Windows XP product key

[Maxwellg18]

i was wondring if there was a way to get window xp product key with out installing a progam like Rock xp or anything like that

what i can't do as this being a poject of mine to test my skills

install programs

must be gotten from the reg

i can't not say "it can't be done"

basiclly what i'm asking if anyone know how to decrypt the windows product key from the reg and if you know where to look.

unfortally i'm on vista ATM so i can't go messing around

[galileo]

google: produkey

[Maxwellg18]

google: produkey

everything says to use a program

[cluberti]

If you don't mind writing a bit of code, it can be done easily with C#. It's stored in the registry as a DigitalProductID value under HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\Windows NT\CurrentVersion\, but it's not clear-text anymore, it's encrypted. You'll need to write some code, or use someone else's application code that's already written.

[Maxwellg18]

If you don't mind writing a bit of code, it can be done easily with C#. It's stored in the registry as a DigitalProductID value under HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\Windows NT\CurrentVersion\, but it's not clear-text anymore, it's encrypted. You'll need to write some code, or use someone else's application code that's already written.

thanks now that i knw where to look i now need to figer out how to decrypt the key... or figer out the math

Edit Btw that is soome good information want its saying is to make a program that will decode for me i wanna figer out by my self

Edited January 25, 2008 by Maxwellg18

[Maxwellg18]

ok i found this but i still confused a lots can someone plz explaain what this means

The Raw Product Key is buried inside the Product Key that is printed

on the sticker distributed with each Windows XP CD. It consists of

five alphanumeric strings separated by '-' characters, where each

string is composed of five characters, as in

FFFFF-GGGGG-HHHHH-JJJJJ-KKKKK

Each character is one of the following 24 letters and digits:

B C D F G H J K M P Q R T V W X Y 2 3 4 6 7 8 9

Very similar to the decimal encoding of the Installation ID the 25

characters of the Product Key form a base-24 encoding of the binary

representation of the Product Key. Decoding the Product Key yields a

multi-precision integer of roughly 115 bits, which is stored - again

in little endian byte order - in an array of 15 bytes. Decoding the

above Product Key results in the following byte sequence.

0x6F 0xFA 0x95 0x45 0xFC 0x75 0xB5 0x52

0xBB 0xEF 0xB1 0x17 0xDA 0xCD 0x00

Of these 15 bytes the least significant four bytes contain the Raw

Product Key in little endian byte order. The least significant bit is

removed by shifting this 32-bit value (0x4595FA6F - remember the

little endian byte order) to the left by one bit position, resulting

in a Raw Product Key of 0x22CAFD37, or

583728439

in decimal notation.

The eleven remaining bytes form a digital signature, allowing

verification of the authenticity of the Product Key by means of a

hard-coded public key.