EP2545534A1 - Système de gestion de transactions, appareil de gestion de transactions et procédé d'utilisation dans un tel appareil - Google Patents

Système de gestion de transactions, appareil de gestion de transactions et procédé d'utilisation dans un tel appareil

Info

Publication number
EP2545534A1
EP2545534A1 EP11753691A EP11753691A EP2545534A1 EP 2545534 A1 EP2545534 A1 EP 2545534A1 EP 11753691 A EP11753691 A EP 11753691A EP 11753691 A EP11753691 A EP 11753691A EP 2545534 A1 EP2545534 A1 EP 2545534A1
Authority
EP
European Patent Office
Prior art keywords
transaction
input device
electronic input
message
encrypted
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP11753691A
Other languages
German (de)
English (en)
Other versions
EP2545534A4 (fr
Inventor
Hans Schröder
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Retail Innovation HTT AB
Original Assignee
Retail Innovation HTT AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Retail Innovation HTT AB filed Critical Retail Innovation HTT AB
Publication of EP2545534A1 publication Critical patent/EP2545534A1/fr
Publication of EP2545534A4 publication Critical patent/EP2545534A4/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q20/00—Payment architectures, schemes or protocols
    • G06Q20/38—Payment protocols; Details thereof
    • G06Q20/382—Payment protocols; Details thereof insuring higher security of transaction
    • G06Q20/3823—Payment protocols; Details thereof insuring higher security of transaction combining multiple encryption tools for a transaction
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q20/00—Payment architectures, schemes or protocols
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q20/00—Payment architectures, schemes or protocols
    • G06Q20/02—Payment architectures, schemes or protocols involving a neutral party, e.g. certification authority, notary or trusted third party [TTP]
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q20/00—Payment architectures, schemes or protocols
    • G06Q20/08—Payment architectures
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q20/00—Payment architectures, schemes or protocols
    • G06Q20/08—Payment architectures
    • G06Q20/10—Payment architectures specially adapted for electronic funds transfer [EFT] systems; specially adapted for home banking systems
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q20/00—Payment architectures, schemes or protocols
    • G06Q20/08—Payment architectures
    • G06Q20/20—Point-of-sale [POS] network systems
    • G06Q20/202—Interconnection or interaction of plural electronic cash registers [ECR] or to host computer, e.g. network details, transfer of information from host to ECR or from ECR to ECR
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07F—COIN-FREED OR LIKE APPARATUS
    • G07F7/00—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus
    • G07F7/08—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus by coded identity card or credit card or other personal identification means
    • G07F7/10—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus by coded identity card or credit card or other personal identification means together with a coded signal, e.g. in the form of personal identification information, like personal identification number [PIN] or biometric data
    • G07F7/1008—Active credit-cards provided with means to personalise their use, e.g. with PIN-introduction/comparison system
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07G—REGISTERING THE RECEIPT OF CASH, VALUABLES, OR TOKENS
    • G07G1/00—Cash registers
    • G07G1/12—Cash registers electronically operated

