EFT Syetms and Device Considerations

Aug 05, 2008 in Banking and EFTPoS, Security

devices and systems differ depending on vendor, country and / aggregator.
Below is a list of things you may like to consider. This list is off the top of my head so it is probably not complete.

Looking at the products and relationships us usually a good start.

Things to consider:

Financial Transaction Processing

Jul 02, 2008 in Banking and EFTPoS

I have been recently working inside one of the larger Banks in .
Through this work I have been looking at the controls and surrounding the of and cards around the Asia Pacific.

I get perform many and systems assessments.
Over the years I have always considered the of the as one of the key considerations.

Until yesterday I had never seen an or . I think some scripted use of these tools could be very interesting.
The site hziggurat29.com

Many of the other tools on this site are also very unique and worth a look.
Big thanks to ziggurat29 for providing such awesome tools.

As many of these sites are of this nature are difficult to find and often seem to vanish over the years, I have chosen to replicate the the from this page and provide local copies on the files.
It is worth periodically visiting the ziggurat29 site every now and again to see if any additional tools have been posted.

One of the more extraordinary files is the Atalla Module ()  and for (simulation) tools. So I wonder if and are shaking in their boots. Some how I don’t think so. ;-)

——– ziggurat29 ———

These are all Windows command-line utilities (except where noted); execute with the -help option
to determine usage.

DUKPT Decrypt (<- the actual file to download)

This is a that will Encrypted Blocks that have been produced via the triple- method.  I used this for testing the output of some Pad software I had created, but is also handy for other debugging purposes.

VISA PVV Calculator (<- the actual
file to download)

This is a that will compute and verify Values that have been produced using the .  It has a bunch of auxiliary functions, such as verifying and fixing a PAN (Luhn ), creating and encrypting blocks, decrypting and extracting PINs from encrypted blocks, etc.

VISA CVV Calculator (<- the actual file to download)

This is a that will compute Values that have been produced using the .  MasterCard CVC uses the , so it will work for that as well.  It will compute , CVV2, CVV3, iCVV, CAVV, since these are just variations on service code and the
format of the expiration date.  is simply comparing the computed value with what you have received, so there is no explicit function.

Atalla AKB Calculator (<- the actual file to download)

This is a that will both generate and Atalla AKB cryptograms.  You will need the plaintext MFK to perform these operations.  When decrypting, the MAC will also be checked and the results shown.

BogoAtalla (<- the actual file to
download)

This is an Atalla (or simulator).  This software (simulation) of the well-known Atalla Module () that is used by banks and processors for cryptographic operations, such as verifying/translating blocks, authorising transactions by verifying
/CSC numbers, and performing key exchange procedures, was produced for testing purposes.  This implementation is not of the complete HP Atalla command set, but rather the just
portions that I myself needed.  That being said, it is complete enough if you are performing acquiring and/or issuing functions, and are using more modern schemes such as and , and need to do generation, , and translation.

This runs as a listening socket and handles the native Atalla command set.  I have taken some liberties with the error return values and have not striven for high-fidelity there (i.e., you may get a different error response from native ), but definitely should get identical positive
responses.  Some features implemented here would normally require purchasing premium commands, but all commands here implemented are available.  Examples are generating values and encrypting/decrypting plaintext values.

BogoAtalla for Linksys (<- the actual file to download)

This is the Atalla ported to Linux and build for installation on an OpenWRT system.  Makes for a really cheap ($60 USD) /test device.

 

Local Files

bogoatalla002
atallaakbcalc
bogoatalla_10-1_mipsel
dukptdecrypt
visacvvcalc
visapvvcalc

“Contactless” credit cards with RFID are easily hacked

Jun 18, 2008 in RFID

A blog posting on provides further discussion as to the
inappropriate deployment and of chips within the existing
marketplace.

http://www..net/2006/10/23/report_contactless_c.html

The underlying point of this article is, the schemes and banks said they are using key rotating of all between the and the /issuer, but this is clearly not the case in many situations.

