Java program to validate an unencrypted credit card track data

Anonymous
timer Asked: Feb 4th, 2019
account_balance_wallet $50

Question Description

The current version of the Point of Sale (PoS) system does not require cardholder data to be encrypted when they are saved in non-persistent memory (e.g. RAM). This design flaw, unfortunately, allows attackers to install malware on a PoS system to steal the credit card information of cardholders. In 2005, “Target Corp. was hit by an extensive theft of its customers' credit-card and debit-card data over the busy Black Friday weekend.


In this assignment, you are asked to implement a Java program to validate if a Point of Sale (PoS) system has unencrypted credit card track I data in memory. A sample memory data of a PoS system is provided on the course webpage, called memorydump.dmp. Although the memory data can be obtained via existing memory dump tools, this sample file is hand-made. A sample output of your program may look like:


There is 1 track I record in the memory data

<Information of the 1st record >

Cardholder’s Name: Binhai Zhu

Card Number: 4128 1234 1234 1234

Expiration Date: 09/2015

CVC Number: 101



****************************************************************************************************************************

memorydump.dmp


%B1234123412341234^Cardsfd43654356235454631254656435135464543654361254656435135464543513546546;1234123412341234=1405101193010877?00000?;1234123412340ohn^235454631123%B4128123412341234^Binhai/Zhu^150910100000019301000000877000000?;4128123412341234=000?;1234123412341fdwei000dfg00?;12341%B123412341234235454631254656435135464543513546546;1234123412^341246101193010877?00000?;1234123412340000?;123412341dfggadsfi;1234123412341234=1405101193010877?00000?;1234123412340dfg;1234123412341fdwei1405101235649855189454556435135464543513546546;1234123412341234=1405101193010877?00000?;1234123412340000?;123412sfddi000000000000?;1234^234=1405101193010877?00000?;123412341234000dfg12^3412341234sfdeif^123545466;12341234365hn^2354546311234123ohn^235454631254656435135464543513546546;1234123412341234=1405101193010877?00000?;123412341234000451234123412341fdwei14051012354546312546^11193010877?00000?;1234123412340000?;1234123412341fdwei;1234123412341354645434656435135464543513546546;1234123412341234=1405101193010877?00000?;1234123414635000dfg;1234123412341fdweif^123545466;123412341231509104123ohn^235454631254656435135464543513546546;1234123412341234=1405101193010877?

%B41281234123Yang9301000000877000000?;4128123412341293010877?%B4128123412341234^Binhai/0000877000000?;4128123412341234=1509101193010877?000?;1234123412341fdwei000dfg00?;12341%B123412341234235454631254656435135464543513546546;1234123412^341246101193010877?00000?;1234123412340000?;123412341dfggadsfi;1234123412341234=1405101193010877?00000?;1234123412340dfg;1234123412341fdwei1405101235649855189454556435135464543513546546;1234123412341234=1405101193010877?00000?;1234123412340000?;123412sfddi000000000000?;1234^234=1405101193010877?00000?;123412341234000dfg12^3412341234sfdeif^123545466;12341234365hn^2354546311234123ohn^235454631254656435135464543513546546;1234123412341234=1405101193010877?00000?;123412341234000451234123412341fdwei14051012354546312546^11193010877?00000?;1234123412340000?;1234123412341fdwei;1234123412341354645434656435135464543513546546;1234123412341234=1405101193010877?00000?;1234123414635000dfg;1234123412341fdweif^123545466;1234123412346;1234123412^341246101193010877?00000?;1234123412340000?;123412341dfggadsfi;1234123412341234=1405101193010877?00000?;1234123412340dfg;1234123412341fdwei1405101235649855189454556435135464543513546546;1234123412341234=1405101193010877?00000?;1234123412340000?;123412sfddi000000000000?;1234^234=1405101193010877?00000?;123412341234000dfg12^3412341234sfdeif^123545466;12341234365hn^23534=1405101193010877?00000?;123412341234000dfg12^3412341234sfdeif^123545466;12341234365hn^2354546311234123ohn^235454631254656435135464543513546546;1234123412341234=1405101193010877?00000?;123412341234000451234123412341fdwei14051012354546312546^11193010877?00000?;1234123412340000?;1234123412341fdwei;1234123412341354645434656435135464543513546546;1234123412341234=1405101193010877?00000?;1234123414635000dfg;1234123412341fdweif^123545466;1234123455189454556435135464543513546546;1234123412341234=1405101193010877?00000?;1234123412340000?;123412sfddi000000000000?;1234^234=1405101193010877?00000?;123412341234000dfg12^3412341234sfdeif^123545466;12341234365hn^23534=1405101193010877?00000?;123412341234000dfg12^3412341234sfdeif^123545466;123412sfddi000000000000?;1234^234=1405101193010877?00000?;123412341234000dfg12^3412341234sfdeif^123545466;12341234365hn^2354546311234123ohn^235454631254656435135464543513546546;1234123412341234=1405101193010877?00000?;123412341234000451234123412341fdwei14051012354546312546^11193010877?00000?;1234123412340000?;1234123412341fdwei;1234123412341354645434656435135464543513546546;1234123412341234=1405101193010877?00000?;1234123414635000dfg;1234123412341fdweif^123545466;1234123412346;1234123412^341246101193010877?00000?;1234123412340000?;123412341dfggadsfi;1234123412341234=1405101193010877?00000?;1234123412340dfg;1234123412341fdwei1454546312546^11193010877?00000?;1234123412340000?;1234123412%B4128123412341235^Paxton/John^181213100000019301000000877000000?;4128123412341234=1509101193010877?341fdwei;1234123412341354645434656435135464543513546546;1234123412341234=1405101193010877?00000?;1234123414635000dfg;1234123412341fdweif^123545466;1234123455189454556435135464543513546546;1234123412341234=1405101193010877?00000?;1234123412340000?;123412sfddi000000000000?;1234^234=1405101193010877?00000?;123412341234000dfg12^3412341234sfdeif^123545466;12341234365hn^23534=1405101193010877?00000?;123412341234000dfg12^3412341234sfdeif^123545466;123412sfddi000000000000?;1234^234=1405101193010877?00000?;123412341234000dfg12^3412341234sfdeif^123545466;1234123

Tutor Answer

Borys_S
School: UT Austin

Actually, the program is ready. It uses the...

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Review

Anonymous
Thanks, good work

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