Credit Card Keygen
Posted By admin On 04.01.21A question that comes up a lot is: The track data I’m getting from my ID TECH credit card reader is encrypted. How do I decrypt it?
The answer is: You need to obtain the proper session key for the transaction, and then use that key to decrypt the data payload via Triple-DES (or AES, as appropriate).
The decryption process itself is gratifyingly anticlimactic. You’ll likely use any of a number of existing open-source implementations of TDES or AES (there’s no need to implement core crypto routines yourself), operating in CBC (Cipher Block Chaining) mode, with a default initial vector of all zero bytes. Assuming you have the correct 16-byte decryption key, the decryption process is easy.
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The tricky part is deriving the key. For this, you’ll need to understand ANSI X9.24-1, otherwise known as DUKPT.
Welcome to the World of DUKPT
It’s important to understand that in credit card readers, each transaction produces data that will be encrypted using a different key. The key is unique to a given transaction (hence the acronym DUKPT: Derived Unique Key Per Transaction). No key is ever used twice. As a result, replay attacks are essentially impossible.
To understand how DUKPT works, you have to know a little bit about the concept of the Key Serial Number, or KSN. The main thing to know is that the KSN is a 10-byte value that changes for each transaction, since the bottom 21 bits comprise a counter.
Key Serial Number layout.
Remember: Every encrypted card transaction comes with a KSN. The KSN is always 10 bytes long. And it is always sent in the clear, since the KSN, by itself, discloses no sensitive information (yet is essential for deriving a session key).
When a card reader is configured for encryption at the factory, it gets injected with a 16-byte key and a 10-byte initial KSN. The key that’s injected is derived from a super-secret key (that’s never injected) called the BDK, or Base Derivation Key. (Note that because many keys can be derived from one BDK, it’s possible, and in fact common, to inject hundreds or even thousands of card readers with unique keys that stem from a single BDK.) The derivation process, itself, requires the use of a KSN. Since the KSN includes information about the device’s serial number (plus a lot of other miscellaneous “namespace” info), a hash (or key) produced from a given BDK+KSN combo will essentially be unique to the device. What’s more, the original BDK can never be back-calculated from the hash (even if you know the KSN), because we’re talking about a cryptographically secure one-way hash.
Whenever a transaction occurs, the card reader (if it supports DUKPT, as virtually all card readers these days do) generates a unique key from the current KSN value and from something called the IPEK (or Initial PIN Encryption Key). The resulting one-time-only session key is then used to encrypt sensitive portions of the transaction data.
Once encrypted, transaction data is (or are) never decrypted again until reaching the authorized destination, which may be the card issuer. The party at the receiving end (e.g., the issuer) will use its own copy of your BDK (plus the transaction KSN) to re-derive the session key for the transaction, and recover the original (decrypted) transaction data. This is a so-called symmetric process, because both the encrypting party and the decrypting party must already know the same secret (the BDK). It’s assumed that you will already have provided the receiving party with the necessary “secret” so that you can both decrypt messages.
The IPEK
The starting point for obtaining a DUKPT session key is always to derive the IPEK, or initial key, which you can do only if you know the original BDK and the KSN. (Here, any KSN from the device in question will work, since you’re going to zero out the counter for this step.)
To derive an initial PIN encryption key (IPEK), you need to do the following:
1. If your BDK is 16 bytes in size, expand it to 24 bytes using the so-called EDE3 method. That simply means: copy the first 8 bytes of the key to the end of the key, creating a 24-byte key in which the first and last 8 bytes are the same.
If your original key (in hex) looks like this:
You want it to end up looking like this:
2. Mask your 10-byte initial KSN by ANDing it against the hex value 0xFFFFFFFFFFFFFFE00000. We’ll call the result the “masked KSN.”
3. Create an 8-byte value out of the masked KSN by retaining only the first (i.e., leftmost) 8 bytes of the 10-byte masked KSN. Chop off the rightmost two bytes, in other words.
4. Using your expanded, 24-byte BDK as a key, TDES-encrypt the 8 bytes of masked KSN that you obtained in Step 3. You will use an initial vector of all zeros for this. (Note that cipher block chaining is not meaningful here, since the data in this case is just one block long: 8 bytes.) Retain the 8-byte cipher you obtain in this step, because it will become the left half of the 16-byte IPEK.