Definitions

  • the present invention relates generally to a transaction managing system, an apparatus for managing transactions and to a method for use in such an apparatus. More particularly, the present invention relates to a transaction managing system comprising an apparatus for managing transactions, the apparatus being adapted to interwork between a transaction register, an electronic input device and a transaction manager.
  • a cash register comprises means for calculating a sum of the price of purchased items, also known as a transaction amount, and means for calculating a difference between an amount paid in and the transaction amount.
  • the cash register is normally connected to a receipt printer, and it has a function to deliver information to the receipt writer such that the latter can write a receipt, and it has an order function that activates the receipt writer.
  • the cash register usually comprises a data processing unit that can, for example, calculate the transaction amount and the difference between the amount paid in and the transaction amount.
  • Such an electronic input device is a credit card payment terminal or a Personal Identification Number pad (PINpad) which are electronic input devices used in a debit or smart-card based transaction to input and encrypt a cardholder's PIN.
  • PINpad Personal Identification Number pad
  • PINpads are normally used with integrated point of sale devices in which an Electronic Cash register (ECR) machine is responsible for taking a sale amount and initiating/handling a transaction.
  • ECR Electronic Cash register
  • the PINpad is required so that a customer can use his card (in the case of chip cards) and enter a PIN securely and whereby the card number and the PIN is encrypted before it is sent upstream to a transaction manager of a trusted authority or a bank.
  • the PIN is only transferred from the PINpad to the chip (within the PINpad itself) and it is verified by the chip card. In this case the PIN does not need to be sent to the bank or card scheme for verification (this is known as Offline PIN verification').
  • PINpads are normally equipped with hardware and software security features to ensure that injected security keys and the PIN are erased if someone tries to tamper with the device.
  • the PIN-code is encrypted immediately on entry and an encrypted ⁇ -block is created. This encrypted ⁇ -block is erased as soon as it has been sent from the PINpad to the interworking device and/or the chip card.
  • PINs are encrypted using a variety of encryption schemes, the most common being triple DES.
  • Triple DES is the common name for Triple Data Encryption Algorithm (TDEA) block cipher defined by several standards. It is so named because it applies the Data Encryption Standard (DES) cipher algorithm three times to each data block.
  • Triple DES provides a relatively simple method of increasing the key size of DES to protect against brute force attacks, without requiring a completely new block cipher algorithm.
  • PCI DSS PCI Data Security Standard
  • the PCI DSS is a set of comprehensive requirements for enhancing payment account data security, was developed by the founding payment brands of the PCI Security Standards Council, including American Express, Discover Financial Services, JCB International, MasterCard Worldwide and Visa Inc. Inc. International, to help facilitate the broad adoption of consistent data security measures on a global basis.
  • the PCI DSS is a multifaceted security standard that includes requirements for security management, policies, procedures, network architecture, software design and other critical protective measures. This comprehensive standard is intended to help organizations proactively protect customer account data.
  • Fig. 1 discloses a prior art known transaction system 1 which comprises an electronic input device 10 (EID) in connection with a Transaction Manager 40, located at a Trusted Authority 30 (TA), via a network 20, e.g. Internet, ISDN, a wireless network, phone line etc.
  • the TA is normally a bank or a credit company.
  • the EID in this illustration is a PINpad and is considered to be a stand-alone input device. This means that the PINpad does not interwork with a cash register at all.
  • the PINpad will be separately used and an amount is entered on the PINpad by the staff working in the store, which to be confirmed/verified by the customer.
  • the PINpad encrypts the inputted customer data and sends them to the TM 40 as a transaction request.
  • the TM 40 decrypts the transaction requests and performs the transaction. Then the TM 40 sends a transaction response confirming or declining the transaction.
  • the PINpad may further be connected to a printer (not shown in figure) for printing out a receipt. This receipt is then normally stapled together with the receipt from the cash register.
  • the transaction system mentioned above has the disadvantage that it depends on the accuracy of the staff. It is also time consuming since the staff has to do several operations each time a credit card is to be used for payment. Also it is not convenient to have to staple two receipts together each time a transaction is performed through the use of the PINpad.
  • Fig. 2 discloses a prior art known transaction system 2 which comprises an electronic input device 10 (PINpad) in connection with a cash register 50 and a TM 40, located at a Trusted Authority 30 (TA), via a network 20, e.g. Internet, ISDN, a wireless network, phone line etc.
  • PINpad electronic input device 10
  • TM 40 located at a Trusted Authority 30
  • the PINpad in this illustration is considered to be interworking between the cash register 50 and the TM 40.
  • the cash register is normally an updated ECR or a PC comprising a cash register program.
  • a payment amount typed on the cash register is forwarded as transaction data to the PINpad 10.
  • a customer then enters his PIN-code on the PINpad together with the information read from the customer card, which is normally used to confirm the payment.
  • the PIN and the transaction data are then encrypted and sent to the TM 40, which decrypts that information and performs the transaction that is if the customer fulfills certain requirements (account status etc).
  • the TM 40 then returns an encrypted transaction response to the PINpad 10 which is decrypted and forwarded to the cash register 50.
  • the cash register 50 then prints out a receipt either itself or by use of a printer (Not shown in the figure).
