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# XPKeygen
A Windows XP / Windows Server 2003 VLK key generator. This tool allows you to generate _valid Windows XP keys_ based on the _raw product key_, which can be random.
The **Raw Product Key (RPK)** is supplied in a form of 9 digits `XXX-YYYYYY` and is only necessary to generate a Windows XP Key.
A Windows XP / Windows Server 2003 VLK key generator. This tool allows you to generate _valid Windows XP keys_ based on the _Raw Product Key_, which can be random.
The **Raw Product Key (RPK)** is supplied in form of 9 digits `XXX-YYYYYY` and is only necessary to generate a Windows XP Key.
![image](https://user-images.githubusercontent.com/44542704/231724854-4517f3a1-2330-4e70-83ae-6c52fa1b4745.png)
@ -35,24 +35,22 @@ We need to use a random Raw Product Key as a base to generate a Product ID in a
### Product ID
| Digits | Meaning |
|-------:|:-------------------------------------------------------|
| AAAAA | OS Family constant |
| BBB | Most significant 3 digits of the RPK |
| CCCCCC | Least significant 6 digits of the RPK |
| S | Check digit |
| DD | Index of the public key used to verify the Product Key |
| EEE | Random 3-digit number |
| Digits | Meaning |
|-------:|:----------------------|
| AAAAA | OS Family constant |
| BBB | Channel ID |
| CCCCCC | Sequence Number |
| S | Check digit |
| DD | Public key index |
| EEE | Random 3-digit number |
The OS Family constant `AAAAA` is different for each series of Windows XP. For example, it is 76487 for SP3.
The `BBB` and `CCCCCC` sections essentially directly correspond to the Raw Product Key. If the RPK is `XXXYYYYYY`, these two sections
will transform to `XXX` and `YYYYYY` respectively.
The `BBB` and `CCCCCC` sections essentially encode the Raw Product Key. For example, if the first section is equal to `XXX` and the second section is equal to `YYYYYY`, the Raw Product Key will be encoded as `XXX-YYYYYY`.
The check digit `S` is picked so that the sum of all `C` digits with it added makes a number divisible by 7.
The public key index `DD` lets us know which public key was used to successfully verify the authenticity of our Product Key.
For example, it's 22 for Professional keys and 23 for VLK keys.
For example, it's `22` for Professional keys and `23` for VLK keys.
A random number `EEE` is used to generate a different Installation ID each time.