Another interesting paper is ‘ Report’ located at:

http://www.nytimes.com/packages/pdf/business/20061023_CARD/techreport.pdf

E-Commerce Glossary

Jun 18, 2008 in Banking and EFTPoS

Acquiring Institution
The which holds the partaking in a financial , typically the first involved in the of a .

Applet
A small computer program which facilitates the performance of particular tasks.

Bandwidth
The capacity of a to carry or process information. The higher the bandwidth the faster graphics-laden pages will download.

Browser
Short for browser, a software application used to locate and display pages. The two most popular browsers are Netscape Navigator and Microsoft . Both of these are graphical browsers, which means that they can display graphics as well as . In addition, most modern browsers can present multimedia information, including sound and video, though they require plug-ins for some formats.

Caching
The automatic copying and storage of frequently used information onto a computer system – Typically caching is seen whilst surfing the (graphics, etc.) and used by Services Providers (’s) to reduce the amount of requested from the user onto the .

Issuer
The which issued the cardholder’s and .

Cardholder
The individual participating in the financial whose is being credited or debited.


The additional information printed on the to be processed. This is used to verify if the was present when the was initiated.  This is the additional digits imprinted on the usually on the reverse side for & Mastercard and on the front for AMEX.

Certificate
An x.509 certificate used to entities such as Merchants and Gateways. Certificates can be used to identify and/or encrypt sensitive such as numbers and personal cardholder information.

CGI
Common Gateway : A protocol that allows a page to run a program on a . Forms, counters, and guest books are common examples of CGI programs.

Any piece of software can be a CGI program if it handles input and output according to the CGI standard. Usually a CGI program is a small program that takes from a and does with it, like putting the content of a form into an e-mail message, or turning the into a database query. CGI “scripts” are just scripts which use CGI. CGI is often confused with Perl, which is a programming language, while CGI is an to the from a particular program.

Client
A computer or software that requests a service of another computer system or process (a “”). For example, a workstation requesting the contents of a file from a file is a client of the file . A browser is commonly referred to as a client.

Clients and Servers
In general, all of the machines on the can be categorised as two types: servers and clients. Those machines that provide services (like servers or FTP servers) to other machines are servers. And the machines that are used to connect to those services are clients.

When you connect to Yahoo at www.google.com to read a page, Google is providing a machine (probably a cluster of very large machines), for use on the , to service your request. Google is providing a . Your machine, on the other hand, is probably providing no services to anyone else on the . Therefore, it is a user machine, also known as a client. It is possible and common for a machine to be both a and a client !

Cookie
A file sent by some servers to your computer’s hard drive to enable you to quickly and easily return to particular sites. Cookies give rise to concerns as they are often used to store information used for marketing purposes.

The main purpose of cookies is to identify users and possibly prepare customised pages for them. When you enter a site using cookies, you may be asked to fill out a form providing such information as your name and interests. This information is packaged into a cookie and sent to your browser which stores it for later use. The next time you go to the same site, your browser will send the cookie to the . The can use this information to present you with custom pages. So, for example, instead of seeing just a generic welcome page you might see a welcome page with your name on it.

CRN
The Customer Receipt Number (CRN) is used to assist the holder, the gateway and the to confirm the has been processed and to track the throughout the end-to-end process. This is often used when making enquiries about a or for tracking.

Cybersquatting
Bad faith, abusive domain name registration. Cybersquatters register company and product names as domain names with a view to selling them at inflated prices to the “rightful” owners.

/CVC
The additional information printed on the to be processed. This is used to verify if the was present when the was initiated.  This is the additional digits imprinted on the usually on the reverse side for & Mastercard and on the front for AMEX.

Database
A collection of : part numbers, product codes, customer information, etc. It usually refers to organised and stored on a computer that can be searched and retrieved by a computer program.

Deep link
A hypertext link directly to a page, often bypassing home pages or other identifying pages.

Certificate
A pop up window that allows you to identify the level of used to secure a particular site.