  • each cash register 50 must be updated in place with new program in order to make it possible to cooperate with the PINpad.
  • ECR electronic-reliable and low-latency digital signal processor
  • PC electronic-reliable and low-latency digital signal processor
  • Each cash register program vendor must also therefore have their cash register program certified to make it possible to cooperate with a specific electronic input device type, such as the PINpad, different PINpad versions or a credit card payment terminal.
  • Patent publication SE528368 (WO2006/083219), belonging to the same applicant, illustrates a transaction system 3 for registration control, which is illustrated by Fig. 3.
  • the transaction system 3 comprises a control unit 60, connected to at least one cash register 50 and at least one receipt writer 70.
  • the control unit 60 uses encryption algorithms to generate a unique code based on transaction data received from the cash register 50, which unique code is sent to the receipt writer 70 to be printed onto the receipt.
  • the authenticity of all receipts that are generated by the system can in this way be subsequently checked.
  • the control unit 60 may further be connected to a Supervisory Authority 80 (SA) via an external network 20 such as the unique code and the transaction data may be sent to the SA for further registration and storage.
  • SA Supervisory Authority 80
  • An object of exemplary embodiments of the present invention is thus to provide a simplified solution for managing and controlling transactions wherein the solution is independent of a used transaction register program or a type of a transaction register.
  • the transaction register is any kind of register able to register transactions, such as a cash register.
  • an apparatus for managing transactions comprising: a receiver circuit adapted to receive transaction data from a transaction register; an information extracting circuit adapted to extract a transaction amount from the received transaction data; a first transceiver circuit adapted to send the extracted transaction amount to an electronic input device and to receive a transaction request from the electronic input device, the transaction request comprising encrypted end-user specific information inputted by the end-user; a second transceiver circuit adapted to forward the transaction request to a transaction manager and to receive an encrypted transaction response from the transaction manager; a decryption circuit adapted to decrypt the received encrypted transaction response; and an output circuit adapted to output a message using information in the transaction response.
  • a transaction managing system comprising an apparatus for managing transactions which is adapted to interworking between a transaction register, an electronic input device, and a transaction manager and a printer.
  • a transaction managing apparatus for use in a transaction managing apparatus, the transaction managing apparatus being adapted to interwork between a transaction register, an electronic input device and a transaction manager, the method comprising; receiving transaction data from the transaction register; extracting a transaction amount from the received transaction data; sending the extracted transaction amount to the electronic input device; receiving a transaction request from the electronic input device, the transaction request comprising encrypted end-user specific information inputted by the end-user; sending the transaction request to the transaction manager; receiving an encrypted transaction response from the transaction manager; decrypting the encrypted transaction response received from the transaction manager; and outputting a message using information in the transaction response.
  • An advantage of the exemplary embodiments of the present invention is that the encryption/decryption centralized by the use of one single apparatus that is able to interwork between all other devices in a system.
  • Figure 1 is a block diagram illustrating a network for performing transactions according to prior art.
  • Figure 2 is a block diagram illustrating another network for performing transactions according to prior art
  • Figure 3 is a block diagram illustrating a control system for checking the transactions carried out by a transaction register, according to prior art.
  • Figures 4 is a block diagram illustrating a system with an apparatus for managing transactions according to an exemplary embodiment of the present invention.
  • Figure 5 is a block diagram illustrating an apparatus for managing transaction according to an exemplary embodiment of the present invention.
  • Figure 6 is a block diagram illustrating apparatus for managing transaction according to an alternative exemplary embodiment of the present invention.
  • Figure 7 is a flowchart of a method for use in an apparatus for managing transactions according to an exemplary embodiment of the present invention.
  • Figure 8 is another flowchart of a method for use in an apparatus for managing transactions according to an exemplary embodiment of the present invention.
  • FIG. 4 is a block diagram illustrating a system with an apparatus for managing transactions according to an exemplary embodiment of the present invention.
  • the system is a transaction managing system 100 comprising an apparatus 160 for managing transactions which is adapted to interworking between a transaction register 150, an electronic input device 110, a transaction manager 140 and a printer 170.
  • a transaction amount i.e. a total amount to be paid
  • the transaction data normally comprising the purchased articles and the transaction amount is then sent to the apparatus which receives (S210) the transaction data and uses the transaction data to extract (S220) the transaction amount, among other information, reference to Fig. 7.
  • the apparatus is also capable of generating/extracting (S221) a unique code from the transaction data, see Fig. 8.
  • the unique code is an encrypted string that can be used when decrypted to identify the purchased items and the transaction amount.
  • a number of known description algorithms may be used to encrypt the unique code, such as RSA, Blowfish, Twofish etc.
