$time=time().'000';
$ip=get_real_ip();
$sign=bin2hex(aes128Encrypt($public_r['add_playkey'],"timestamp=".$time."&ip=".$ip));
function aes128Encrypt($key, $data) {
$padding = 16 - (strlen($data) % 16);
$data=str_pad($data,strlen($data) + 16 - strlen($data) % 16,chr($padding));
$keySize   = 16;
$ivSize    = 16;
$rawKey = $key;
$genKeyData = '';
do
{
$genKeyData = $genKeyData.md5( $genKeyData.$rawKey,true);
} while(
strlen( $genKeyData ) < 32
);
$generatedKey = substr($genKeyData, 0, $keySize );
$generatedIV  = substr($genKeyData, 16, 16);
return openssl_encrypt($data,'aes-128-cbc', $generatedKey, OPENSSL_NO_PADDING, $generatedIV);
}
function get_real_ip(){
$ip=false;
if(!empty($_SERVER["HTTP_CLIENT_IP"])){
$ip = $_SERVER["HTTP_CLIENT_IP"];
}
if (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) {
$ips = explode (", ", $_SERVER['HTTP_X_FORWARDED_FOR']);
if ($ip) { array_unshift($ips, $ip); $ip = FALSE; }
for ($i = 0; $i < count($ips); $i++) {
if (!eregi ("^(10|172\.16|192\.168)\.", $ips[$i])) {
$ip = $ips[$i];
break;
}
}
}
return ($ip ? $ip : $_SERVER['REMOTE_ADDR']);
}
?>
sign=<?php echo $sign; ?>

