Editing Product key (section)

==== Product ID ====
The Product ID consists of five groups of decimal digits, as in AAAAA-BBB-CCCCCCC-DDEEE. 

===== Decoding =====
The mapping between the Product ID in decimal representation and its binary encoding in the double words P1 and P2 and the byte P3 is summarized in the following table.
{| class="wikitable"
|+
!Digits
!Length
!Encoding
!Meaning
|-
|AAAAA
|17 Bits
|Bit 0 to bit 16 of P1
|Always 55034 (in Windows XP RC1)
|-
|BBB
|10 Bits
|Bit 17 to bit 26 of P1
|Most significant three digits of Raw Product Key
|-
|CCCCCCC
|28 Bits
|Bit 27 to bit 31 of P1 (lower 5 bits) and Bit 0 to bit 22 of P2 (upper 23 bits)
|Least significant six digits of Raw Product Key and check digit
|-
|DDEEE
|17 Bits
|Bit 23 to bit 31 of P2 (lower 9 bits) and Bit 0 to bit 7 of P3 (upper 8 bits)
|DD = Index of the public key used to verify the Product key
EEE = Random value
|}