  • the apparatus which may be PCI DSS certified, continues then by sending (S230) the extracted transaction amount to the electronic input device (110); receiving (S240) a transaction request from the electronic input device (110), the transaction request comprising encrypted end-user specific information inputted by the end-user and transaction amount; sending (S250) the transaction request to the transaction manager (140); receiving (S260) an encrypted transaction response from the transaction manager (140); decrypting (S270) the encrypted transaction response received from the transaction manager; and outputting (S280) an output message using and/or based on information in the transaction response.
  • the encryption and decryption is done using triple-DES and/or according to the PCI DSS requirements.
  • the apparatus may further comprise a step of determining (S271) if the transaction response comprises one or more of the following: an acknowledgement of payment, a non- acknowledgment of payment, a digital signature, a date, and transaction manager related information, which is/are to be used when outputting the output message, see Fig. 8.
  • the decrypted transaction response may either form a basis for a decision on how and/or in what form to output the output message or which information to output on e.g. a receipt or a display.
  • Fig. 5 is a block diagram illustrating such an apparatus 160 for managing transaction according to an exemplary embodiment of the present invention.
  • the apparatus 160 comprises a receiver circuit 161 adapted to receive transaction data from a transaction register and use that information by an extracting circuit 162 to extract a transaction amount from the received transaction data.
  • the transaction data may comprise other information than the transaction amount, such as purchase items.
  • the extracting circuit 162 may also use the transaction data to generate a unique code.
  • the unique code may further be used to validate/authenticate a receipt or to use when controlling and supervising a transaction register 150.
  • the unique code may be separately used for determining the authenticity of the receipt or may be sent to a Supervisory Authority 180.
  • the SA can, through a network, verify very easily the authenticity of a receipt by feeding the unique code that is on the receipt into a computer system of the SA, and decrypt the unique code thereby revealing the transaction data.
  • the apparatus 160 also comprises a first transceiver circuit 163 adapted to send the extracted transaction amount to an electronic input device 110, such as a PINpad, and to receive a transaction request from the electronic input device 110 (EID) in response.
  • EID 110 being an externally located EID, or an integral part of the apparatus 160, se Fig. 6.
  • the transaction request comprises encrypted end-user specific information inputted by the end- user.
  • the transaction request may also comprise encrypted or un-encrypted transaction data as well as other information, such as the unique code or purchased items.
  • the end-user specific information inputted by the end-user may also be a card number, a personal identification number and/or a one-time code generated for one-time use only.
  • a second transceiver circuit 164 is comprised in the apparatus 160 and which is adapted to forward the transaction request to a transaction manager 140, which usually is located at a Trusted Authority 130 (TA), and to receive an encrypted transaction response from the transaction manager 140.
  • the transaction response may comprise one or more of the following: an acknowledgement of payment, a non- acknowledgment of payment, a digital signature, a date, and transaction manager related information, which is/are to be used when outputting the message.
  • the apparatus also comprises a decryption circuit 165 adapted to decrypt the received encrypted transaction response and output a message based-on/using information in the transaction response.
  • the message is outputted by aid of an output circuit 166.
  • the output circuit 166 is adapted to output the message via the EID 110, and/or via a printer 170 in connection with the apparatus 160, when the transaction response comprises a non- acknowledgment of payment, on a display, a receipt or via an alarm function thereof. Also, both the printer 170 and the EID 1 10 may be used to output the message when the transaction response is determined to comprise an acknowledgment of payment.
  • the message may include other information such as: the unique code, purchased items, a date, the TM identity, the transaction amount, a masked end-user credit card number i.e. a coded credit card number (typically printed as for example XXXXXXXXXXXXXXX 465), a transaction/cash register number, and other information similar to the decrypted transaction response.
  • the apparatus 160 may further be in connection with a Supervisory Authority 180 (SA) which is able to receive transaction data and the unique code for each payment from the apparatus via a network 120.
  • SA Supervisory Authority 180
  • the network may be an internet connection, a wireless connection or any other suitable known network for message communication. All the messages sent over the network are encrypted before sending and decrypted at the SA and/or TA, using triple DES and/or public key/private key algorithms.
  • the SA decrypts and stores the received messages for information control.
  • the TA decrypts each request and encrypts each response before sending them back in a secured way, over the network, back to the apparatus, the TA normally using triple-DES for encryption.
  • the apparatus 160 which in this case is PCI DSS certified and/or is using triple DES encryption/decryption, decrypts the transaction responses by the aid of the decrypting circuit. Then the apparatus determines by reading information in the responses how to proceed. This way the apparatus functions as an interworking unit between all other devices, i.e. the EID, the printer, the transaction register, the TM, the TA, and the TM.
  • the apparatus disclosed in the exemplary embodiments of the present invention may be purchased by a vendor or to a store and easily installed.
  • the apparatus is then either connected to an EID or includes itself the EID. Since the apparatus acts independent of the type of transaction register it is connected to, vendors need not to update their local transaction register with new programs or exchange them to new ones.
  • the apparatus also functioning as a certified sealed box guaranties the security of the information stored and processed within it. All information is stored in encrypted form.