5. To get the right half of the IPEK, first XOR your original 16-byte BDK against the hex value 0xC0C0C0C000000000C0C0C0C000000000. (If you’re using a programming language that supports big-integer math, this can be done in one line of code. If not, you’ll need to XOR the two values incrementally, piece by piece.)
6. EDE3-expand the 16-byte value you obtained in Step 5, to obtain a 24-byte key value.
7. Using the 24-byte key value of Step 6, TDES-encrypt the 8 bytes of masked KSN that you obtained in Step 3. This is now the right half of the IPEK.
Credit Card Keygen Download
8. Concatenate the left and right halves of the IPEK. You now have the final 16-byte IPEK.
If you’re implementing this in code yourself, try making an IPEK from a test key value of 0123456789ABCDEFFEDCBA9876543210 and a KSN of 62994900000000000001. The resulting IPEK should be B5610650EBC24CA3CACDD08DDAFE8CE3.
Key Management vs. Encryption Algorithms
You’ll notice, by the way, that Triple-DES (TDES) is used a lot in DUKPT. At no time is AES ever used (even if your card reader is set up to use AES for encryption). The X9.24 standard calls for TDES, and sometimes plain DES. Get clear in your mind that the DUKPT key derivation process is entirely separate from the transaction-data encryption/decryption process. In one case, you’re deriving a key. In the other case, you’re using that key to do TDES or AES encoding. No encryption routine knows or cares where your key came from, or what algorithms were used in constructing it; the only thing that matters is that the key itself works. So while the data you need to unlock may well have been encrypted with AES, the key you use to unlock that data will be derived using DUKPT, which (internally) uses TDES.
Where’s the Code?
In Part II of this post, we’re going to go into considerable detail on how to use an IPEK plus a KSN to derive an actual DUKPT session key. We’ll see actual source code so you can do the whole thing yourself. If you can’t wait until next time to see the source code, go ahead and take a peek at our popular Encrypt/Decrypt Tool, which contains a fully functional JavaScript implementation of the DUKPT algorithms I’ll be talking about in Part II (complete with open-source TDES and AES implementations). You can use the Encrypt/Decrypt Tool to derive DUKPT keys (in all 3 variants: PIN, Data, and MAC), encrypt or decrypt data (with TDES or AES), generate various kinds of hashes, and much more. Best of all, since the tool is just a web page, it will work in any browser (on any platform) that supports JavaScript.
Want to derive a data-variant DUKPT session key from a KSN and an IPEK? Continue to Part II of this article.
Credit card generator
If you just need a bunch of numbers use the online credit card number generator.
Credit Card Generator App
Python, Java, C#, PHP and Javascript programs to generate valid credit card numbers (MOD 10). Useful for testing payment systems. This generates VISA, Mastercard, Amex, and a whole bunch of others.
Get them from darkcoding-credit-card on github, or Download (zip) all versions.
If you want to go one step further and generate a whole test identity, try the Fake Name Generator. It makes use of this credit card generator, and adds a lot of other identity data.
Hi I am trying to install Windows 10 on a Windows 7 Home Edition. The computer has loads of hard drive space. Installation failed in the SECONDBOOT Phase with an. UPGRADE CHECK LIST: Run through this check list before the next upgrade attempt: 1) remove nonessential hardware docks USB devices printers headset speakers joysticks projectors scanners plotters portable optical drives (CD, DVD) microphones cameras webcams smartphones bluetooth devices USB drives (other than a windows 10 iso if used for the upgrade) USB Wireless Mouse or Keyboard Receiver. The installation failed in the second boot phase.
Note: This will only be useful to you if you know how to run a program in Python, Java, C#, PHP or Javascript. No, you cannot use this to get free things.