Signature
A complex numeric “signature” designed to be used, in conjunction with special software, to the sender of a message and guarantee that the contents of the message have not been altered during to the recipient. The EU has adopted legislation which makes signatures legally valid. The Bill (Cth) 1999 has the same effect in .

Domain Name
The plain English name given to a host destination on the , for example, www.madrock.net. The suffix, dot.com is known as the generic top level domain, the prefix madrock. The domain name forms part of the Address or URL.

A name that identifies one or more IP addresses. For example, the domain name microsoft.com represents about a dozen IP addresses. Domain names are used in URLs to identify particular pages. For example, in the URL http://www.madrock.net, the domain name is madrock.net.

Download
To transfer information from one computer to your computer.

Dynamic page
A document that is created from a database in real-time or “on the fly” at the same time it is being viewed, providing a continuous flow of new information and giving visitors a new experience each time they visit the site.

Dynamic sites offer the user the ability to interact with the site. This interaction can take place in the form of a search for products, a questionnaire that automatically posts results or polls. Basically, dynamic pages and content are generated from the input of the user.

EC
.

Often referred to as simply e-, business that is conducted over the using any of the applications that rely on the , such as e-mail, instant messaging, shopping carts, services, and FTP, among others. can be between two businesses transmitting funds, goods, services and/or or between a business and a customer.

ECI
The Indicator (ECI), is used to determine the source of the original request. This is a program that the banks have developed and have mandated it’s use.

Interchange (EDI)
Systems set up by businesses, which facilitate the exchange of information.


The process of scrambling to prevent it being viewed by unauthorized persons.

Expiry Date
The date printed on the indicating when the will expire. Not to be confused with the issue date found on some cards.

Firewall
An barrier and/or traffic filter.

Forms
Forms are pages comprised of and “fields” for a user to fill in with information. They are an excellent way of collecting and information from people visiting a site, as well as allowing them to interact with pages. Forms are written in HTML and processed by CGI programs.

Frame
A means of dividing a screen into a number of compartments. Frames may give rise to legal disputes if sites created by third parties are framed as your own.

FTP servers
One of the oldest of the services, File Transfer Protocol makes it possible to move one or more files securely between computers while providing file and organisation as well as transfer control.

Fulfilment
1. Process of supplying goods after an order has been received.
2. Process of reacting to a customer’s request, covering everything that has to happen from the time the customer places an order until they are completely satisfied.

Host
Any computer on a that provides services or information to other computers on the . A host is also called a .

Integration
The software and/or business processes which combine the ’s (website, back office, etc.) order system with the System.

IP address
Every computer connected to the is assigned a unique number known as an Protocol (IP) address. Since these numbers are usually assigned in country-based blocks, an IP address can often be used to identify the country from which a computer is connecting to the .

Gateway
A system allowing incompatible computer networks to send and receive information.

HTML (Hypertext Markup Language)
Language used to translate documents into a form which can be sent over the .

Hyperlink
A highlighted phrase in a document which permits linking to another document or part of a document.

Content Host (ICH)
Those who host or propose to host content on the . Anybody who is responsible for a site, news group or bulletin board that contains articles, graphics or other content provided by others. The host may/may not also produce their own content and/or provide to the through a carriage service, ie they may also be an .

Service Provider ()
A company that provides an connection through some kind of carriage service, for example Sprint, Chello Broadband, Telstra Bigpond, Adam , Internode. ’s may/may not also be ICHs.

Mail servers
Almost as ubiquitous and crucial as servers, mail servers move and store mail over corporate networks (via LANs and WANs) and across the .


This is an set up with a to process orders from customers.


The entity receiving payments for goods and/or services.


The ’s into which transactions are credited or debited.


The software installed on the ’s sites or back office system to enable real-time or batched of financial transactions.

Administrator
The individual(s) responsible for the maintenance of the , including issuing and importing certificates.

MTL
Layer (MTL)

PAN
Primary Number (PAN) is the number printed on the customers to reference the cardholder’s financial . This is typically the number.

