Math Is Fun Forum

ramsus

Member

Registered: 2010-11-12

Posts: 1

Random numbers or precalculated algorithm?

We've got 3 samples with that informations:
ID, bar code, numeric code, verify code.
Is possible to reverse/find numeric code and/or verify code knowing only ID and Bar code?

There are the samples:
ID: 13
BAR CODE: 1002-0334551-013
NUMERIC CODE: 64848837696
VERIFY CODE: 255

ID: 14
BAR CODE: 1002-0334551-014
NUMERIC CODE: 90871140703
VERIFY CODE: 989

ID 15
BAR CODE: 1002-0334551-015
NUMERIC CODE: 34590865027
VERIFY CODE: 103

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Random numbers or precalculated algorithm?

Hi ramsus;

Welcome to the forum. Without going into the possible ethic or legal problems of cracking that, let me say it is not likely given only 3 examples.

That is not a plea for you to get more examples. Also the dragon mentions another problem on the other forum you posted.

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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.