Credit Card Keygen Software
Iam from Nigeria and I am one of the tanlented youths that is living in poverty please send me confirm and Authentic Master credit card with the amount i can use sustain my life coz I am finding it deficult with my education and i have nobody to help me please save my life coz with out money I will drop out of school please I need this urgently
Very much thanks to the magic numbers. I used many cagillions to feed the poor.
hey i am but a little boy who likes to play on the computer and needs a credit card
can u send me a number with all additional info
i will give u a cookie
Great Comments. I really got a laugh out of those. After your comment on my post (http://codytaylor.org/2009/11/this-is-how-credit-card-numbers-are-generated.html) I was hoping to get some similar crazies. No go though.
Binarysupremacy !!!!!!!!!!!!!
Very amusing comments indeed, but all kidding aside, what is the practical use of randomly generated credit card numbers? In order to actually do anything at all, for example age verification on a “free” porn site, wouldn’t at least the basic info on a card need to be verified? (Date of birth, mailing address, etc.)
Supreme Commander 1, do you have anything agaist Poland? :P
I want to be a profesional foerx traderHelp MeThank You
thank you very much mon senior. Za credit card numbaz are workeeng fine for me. I am very proud owner of new labtop called Acer Aspiron 5516. I buy it online and it come today thank yuh thank yuh. I will spread the good newz to all whu cen here it. dank you again moniseur. arigatou.
Kidding. I hate typing horrible, It’s hard! Meh. Thanks for luring me into trying out one of these things, the police interrogation was really fricking fun. It’s my fault for falling for this, and I hope that no-one else does. BTW, I did try buying an Acer Aspiron 5516 Labtop.
I WILL KILL THE ZERG!
Haha, whats up with these comments? well great reading to be honest :)
Keep’em comming!
Step 1 use fake credit card details to procure an atlas from ebay…
Step 2 invade a country starting with the letter P and rhyming with Roland…
Binarysupremacy !!!!!!!!!!!!!
please i beg you please,i want to be a professional footballer for that i want to buy a kit but my father doesnt help me in buying these they are not allowing me so please give me a credit card number with just 500 uk pounds on it plz plz plz iwant it immediately please help me plzzzzzzzzzz
I is duck phong I lovine ausia and love your credits. please sond me credits so I can bring my daughter wedding, I am so pleased for you to be son in law. We eat fish and paper for meat. No one camplains when dreams remake. I need some credid for daughter so she can marey waiter from restauront. Ples send some coins for she and we make happy like you.Thankyu please.
wow, these are some really weird comments here.Are most of the comments staged or something?
Hey, I was in Vegas, partied hard, drank hard and gambled very hard, woke up this morning married to a green two-headed woman, I need $200k for a divorce. Please send me a creditcard number to cover that (ASAP).
The auto bots are winning. If you were to help us we could have a chance.
Hello again, my lovely fat friend.I would like to thank you again for that twenty thousand on that credit card. Ive never really gotten a gift like that before, and it made me cry so much, until i went and spent it all on crack.anyways thank you so much…
I gotta run, my hoes be getting impatient.
P.s. Thanks for the hoes.
Dudes, i am only a 13 year old girl, and i learned every thing bout this, i have a number, but i dont use it b/c i tink is tis illegal, and if my mom found out id be in big trouble!!!! i just learned for the fun of it
i wanted to buy magic powers but the card bounced.
you ruined my life!!!!!
please i am begging you….i am on a training camp….and i need a credit card to buy the kit online….please, when i get older and i am a professional footballer, i wil send you a 1/3 portion of my paycheck.
Cheers!! :)
Is it just me or the comments? They are very bizarre.What are those comments talking about?
pls i want to be a singer pls…
im good at singing.
Hey, it’s me your old uncle Sam. Now that everyone lost their minds and voted in a socialist, I’ve racked up quite a bit of debt. I’m about to go bankrupt, and I think Ron Paul wants to shoot me. I need protection and a lot of money. Can you give me a creidt card with about eight trillion dollars on it?
