Math Is Fun Forum

dave.sp

Member

Registered: 2011-02-11

Posts: 3

Hex Code to numbers

Hey.

Anyone can help me on these hex codes?

Hex code no1    1435427F (under this hex code the number is 9127)

Hex code no2    4D0F5F137373 (on this hex code the numbers are 6 digits) can anyone find what is the 6 digit numbers under this hex code???

Thanks

Bob

Administrator

Registered: 2010-06-20

Posts: 10,649

Re: Hex Code to numbers

hi dave.sp

Do you want these converted to decimal?

There is a function in Excel, HEX2DEC that will convert values.

HEX2DEC("1435427F") = 339034751

Unfortunately, it only works up to a maximum of ten hex digits so I had to split off the 4D, convert separately, and then combine using answer x 16^10.

Result = 84728414958451

But, warning, I'm not sure of the accuracy of Excel at this size of number.  Answer looks OK but .....

OR try this.

The column headings (like  units, tens and hundreds ) for hex are  units, 16s, 256s, 4096s etc going up in powers of 16.  So you could compute it this way: 3x1 + 7x16 + 3 x 256 + 7 x 4096 + .....

In case you don't know A=10, B = 11, C = 12, D = 13, E = 14, F = 15.

OR

Hex is used to code colours on computer screens but these numbers look too large for that.

Other codes will depend on the processor and language so you may need to give more details of where you got these from.

Bob

Last edited by Bob (2011-02-11 07:50:45)

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Children are not defined by school ...........The Fonz
You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you!  …………….Bob

dave.sp

Member

Registered: 2011-02-11

Posts: 3

Re: Hex Code to numbers

it's from a hardware machine board,and this machine has 2 codes .

when you put 3 times wrong pass code you have these error hex codes

1435427F this hex i know the pass code is 9127
i want the code from the second hex code 4D0F5F137373

there is a mathematical  formula for the results of the correct code

if someone discover, how from the hex code 1 find the results of 9127 he will find also the code that is under the hex code 2

Bob

Administrator

Registered: 2010-06-20

Posts: 10,649

Re: Hex Code to numbers

hi dave.sp

Arh, sorry.  My post was a million miles from what you wanted.

I don't think you are going to get an answer for this.

(i) Any function is unlikely to be 'solvable' from just one known instance.

(ii)  If there is someone who knows this, they still may not want to tell you, at least until they know what you are trying to hack into.

Sorry. 

Bob

---

Children are not defined by school ...........The Fonz
You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you!  …………….Bob

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Hex Code to numbers

Hi dave.sp;

Bob has raised two good points.

1) Just because you have an input and an output does not mean that you can find the operations in the middle.

2) Why do you want to crack a password? The legitimacy and morality of such an endeavor of course depends on your viewpoint. People do such things all the time but of course they do it on their own without enlisting the help of others. Two good reasons for this,

1) There are no witnesses to the act to testify against them.

2) They do not have to split the prize.

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In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

dave.sp

Member

Registered: 2011-02-11

Posts: 3

Re: Hex Code to numbers

hi guys

the hardware board is belong to me.I'm the owner, i want to make some major changes to my board and i can't do it.
anyway i was just asking if anyone knows.

Thanks for your time

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Hex Code to numbers

Hi;

That still leaves us with problem #1. Let us say that 2 was your input and 4 was your output. Now what happened in the middle? Was it 2 + 2 = 4 or 2*2 = 4 or 2^2 = 4? Makes a big difference for the next input say it is 3.

3 + 3 = 6

3 * 3 = 9

3^3 = 27

Three different answers and this is just a small problem. Imagine for your size numbers.

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.