© EDV Team Süd GmbHEDVTeamSuedGmbHLogo

 

et.sKartenAutorisierungLogo

Central debit card authorisation system

 

 

 

 is a debit card authorisation system available 24/7.

It supports for the following functions the communication protection, card and account validation and backend interface processing for the banks own cards.

 

  • Withdrawals at own and other domestic and international ATM’s

  • Deposits at own ATM’s

  • Payments at domestic and international POS as well as ecCashOffline terminals

  •  Transfer of money to the “Geldkarte” (prepaid debit card) at own and other terminals

  • Transfer of money to a prepaid mobile phone card at ATM’s

  • Display of account balances 

  • Processing of self service terminal requests

  • Processing of advice messages

 

Currently the authorisation of magnatic strips and chips version SECCOS 5.0 and SECCOS 6.0 is supported.

 

Request processing

 

The incoming messages, from own terminals as well as from acquirer gateways, are checked and authorised.

To document the authorisation, technical and account related log files are kept during processing.

The ISO converter, which is a central input and output component for all messages, converts different message formats (ISO 8583, etc.) to one internal working structure. At the end of processing, this structure contains all relevant information to create outgoing message in the desired output format.

The customized Repository contains the base information upon  which authorisation components are to be processed.

This centrally controlled authorisation process as well as the modular construction of the authorisation system easily facilitates an extension and redesign of the functions.

Designed as a service oriented architecture (SOA), our system economically adjusts to the requirements of the future.

 

 

Transaction security

 

As a part of the transaction security,  manages

 

  • the symmetric cryptography according to the DES algorithm (single and triple DES)

  • the asymmetric cryptography for the signature / HBCI

  •  hash value calculation based on MD5 / ZIV

  • the key translate to and from the issuer and acquirer gateways,

  • the PIN verification as per ISO

  • the security of the bitmap subentries for chip based transactions such as a “Geldkarte” (prepaid debit card), EMV and ecCash offline

  • Scripting for SECCOS 5 and 6 cards and EMV transactions (e.g. updates of the chip risk parameters and/or the retry counter reset)

 

Card- and account validation

Parts of the card- and account validation are:

 

  • Card, account and disposition checks against the backend system,

  • Card, account and usage lock checks,

  • Set locks depending on the PIN validation and retry counter

  • Withdrawal limit checks depending on the card and account as well as

  • Validation of information relevant to the chips of EMV and ecCashOffline

 

 

Backend processing

The existing central components can be economically and easily combined through the open  interfaces of the system (parametric user exits). e.g.

  • Access to the card and account data base

  • Disposition

  • Cryptography (PAC/MAC)

  • Transaction logging

  • etc

 also initializes the following data base updates:

 

  • the card- and account limits

  • the retry counter

  • the locks

  • etc

 

 

Response

 

 sends back a positive or negative response  depending on the validation.

The EMV response can be customized according to the issuer’s requirements.

 

 logs all incoming and outgoing messages according to the legal audit requirements.

 

 

Advice messages

Relevant information about limits and locks is provided to the gateways for independent offline authorisation.

 

 

What are the benefits of  et.sKartenAutorisierungLogo

 

  • optimized and service oriented business processes

  • short lead times for new functions and business transactions and therefore

  • high flexibility considering the changing market requirements

  • quick, smooth and simple integration into your existing system with its open architecture

  • reduced running costs

  • liability shift with chip based transactions

  • SEPA (single euro payments area) processing

  • Routing to different issuer gateways.

 

et.sKartenAutorisierungLogo in use.

 

Courrently processes

 

  • About 8.8 debit cards and

  • up to 28.5 million authorisation transactions per month.

 

 

 

 

top