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Updated latest encryption from Offline player (November 2023) #1

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113 changes: 80 additions & 33 deletions PluralCrypt/Encryption/VideoEncryption.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -2,58 +2,105 @@
{
public class VideoEncryption
{
private static bool useV1 = true;
private static int currentClipReadCrypto;

public static void DecryptBuffer(byte[] buff, int length, long position)
private static string string1V2 = "pluralsight";

private static string string2V2 = "#©>Å£Q\u0005¤°";

private const string String1 = "pluralsight";

private const string String2 = "\u0006?zY¢²\u0085\u009fL¾î0Ö.ì\u0017#©>Å£Q\u0005¤°\u00018Þ^\u008eú\u0019Lqß'\u009d\u0003ßE\u009eM\u0080'x:\0~¹\u0001ÿ 4³õ\u0003çÊ\u000eA˼\u0090è\u009eî~\u008b\u009aâ\u001b\u00b8UD<\u007fKç*\u001döæ7H\v\u0015Arý*v÷%Âþ¾ä;pü";

internal static readonly string[][] CryptoKeys = new string[5][]
{
if ((position != 0) || (length <= 3))
new string[2] { "pluralsight", "\u0006?zY¢²\u0085\u009fL¾î0Ö.ì\u0017#©>Å£Q\u0005¤°\u00018Þ^\u008eú\u0019Lqß'\u009d\u0003ßE\u009eM\u0080'x:\0~¹\u0001ÿ 4³õ\u0003çÊ\u000eA˼\u0090è\u009eî~\u008b\u009aâ\u001b\u00b8UD<\u007fKç*\u001döæ7H\v\u0015Arý*v÷%Âþ¾ä;pü" },
new string[2] { String1V2, String2V2 },
new string[1] { "os22$!sKHyy9jnGlgHB&vP21CK96tx!l2uhK1K%Fbubree9%o0wT44zwvJ446iAdA%M!@RopKCmOWMOqTt1*BIw@lF68x3itctw" },
new string[1] { "XlmDvIlD*^uyZAfCMZ%M0h#o6Z7!4eMZZSBs@dZ12%rMvubV#2iFJLfh8@LSyVWhu37#b%z3MCF3u4244%SRMBO@zIG2YEi!i6y" },
new string[1] { "YUg2z3ev2G7WpeqYFf6B2Acw68pJPBgNbJzf39Bs2hZEpGRkGcsoqbNV2GRcfanLgRFG3pE8bp6LjViDryFCxACwuRh2jF2a4CZN" }
};

public static string String1V2
{
get
{
if (useV1)
{
XorBuffer(buff, length, position);
}
else
{
XorBufferV2(buff, length, position);
}
return string1V2;
}
else
set
{
XorBuffer(buff, length, position);
if ((buff[0] == 0) && ((buff[1] == 0) && (buff[2] == 0)))
{
useV1 = true;
}
else
{
XorBuffer(buff, length, position);
XorBufferV2(buff, length, position);
useV1 = false;
}
CryptoKeys[1][0] = value;
string1V2 = value;
}
}

public static void XorBuffer(byte[] buff, int length, long position)
public static string String2V2
{
string str = "pluralsight";
string str2 = "\x0006?zY\x00a2\x00b2\x0085\x009fL\x00be\x00ee0\x00d6.\x00ec\x0017#\x00a9>\x00c5\x00a3Q\x0005\x00a4\x00b0\x00018\x00de^\x008e\x00fa\x0019Lq\x00df'\x009d\x0003\x00dfE\x009eM\x0080'x:\0~\x00b9\x0001\x00ff 4\x00b3\x00f5\x0003\x00c3\x00a7\x00ca\x000eA\x00cb\x00bc\x0090\x00e8\x009e\x00ee~\x008b\x009a\x00e2\x001b\x00b8UD<\x007fK\x00e7*\x001d\x00f6\x00e67H\v\x0015Ar\x00fd*v\x00f7%\x00c2\x00fe\x00be\x00e4;p\x00fc";
for (int i = 0; i < length; i++)
get
{
byte num2 = (byte)((str[(int)((position + i) % ((long)str.Length))] ^ str2[(int)((position + i) % ((long)str2.Length))]) ^ ((position + i) % 0xfbL));
buff[i] = (byte)(buff[i] ^ num2);
return string2V2;
}
set
{
CryptoKeys[1][1] = value;
string2V2 = value;
}
}

public static void XorBufferV2(byte[] buff, int length, long position)
private static void XorBuffer(byte[] buff, int length, long position)
{
XorBuffer(currentClipReadCrypto, buff, length, position);
}

internal static void XorBuffer(int key, byte[] buff, int length, long position)
{
for (int i = 0; i < length; i++)
{
string str = "\0\x00bf{U9\x0001\x00ae`\x00eb\x0013\x00d1[\x001b\x00cf";
string str2 = "\x0002\x008d\a\x0099\x0089\x009a%\x0084K\x00b0s\x00fa\x00c148\x00e4cz@\x009f,\x00ed>\x00f6\x00a02\v\x00df\n@*\x00ed\vz\x008c\x0004\x00bd\x0093\0\x00dce\x00cb\x0086\x001f\b\x00d6\x009e AD\x00d3g&\x00ec\x00b6\x0017\x008d\x00c0\x0014{\x00b5\x00ec\x00df\x0088\x00d8\x009f\x00f2\x00d5\x00c4\x0081p\x00aa\x00aatC\x008a@\x009c2:\x00c5f\\\\\x00ad\x00e8\x009e\x00fd\x0002g\x0003|\x00d8Bf\x0092\x00a0";
byte num2 = (byte)((str[(int)((position + i) % ((long)str.Length))] ^ str2[(int)((position + i) % ((long)str2.Length))]) ^ ((position + i) % 0xfbL));
string[] array = CryptoKeys[key];
string text = array[0];
int num = (int)position + i;
char c = text[num % text.Length];
for (int j = 1; j < array.Length; j++)
{
text = array[j];
c ^= text[num % text.Length];
}

int num2 = c ^ (num % 251);
buff[i] = (byte)(buff[i] ^ num2);
}
}

public static void EncryptBuffer(byte[] buff, int length, long position)
{
XorBuffer(CryptoKeys.Length - 1, buff, length, position);
}

public static void DecryptBuffer(byte[] buff, int length, long position)
{
if (position == 0L)
{
for (int num = CryptoKeys.Length - 1; num >= 0; num--)
{
currentClipReadCrypto = num;
XorBuffer(buff, length, position);
bool flag = buff.Length != 0;
for (int i = 0; i < buff.Length && i < 3; i++)
{
flag = flag && buff[i] == 0;
}

if (flag)
{
return;
}

XorBuffer(buff, length, position);
}
}

XorBuffer(buff, length, position);
}
}
}

2 changes: 1 addition & 1 deletion PluralCrypt/PluralCrypt.csproj
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Original file line number Diff line number Diff line change
Expand Up @@ -5,7 +5,7 @@
<OutputType>WinExe</OutputType>
<GenerateAssemblyInfo>true</GenerateAssemblyInfo>
<UseWindowsForms>true</UseWindowsForms>
<Version>2.0.1</Version>
<Version>2.0.2</Version>
</PropertyGroup>

<PropertyGroup>
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