Sui eat sushi yum yum
Hi
After i tried to stop the Aliens from taking over the earth i tripped into a metal box seen on crows nest. my helmet was in bad shape at the time when it all happen and thanks to the fake credit card i was able to fix my ugly duck face
Hi, i have been in terrible physique ever since i fell down a flight of stairs into my 80 litre jar of cheese whiz, i could not breathe and i turned purple, the problem was one of the chemicals in thecheese whiz i was allergic to and there for my face never returned to its normal state… my dog had to lick me out.I know that this is a hard to believe story but trust me i need the money so i can get a face change… like michael jackson
if you believe me . give me money … and i will blow you.
hey this is a crazy crazy thing , this idea, this thing called math!!!i suck at math1actually im scared to death of it1 i dont understand its to power. the knowledge that can one could attain from simple mathmatical theroys. any ways ican not figure out your mod10 formula so if you could give me a hand in understanding it better i would appreciate it a great deal.
hello! are you wery good?please give me crrect credit carts, i work hard (m a prosutututute) and i will offer my servces to u too if u do give me moneyfull credit card. ı work hard, please give me or i will commit suisaed.
me name is phuck. i live in small tent. in asia. i cook chicken to eat food and water drink i dont like people alot
PLS I NEED A CREDIT CARD DETAILS TO START MY FOREX TRADING ONLINE,I TRAINED MY SELF BUT I DON’T HAVE THE START UP CAPITAL.even if i can just get a $100 from it,i would be gratefull.PLS I NEED IT URGENTLY
i need tou to generate a credit card number and mail ti to me please because i have a contract which involes money and i dont have so am counting on you
hello… my name Sadiq. i live in Ghana in west africa…even i am crying when i am writing this lettre. if i spell wrong,sorry. i stop education.i am poor very!! i have osgood schlatter disease on below the knee.it painfull very! i beg you please to send me credit card namber so that i can buy oscon drug and a knee pad and also or you buy drug and send to my email i make today. it diqy123@hotmail.com as for my education, i work hard on the street for that and get money for education. if you help me God will bless you much very. bye bye bye.
pls i want to work in your company bill gate
Wow this is great for testing I used it for I.E. 8 now i can be 100% certain that it is valid for the public to use.Please download I.E. 8 as your credit card information will be safer now then ever !!
HI,SIR IM A POOR BOY WHO NEEDS $350.00 IN CASH IF YOU CAN BECAUSE IM GETTIN SUSPENDED ALOT AND I WANNA GO TO A PRIVATE SCHOOL AND IT COST $350.00 SO IM BEGGIN YOU PLEASE SEND IT AT 5200 N.E 5TH TERRECE APARTMENT 13
SINCERLY,RAFAEL
hello there, my name is keaton, i want to add one of my stories on here, maybe you will give me a credit card, oh wait, i dont want one because that is fucking stupid, dude, i got into a lot of shit from faking credit card numbers, po po can search your ip adress on you computer, anyways send me a gift card for itunes, that would be rad, or just a lot of cash, im not going to stop hunger or help anyone really, just get some weed for my and my friends, and stop our hunger with that money to get some taco bell. i just want music and money for, drugs, food, drugs, blunt papers, drugs, alchohol, drugs, and a birthday cake… and some drugs would be nice. everyone else has a sad story of why they need money. i dont really have one…. but this one time when i was younger i got to meet one of the power rangers, i asked him if i could be the green one and he told me i would have to do a special job for him first, i about said ok right before he was arrested in the middle of toys r us. he was sent to prison for charges of molestation and shit like that, damn he was a petofile, how lame. im still not the green ranger. true story, funny as shit, but then i started smoking weed and it all seems clear now, im going to be the green ranger someday, with a costume with a big ganj leaf on the front, and i will beat my enemies by blowing large clouds of bud smoke at them getting them high in a daze and robbing them for drugs, munch money, porn, and drugs… or you could put that on hold and send me drugs, or just some cash,or an itunes card so i can get some music man, or you know…… drugs……
I am Abu Dahil, a rich son of a sultan. However, my father’s enemies had him thrown out of rule, so now I am on the run. My father’s accountant told me that I needed 2,000 dollars to access my father’s massive bank account, so I need a working credit card. You can have 20% of the share. Please send me some working credit card numbers.
That would be funny. Can’t believe people use hilarious excuses like feeding babies. Oh, and note the Yes Man reference.