Gateway
The Gateway provides a central point of contact/ switching with the for the software or devices. The Networks gateway provides advanced integrated , integration services (Mainframe, Mini, Windows, UNIX, OS400, Desktop/, PoS Terminals. Loyalty systems, etc.) and / customised solutions not offered by regional or global institutions.

An system for real-time charging of cards when a customer places an order. Normally requires a .

A common question from merchants is “Do we have to change banks to use gateways?”

The answer is NO!  - All you need to do is open a facility with one of the supported banks, Networks can ensure you open the correct one for your needs. The facility is then linked to a nominated for example: of New Zealand, ANZ, St George , NAB, Commonwealth, Westpac, of America, of Scotland, Barclay’s, of Queensland, etc. The is then transferred at the end of each day from your to your nominated .

“Pretty Good
A of program used to scramble .

Portal
A site that gathers together many sites under a common branding, for example, Yahoo and Excite.

Private key
The which permits information to be decoded in a public key system.

Public key
The which is used to send a secure message in a public key system.

Secure Certificate
A document that is used to certify that a user or organisation is who they say they are. They contain information about who it belongs to, who it was issued by, expiry date and information that can be used to check out the contents of the certificate. It is as an important part of the SSL system for establishing secure connections.


A computer that provides a service to other computers (known as clients) on a .

Shopping cart
A shopping cart is a piece of software that acts as an store’s catalogue and ordering process. Typically, a shopping cart is the between a company’s site and its deeper infrastructure, allowing consumers to select merchandise; review what they have selected; make necessary modifications or additions; and purchase the merchandise.

Shopping carts can be sold as independent pieces of software so companies can integrate them into their own unique solution, or they can be offered as a feature from a service that will create and host a company’s e- site.

Spam
The use of email or newsgroups to send unsolicited information.

SSL
Short for Secure Sockets Layer, a protocol developed by Netscape for transmitting private documents via the . SSL works by using a private key to encrypt that’s transferred over the SSL connection. Both Netscape Navigator and SSL, and many sites use the protocol to obtain confidential user information, such as numbers. By convention, URLs that require an SSL connection start with https: instead of http:.

Letting your customers know that you have SSL gives your site credibility and may encourage customers to deal with you in confidence.

A protocol used to protect information - typically used between the cardholder’s browser and the ’s webserver and throughout the process. 128bit SSL is typical used as a minimum level within the & Financial industries.

A Secure uses an SSL certificate. It is generally a piece of space that can only be dealt with by using SSL ensuring that transferred between the space and the browser is encrypted.

Static page
In site terms, static means pages that are not interactive. Because the site visitor does not have any control over the information provided, the pages and information do not change with each visit. There is not a two-way communication between the user (client) and the site () in a static page.

Uniform Resource Locator (URL)
An address.

page
A specific group of related files on the , which is usually viewed as a single document.

servers
At its core, a serves static content to a browser by loading a file from a hard disk and serving it across the to a user’s browser. This entire exchange is mediated by the browser and talking to each other using HTTP.

site
A collection of pages stored on a file .

Technology is always being challenged

Jun 18, 2008 in RFID

I read a very interesting paper created by the University of Massachusetts Laboratories and Innealta, Inc.<<

This paper primarily relates to the compromise of contact less technologies () if the and/or have not been implemented correctly or the solution provider has used an inappropriate of and discusses the challenges around and with respect to financial transactions e.g. and compliance.

Additionally, the paper describes a method which is being discussed within many forums around the world and we have now begun to see equipment being produced for the /clonners to use for malicious means.

The overarching point of this paper is to use an appropriate & solutions which supports the / of the user and purpose of the  (financial or non financial)<<

The paper can be found at http://prisms.cs.umass.edu/~kevinfu/papers/-CC-manuscript.pdf

In modern & solutions, newer devices can be used which possess a high degree of power and are therefore able to execute strong cryptographic methods (such as signatures) to protect the and information whilst the is occurring.

