How to Calculate MEID DEC and P(ESN)

[One Pissed Off Chimp]

For those of you that might be affarid that the calculators will all disapear

The MEID is a string of 14 hexadecimal digits and is comprised of a 56 bit word. The first 8 bits are reserved by TIA, the next 24 bits are the manufacturer identification, and the remaining 24 bits are the unit serial nuraber. To obtain the value of the 56 bit word, one neeRAB to take each string of four bits and convert it to its hexadecimal equivalent. As an Example: 1010 000 100 000 000 000 000 000 000 000 010 010 010 100 101 101 111 0010 =A10000009296F2 (hexadecimal).

The left of the nuraber must be padded with zeros to create enough decimal places to complete the decimal nuraber. The first part will always be 10 digits, and the last part will always be 8 digits.As an example, for hexadecimal MEID=A10000009296F2:
1. Take the first 8 digits and convert them . . . .
2. A1000000 hex is equal to 2701131776 decimal.
3. Take the last 6 digits and convert them . . . .
4. 9296F2 hex is equal to 09606898 decimal (note the padding of 1 zero to the left).
5. Concatenate the first 10 decimal digits in front of the last 8 decimal digits.
6. 270113177609606898 is the 18-digit decimal MEID.

This is how to get you're MEID DEC.

Now for (P)ESN Hex
You will use a Hash Calc.
1. Take A10000009296F2 and paste into you're SHA-1 hash calculator.
2. Calculate the HASH characters in this example A10000009296F2 = 2d0e6efea8f8082c9703cf6636c4a2195c75b7ed
3. Take the last 6 characters and place 80 in front of them = 8075b7ed
4. This is are (P)Esn Hex 0x8075B7ED

So
Binary= 1010 000 100 000 000 000 000 000 000 000 010 010 010 100 101 101 111 0010
MEID Hex = A10000009296F2
MEID Dec = 270113177609606898
P(ESN) Hex = 0x8075B7ED
P(ESN) Dec = 12807714797

[ro/FW-t]

Nice, I was wondering how to do this manually. This helps expand my knowledge, thanks man.

[TallGlass]

Point taken. Just offering what I can. Great post by the way.

[party25uk]

Thanks that wasnt a direct attack towarRAB you, I just wanted to make it more clear..
Thanks for posting the offline calc you should probabbly put the writters name as credit in you're post next time.

[sunshinegurl:))]

Maybe I am retarded or maybe the sha() function in PHP is retarded, but I am not getting the same hash you are. For A10000009296F2 I am getting 4cf522d69e6334472377eed5959dbfaa422005dc, not 2d0e6efea8f8082c9703cf6636c4a2195c75b7ed.


Also, if you plug in A10000009296F2 into this HASH mapper:
Encoder/Decoder

you also get 4cf522d69e6334472377eed5959dbfaa422005dc.


Anyone have any ideas?

Thanks!

[braber5]

hello i tried to reverse the process of Pesn DEC to MEID but i cant go back does anyone know how i can go back ?

[Elibby]

you cannot go from (p)esn to meid

[oana p]

Cool! I've been busy at work and I don't have Internet (or electricity) at home so give me about a week and I'll see if I can write this in PHP for you to host! :buddies:

[[email protected]]

awesome write up.

[♥Miss♥]

DO NOT USE ONLINE CALCS THEY SUCK THEY CANNOT CALCULATE HEX STRING FORMAT TO SHA1 Please quit pming me about this and download a real calc like HashCalc.