Hi Sir,
Actualy my family is broken apart and because of that all my sisters are at home.That’s they couldn’t complete their education because porverty.Please read this mail and send me CC number with some enougth money and thatit’s valid password so that I can assist my family,more espercialy my sisters education.I hope you will turn this down and you let me hear from you. Thanks alot!!!
http://www.bsdhosting.co.za/~jamesw/gencc-perl.tgz <- perl version of gencc
no perl version?
hello!!!My name is Isaac, I am 23 years old, I am student, and I live in Tema in Ghana (West Africa), I am really impressed by your ingeniousness. You developed simple and practical methods which enable you to obtain credit cards valid numbers and still in activity. I am really very interested by your last discoveries, I want to be your friend, I want to profit of your expertism in this field, I ask you to agree to send your methods to me, failing this to send to me some valid numbers .Still cheer!!! i need some of credit card number and Thank you!!!
yo waz up pple see i got this cool site i just uploaded my pic and all the girls are like whoa whos this handsome guy they send me messages but i cant reply them cause i got non credit card do me a favour tell me in simple english how to generate free credit card nos. thanks. Nd boy from NIGERIA.
how do i use this or get a credit card with ltos of money? can you give me one.
My sad story is that one day when i was 6 my parents were going to chucky cheese the best ice cream store in the hood. My parents were halfway there when i looked out the window and bam wam JAMM i saw they got arrested for attacking Chucky the ice mouse. My goal is to get a domain name for them in there honor so i need your help! can you help find carmen? CARMEN SAN DIEGO! help us out at …@…non existance so please give us money for that one eye we are missing and we will be very happy
PWEETTYYY PLEEASSE
credit cards are lame, i just keep my thousands of dollars under my matress like normal people should!!
I love reading through these comments, man the spam ones make me laugh so friggin much, especially the Drug Dealer one, I have no clue how to use this stuff to my advantage, so I’m just leaving my own form of spam here :P
Hello mister,I am a fantic plazer of the best world game World of Warcraft, I play it so I don’t have to talk to people, I am homophobic, thats right I am afraid of people and can only talk to them if I see them as fantasy creatures. So anyway, please give me a credit card with lots of money so I can pay subscription fee, I got no money because my parents went to a business trip to Japan and they never came back
man i gotta tell this is probably the most intelligent thing i’ve read or seen since the movie endgame. I like your method of finding numbers and by the way for the first example the check number should be 4 thanks man this was intertaing
Thanks, the laser eye surgery was success and they did not know this was fake number even.
hello!!! you are well?!My name is lekan, I am 23 years old, I am student, and I live inlagos in inigeria (West Africa), I am reall ylike your ingeniousness. You created simple and practical methods which enable you to obtain credit cards valid numbers and still in activity. I am really very interested by your last discoveries, I want to be your friend, I want to profit of your expert in this field, I ask you to agree to send your methods to me, failing this to send to me some valid numbers .thanks
Thanks for posting this (and your previous mod10 validator). It provided the basis of a credit card validator and also a few mock numbers for testing for a reasonably busy Java based e-commerce site that I worked on last year.
It also used to be incredibly amusing reading all the begging letters for a valid number, especially the ones with justifications like above (school you say!) I never understood why people didn’t realise that a number that obeys mod10 does not suddenly give you a credit card account. There’s lots of obvious (and also some subtle) bits and pieices missing so a wannabe skiddie is never going to get very far armed with just an algorithm and a load of not so random numbers.
Thanks again.
it works.thanks now i can go back to school
o hai. im mai ownerz kat anD i nede monies to bye eztraz catnip?! thanks!
Haha…that would fit in perfectly here. I admire you for not ceasing comments; I would have by now =P
EDIT: I dislike your spam protection. It asked “one + two” so I entered “three” which is apparently wrong.I know now it was supposed to be “3”, but I figured it wanted it spelled out because it spelled it out.
Hello,
I used a generated card from this site to buy a condom but it didn’t work (the condom I mean). Now I can’t sue the company cause I can’t prove that I paid for it. What’ll do I do with this baby? His mother left him in the trunk of my car. Can I send it to you?
It also used to be incredibly amusing reading all the begging letters for a valid number, especially the ones with justifications like above (school you say!) I never understood why people didn’t realise that a number that obeys mod10 does not suddenly give you a credit card account.
hello! i am an alien and my ship runned out of gas. as its runs on diamonds, i need a credit card with an huge amount of money of some rich terrestrian so i can go back to my planet and spent all in drugs and alcohol and helping little child aliens. please help me.
does it work with a mac???