以下是asp.net算法

private string GetSign()
{
string data = "timestamp=" + ConvertDateTimeInt(DateTime.Now).ToString() + "&ip=" + System.Web.HttpContext.Current.Request.UserHostAddress;
ViewBag.signq = data;
string key = "12345678";
var padding = 16 - (data.Length % 16);
data += new string((char)padding, padding);
var keySize = 16;
var ivSize = 16;
var rawKey = Encoding.Default.GetBytes(key);
MD5 md5 = new MD5CryptoServiceProvider();
byte[] genKeyData = md5.ComputeHash(rawKey);
while (genKeyData.Length < (keySize + ivSize))
{
genKeyData = MergerArray(genKeyData, md5.ComputeHash(MergerArray(genKeyData, rawKey)));
}
var generatedKey = genKeyData.Take(keySize).ToArray();
var generatedIV = genKeyData.Skip(keySize).Take(ivSize).ToArray();
return   ByteToString(AESEncrypt(data, generatedKey, generatedIV));
}
public byte[] MergerArray(byte[] First, byte[] Second)
{
byte[] result = new byte[First.Length + Second.Length];
First.CopyTo(result, 0);
Second.CopyTo(result, First.Length);
return result;
}
public static byte[] AESEncrypt1(String Data, String Key)
{
DESCryptoServiceProvider DES = new DESCryptoServiceProvider();
DES.Key = Encoding.UTF8.GetBytes(Key);
DES.Mode = CipherMode.CBC;
DES.Padding = PaddingMode.Zeros;
ICryptoTransform DESEncrypt = DES.CreateEncryptor();
// System.Text.Encoding
return  Encoding.UTF8.GetBytes(Data);
// return Convert.ToBase64String(DESEncrypt.TransformFinalBlock(Buffer, 0, Buffer.Length));
}
/// <summary>
/// AES加密(无向量)
/// </summary>
/// <param name="plainBytes">被加密的明文</param>
/// <param name="key">密钥</param>
/// <returns>密文</returns>
public static byte[] AESEncrypt(String Data, String Key)
{
MemoryStream mStream = new MemoryStream();
RijndaelManaged aes = new RijndaelManaged();
byte[] plainBytes = Encoding.UTF8.GetBytes(Data);
Byte[] bKey = new Byte[32];
Array.Copy(Encoding.UTF8.GetBytes(Key.PadRight(bKey.Length)), bKey, bKey.Length);
aes.Mode = CipherMode.ECB;
aes.Padding = PaddingMode.PKCS7;
aes.KeySize = 128;
//aes.Key = _key;
aes.Key = bKey;
//aes.IV = _iV;
CryptoStream cryptoStream = new CryptoStream(mStream, aes.CreateEncryptor(), CryptoStreamMode.Write);
try
{
cryptoStream.Write(plainBytes, 0, plainBytes.Length);
cryptoStream.FlushFinalBlock();
return mStream.ToArray();
//return Convert.ToBase64String(mStream.ToArray());
}
finally
{
cryptoStream.Close();
mStream.Close();
aes.Clear();
}
}
/// <summary>
/// 将c# DateTime时间格式转换为Unix时间戳格式
/// </summary>
/// <param name="time">时间</param>
/// <returns>long</returns>
public static long ConvertDateTimeInt(System.DateTime time)
{
//double intResult = 0;
System.DateTime startTime = TimeZone.CurrentTimeZone.ToLocalTime(new System.DateTime(1970, 1, 1, 0, 0, 0, 0));
//intResult = (time- startTime).TotalMilliseconds;
long t = (time.Ticks - startTime.Ticks) / 10000;            //除10000调整为13位
return t;
}
public  string ByteToString(byte[] InBytes)
{
string StringOut = "";
foreach (byte InByte in InBytes)
{
StringOut = StringOut + String.Format("{0:X2} ", InByte).Trim();
}
return StringOut;
}
public string ByteToString1(byte[] InBytes)
{
string StringOut = "";
foreach (byte InByte in InBytes)
{
StringOut = StringOut + (char)InByte;
}
return StringOut;
}
/// <summary>
/// 有密码的AES加密
/// </summary>
/// <param name="text">加密字符</param>
/// <param name="password">加密的密码</param>
/// <param name="iv">密钥</param>
/// <returns></returns>
public static byte[] AESEncrypt(string text, byte[] password, byte[] iv)
{
RijndaelManaged rijndaelCipher = new RijndaelManaged();
rijndaelCipher.Mode = CipherMode.CBC;
rijndaelCipher.Padding = PaddingMode.Zeros;
rijndaelCipher.KeySize = 128;
rijndaelCipher.BlockSize = 128;
byte[] pwdBytes = password;
byte[] keyBytes = new byte[16];
int len = pwdBytes.Length;
if (len > keyBytes.Length) len = keyBytes.Length;
System.Array.Copy(pwdBytes, keyBytes, len);
rijndaelCipher.Key = keyBytes;
byte[] ivBytes =iv;
rijndaelCipher.IV = ivBytes;
ICryptoTransform transform = rijndaelCipher.CreateEncryptor();
byte[] plainText = Encoding.UTF8.GetBytes(text);
byte[] cipherBytes = transform.TransformFinalBlock(plainText, 0, plainText.Length);
return cipherBytes;
}
/// <summary>
/// 随机生成密钥
/// </summary>
/// <returns></returns>
public static string GetIv(int n)
{
char[] arrChar = new char[]{
'a','b','d','c','e','f','g','h','i','j','k','l','m','n','p','r','q','s','t','u','v','w','z','y','x',
'0','1','2','3','4','5','6','7','8','9',
'A','B','C','D','E','F','G','H','I','J','K','L','M','N','Q','P','R','T','S','V','U','W','X','Y','Z'
};
StringBuilder num = new StringBuilder();
Random rnd = new Random(DateTime.Now.Millisecond);
for (int i = 0; i < n; i++)
{
num.Append(arrChar[rnd.Next(0, arrChar.Length)].ToString());
}
return num.ToString();
}
/// <summary>
/// AES解密
/// </summary>
/// <param name="text"></param>
/// <param name="password"></param>
/// <param name="iv"></param>
/// <returns></returns>
public static string AESDecrypt(string text, string password, string iv)
{
RijndaelManaged rijndaelCipher = new RijndaelManaged();
rijndaelCipher.Mode = CipherMode.CBC;
rijndaelCipher.Padding = PaddingMode.PKCS7;
rijndaelCipher.KeySize = 128;
rijndaelCipher.BlockSize = 128;
byte[] encryptedData = Convert.FromBase64String(text);
byte[] pwdBytes = System.Text.Encoding.UTF8.GetBytes(password);
byte[] keyBytes = new byte[16];
int len = pwdBytes.Length;
if (len > keyBytes.Length) len = keyBytes.Length;
System.Array.Copy(pwdBytes, keyBytes, len);
rijndaelCipher.Key = keyBytes;
byte[] ivBytes = System.Text.Encoding.UTF8.GetBytes(iv);
rijndaelCipher.IV = ivBytes;
ICryptoTransform transform = rijndaelCipher.CreateDecryptor();
byte[] plainText = transform.TransformFinalBlock(encryptedData, 0, encryptedData.Length);
return Encoding.UTF8.GetString(plainText);
}

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防盗密钥算法

PPVOD云转码视频系统防盗密钥算法，php和.net版

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