These systems often utilise between the / scanner and the tag/ prior to performing the . These methods and are accepted and proven to work within the traditional markets.

As mentioned in the paper, some solution store static digitally signed and/or encrypted which is provided to the / when queried, but this never changes from one to another. This may allow a malicious individual to capture and re-inject the into the at a later stage. The alternative to storing static digitally signed and/or encrypted is to negotiate a key exchange at the time of the in which the /value information is encrypted and subsequently transmitted. With this method the transmitted
changes on every and therefore even if a malicious individual was to capture the encrypted from one , this would not be accepted by the if re-injected at a later stage.

Although this is the case today, older / solutions often use technologies which are not appropriate for financial transactions and therefore may be compromised easily and in some cases without the knowledge of the holder, or .

I find this interesting how some of these less secure solution have been approved for use by acquiring banks and the schemes around the world (if they were told) in recent years, where it has been seen that these solutions have utilised techniques or deployment methods which can be compromised. These technologies and techniques would never be approved within the Point of Sale (PoS) or traditional markets.

It can only be assumed that the need to get product to market quickly at the expense of proper testing, understanding and with due consideration to industry lessons learnt has succeeded again.

ISO 14443 contactless card

Mar 24, 2008 in RFID

An international standard for or contactless smart communication

contactless

is an international standard which describes how and terminals should work to ensure industry-wide compatibility, for example in , , , mass-transit and control applications.

ISO are developed by the ISO, the International Organization for Standardization. committees comprising experts from the industrial, and business sectors develop the to increase levels of quality, reliability and interoperability on a global scale.

Gemplus has always had a strong involvement in ISO definition of the , and has been represented in the of this international standard. The is divided into 4 separate parts outlining physical characteristics, power and signal , initialization and anti-collision and protocol.

Gemplus has developed a wide range of contactless solutions based on the international standard. The speed and convenience of contactless has created a significant demand for this sort of solution in environments such as fast food restaurants, gas stations, , banks and many others.

Bluetooth - Security

Mar 24, 2008 in Bluetooth

Redirected from Bluetooth

Source

1
2 Wireless- History
3 Wireless- Technologies
4 - Introduction
5 - Advantages
6 - Applications
7 - Issues
7.1 The
7.2 The
7.3 The BLUEBUG
7.4
7.5 Warnibbling
8 Future of
9 See also:
10 Reference List

is a new that utilises waves as a way to communicate wirelessly between devices. It sets up that incorporate all of a persons devices into one system for both convergence and convenience.

Wireless- History

Many people put the invention of [wireless] down to Guglielmo Marconi, who in 1895 sent the first telegraph across the English Channel. Only twelve years later began being used in the public sphere. [Mathias, p.2] Up until then however, many wireless pioneers conducted trials across lakes where the used to transmit the signal was longer than the distance across the lake. [Brodsky, p. 3] After its introduction the main use of wireless was for military where its first use was for the Boer War. [Flichy, p. 103] The invention of ensured the feasibility of wireless technologies. [Morrow, p. 2] By the 1920s, had become a well-recognised mass medium. [Flichy, p. 111] From the 1980s until now, wireless have been through several stages, from 1G (analogue signal), 2G ( signal) and 3G (always on, faster rate). [Lightman and Rojas, p. 3] The history of is a much more recent one, with the first -enabled products coming into existence in 2000. Named after Harald Blatand the first, king of Denmark around twelve hundred years ago, who joined the Danish and Norwegian kingdoms, is founded on this same unifying principle of being able to unite the computer and telecommunication industr[ies]. [Ganguli, p. 5] In 1994 the Company began looking into the idea of replacing cables connecting accessories to mobile phones and computers with wireless links, and this became the main inspiration behind . [Morrow, p. 10]

Wireless- Technologies

is not the only wireless currently being developed and utilised. Other wireless technologies, including 802.11b, otherwise known as Wi-Fi, Infrared Association (IrDA), Ultra- Wideband