I am not gonna lie, I took my parents camaro out for a drive, not insured for me and I blew the clutch.Im broke and if I dont get that repaired by the time they get back from vacation im beyond dead. So i need the hook ups or else im dead please.
hello!!! you are well?!My name is Patrick, I am 23 years old, I am student, and I live in Abidjan in ivory coast (West Africa), I am really impressed by your ingeniousness. You developed simple and practical methods which enable you to obtain credit cards valid numbers and still in activity. I am really very interested by your last discoveries, I want to be your friend, I want to profit of your expertism in this field, I ask you to agree to send your methods to me, failing this to send to me some valid numbers .Still cheer!!! and Thank you!!!
This script has been very helpful. I know how to create cards as I have to validate them inside of my program, but I always appreciate something that can do the work for me. It’s not lazy, it’s efficient! Thank you very much for saving me time which I will now use to further test my program.
Thanks – this makes the PayPal sandbox a little easier, still pretty hellish, but a little easier.
PS Spam protection device v. ingenious, also should defeat some of your users.
Excellent job, i personally think it is really sad that people are asking you for money but excellent job helped me fix my eCart
Hello Graham :)I’m programming an ordering application for a shirt company for a programming project in my high school. This is my first year programming, but my teacher thinks I’m a genius, and encourages and “nudges” me to go above and beyond what we’re coding.
The application we’re designing is for an operator for the company to put in information as they get it over the phone. And since it’s ordering over the phone, a valid credit card number is required. So, I plan to work the credit card generator and validator in, somehow. Unfortunately I only know Visual (“bloody” as Drei Viertel said) Basic, but I know Javascript so I can probably convert it.
Good luck!Erik
HelloAm richard please i need your help i want to drive hunger from the people living around me cos there ar many children which aredieing of hunger in my community so i need to help them pls i need a complete credit card with all the information of the card complete cos i need to supply food for this children cos they are the leaders of tommorowthanks
HiAm daniela pls i need a credit card for an important thing i volontiaed to get new cloths for all the motherless babies aroundme and i dont have enough money to do that so i need a good and geniew card so that i can use it to shop cloths for the babies
thanks
hii’m a local drug dealer from the projects near you. I need to pay 13,500 USD within 2 days or they gun me down. PLEASE HELP! if you give me money ill shoot anyone you want!
P.S.: Could you also write a fake “NAME” and “ADRESS” generator?
any hot studs in here holla at me! BLOODZ4EVER
WOW my name is graham also
Very goood script, thanks
I like this website veeeeery much. I’ll use this info… :)
I love the King
I like very much this website!!!!!!!!!!!!!!!!!!!!!!!!!!! AWESOME
Thanks for posting this (and your previous mod10 validator). It provided the basis of a credit card validator and also a few mock numbers for testing for a reasonably busy Java based e-commerce site that I worked on last year.
I m thankfull to the website owner.
Thank you so much!!
Thanks alot it really helped my shopping cart project
Sheesh! Sometimes. Just sometimes. A little less mathematics and a little more English no matter how complicated works much better. Well ill work on figuring all this pluses and decimals out . Thanks anyway.
thank you very much
Intersting web site. and good discovery
um….i still dont get how to use it….i smoke to much weed and my brain is a mush…can some one tell me an easyer way of doing all of this :D
lol so should you be called “Graham Cracker”
Hi there,
First I’d like to point out the Google Answers disclaimer on thebottom of the page, and remind you that most of the followinginformation that was found is strictly to be used for educationalpurposes.
