1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
| function Get-WindowsProductKey{
\
$OSVersion = [System.Environment]::OSVersion.Version ($OSVersion.Major -eq 6 -and $OSVersion.Minor -lt 2) -or $OSVersion.Major -le 6 }
\
using System;
using System.Collections;
public static class Decoder
{
public static string DecodeProductKeyWin7(byte[] digitalProductId)
{
const int keyStartIndex = 52;
const int keyEndIndex = keyStartIndex + 15;
var digits = new[]
{
'B', 'C', 'D', 'F', 'G', 'H', 'J', 'K', 'M', 'P', 'Q', 'R',
'T', 'V', 'W', 'X', 'Y', '2', '3', '4', '6', '7', '8', '9',
};
const int decodeLength = 29;
const int decodeStringLength = 15;
var decodedChars = new char[decodeLength];
var hexPid = new ArrayList();
for (var i = keyStartIndex; i <= keyEndIndex; i++)
{
hexPid.Add(digitalProductId[i]);
}
for (var i = decodeLength - 1; i >= 0; i--)
{
// Every sixth char is a separator.
if ((i + 1) % 6 == 0)
{
decodedChars[i] = '-';
}
else
{
// Do the actual decoding.
var digitMapIndex = 0;
for (var j = decodeStringLength - 1; j >= 0; j--)
{
var byteValue = (digitMapIndex << 8) | (byte)hexPid[j];
hexPid[j] = (byte)(byteValue / 24);
digitMapIndex = byteValue % 24;
decodedChars[i] = digits[digitMapIndex];
}
}
}
return new string(decodedChars);
}
public static string DecodeProductKey(byte[] digitalProductId)
{
var key = String.Empty;
const int keyOffset = 52;
var isWin8 = (byte)((digitalProductId[66] / 6) & 1);
digitalProductId[66] = (byte)((digitalProductId[66] & 0xf7) | (isWin8 & 2) * 4);
const string digits = "BCDFGHJKMPQRTVWXY2346789";
var last = 0;
for (var i = 24; i >= 0; i--)
{
var current = 0;
for (var j = 14; j >= 0; j--)
{
current = current*256;
current = digitalProductId[j + keyOffset] + current;
digitalProductId[j + keyOffset] = (byte)(current/24);
current = current%24;
last = current;
}
key = digits[current] + key;
}
var keypart1 = key.Substring(1, last);
var keypart2 = key.Substring(last + 1, key.Length - (last + 1));
key = keypart1 + "N" + keypart2;
for (var i = 5; i < key.Length; i += 6)
{
key = key.Insert(i, "-");
}
return key;
}
}'@ \# compile C# Add-Type -TypeDefinition $code
\# get raw product key $digitalId = (Get-ItemProperty -Path 'HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion' -Name DigitalProductId).DigitalProductId
$isWin7 = Test-Win7 if ($isWin7)
{
\# use static C# method [Decoder]::DecodeProductKeyWin7($digitalId)
}
else {
\# use static C# method: [Decoder]::DecodeProductKey($digitalId)
}
}
|