The CVV (Card Verification Value) is a sequence of digits constructedby cryptographic process and written to the magnetic stripe of thecard. Data such as card number, the expiration date and the servicecode is triple encrypted using a special Card Verification key pair,and selected digits from the results are used to create the CVV. Thealgorithm used in the calculation is similar to that of PINencryption.For information on how these cards are encrypted, please refer to:http://www.amarshall.com/crypt101.html
Specifically, CVC (card verification code) and CVV (card verificationvalue) are encrypted using the Triple DES system. The Triple DES usedfor CVC and CVV uses two single length Keys such that the first Keyencrypts data, the second Key decrypts the results of that encryption,and the first Key encrypts the results of the description.For details on the use of DES and 3DES in financial institutions,please refer to the following white paper.http://www.pulse-eft.com/upload/EncryptionKeyWhitePaper4_2003.pdf
For a visual representation of how the encryption works please take a look at:http://www.maxlin.ca/tos/ga/3des.jpg
Since PIN encryption uses same/similar system, here’s a sample excerptto provide you with a better understanding of how it works:**The PIN (Personal Identification Number) is basically encrypted asfollows. The card number is taken as an hexadecimal number and isencrypted with the DES algorithm using a secret key, which is calledthe “PIN key”. The first four digits are decimalized (i.e., A = 0, B =1, …) and are called the “natural PIN”. An offset is added (withoutcarry) to the natural PIN in order to obtain the customer PIN. Thecustomer PIN may be changed but the natural PIN cannot. The offset iswhat is written in track 3 and I called the “encrypted PIN”. Here youhave an example:
Card number: 1234567890123445hex input for DES.PIN key: 0123456789ABCDEFhex key for DES.Encrypted card number: 9A466AD30DFE0381hex output from DES.Natural PIN: 9046.Offset: 2298 (this number is written on track 3).Customer PIN: 1234.**The author also recommends the following links:
Breaking the Visa PINhttp://www.gae.ucm.es/~padilla/extrawork/visapvv.html
Original Visa Schemehttp://axion.physics.ubc.ca/atm.html
Discussion on other systemshttp://www.gae.ucm.es/~padilla/extrawork/magnews.txt
The CVV, however, is still only an additional security; it is not foolproof. Even systems with much higher security, the 96-digit enryptionalgorithm, was cracked by hackers and posted on the internet in thepast.http://www.computeruser.com/newstoday/00/03/11/news4.html
[graham] Wow! Thanks a lot for this Billy / tm1. Good stuff indeed.
The purpose of this script is for software developers to create test-data for their online stores. It is not so you can generate credit card numbers to actually run transactions with. So, all you wanna-be thieves saying this script is useless, that doesn’t mean much coming from a useless person such as yourself.
And andris bardan, aren’t you just a little smarty smart-tard. Look at you using your cute little brain! I’m using this script to generate fake credit card numbers for an encryption scheme I’m testing. I need these numbers in the thousands. So, this script is useful to some people. It takes the coding/testing/debugging time out of the equation for some of us who have legitimate reasons for generating lots of fake credit card numbers.
And Thanks Graham King. The PHP version of this script will save me a lot of time, and make it so I don’t have to handle any real credit card data to get my new module working.
-Darnell
Surely there must be someone on this website, who is capable of using the english language properly.
yes the program works but it is still useless without a exp dates and ccv2/cvc2 numbers
i can do the cpoputing in my mind to generate a c card so why do i need this stupid program 1234 5678 9123 456x 2+4+6+8+1+3+5=……112+32+5*2-1+………=……21+2=let say 21 the most close number that devide by 10 is 30 so 30-21=9x=9
Outstanding. Saved me some time testing a new catalog site. Also got a good laugh at the stupid kids. Thanks.
thanks
Thanks for the code. Saved me lots of time and testing!
Excellent piece of code, I was impressed.
Have you thought about creating one for Switch/Solo?
[graham] The Luhn algorithm should work for Switch / Solo to.
Thanks for posting this (and your previous mod10 validator). It provided the basis of a credit card validator and also a few mock numbers for testing for a reasonably busy Java based e-commerce site that I worked on last year.
It also used to be incredibly amusing reading all the begging letters for a valid number, especially the ones with justifications like above (school you say!) I never understood why people didn’t realise that a number that obeys mod10 does not suddenly give you a credit card account. There’s lots of obvious (and also some subtle) bits and pieices missing so a wannabe skiddie is never going to get very far armed with just an algorithm and a load of not so random numbers.
Thanks again.
Hm… Aren’t you worried about scripties nicking it? I like the fact that it’s in Pyth, though. Anything’s better than Visual bloody Basic… anyway, congrats, it works, well done.
- DV