Abstract

La présente invention concerne généralement un système de gestion de transactions, un appareil de gestion de transactions et un procédé d'utilisation dans un tel appareil. Plus particulièrement, la présente invention concerne un appareil (160) permettant de gérer des transactions, l'appareil étant adapté à des fins d'interfonctionnement entre un registre de transactions (150), un dispositif de saisie électronique (110) et un gestionnaire de transactions (140).
EP11753691.2A 2010-03-12 2011-03-09 Système de gestion de transactions, appareil de gestion de transactions et procédé d'utilisation dans un tel appareil Withdrawn EP2545534A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE1050229A SE535446C2 (sv) 2010-03-12 2010-03-12 Ett transaktionshanteringssystem, en apparat för hantering av transaktioner och en metod för användning i en sådan apparat
PCT/SE2011/050258 WO2011112143A1 (fr) 2010-03-12 2011-03-09 Système de gestion de transactions, appareil de gestion de transactions et procédé d'utilisation dans un tel appareil

Publications (2)

Publication Number Publication Date
EP2545534A1 true EP2545534A1 (fr) 2013-01-16
EP2545534A4 EP2545534A4 (fr) 2015-08-12

Family

ID=44563729

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11753691.2A Withdrawn EP2545534A4 (fr) 2010-03-12 2011-03-09 Système de gestion de transactions, appareil de gestion de transactions et procédé d'utilisation dans un tel appareil

Country Status (3)

Country Link
EP (1) EP2545534A4 (fr)
SE (1) SE535446C2 (fr)
WO (1) WO2011112143A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017072647A1 (fr) * 2015-10-27 2017-05-04 Fox Glacier Asset Management Llc Système de paiement mobile

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2297414A (en) * 1995-01-25 1996-07-31 Ravell Holdings Pte Ltd Point of sale system
US7181416B2 (en) * 2000-06-08 2007-02-20 Blackstone Corporation Multi-function transaction processing system
JP4604525B2 (ja) * 2004-03-17 2011-01-05 セイコーエプソン株式会社 ネットワークシステム、プログラムおよび印刷装置の制御方法
SE528368C2 (sv) * 2005-02-02 2006-10-31 Axtronic Ab System och förfarande för registreringskontroll
EP1927946A1 (fr) * 2006-11-30 2008-06-04 Teraoka Seiko Co., Ltd. Système de traitement des ventes de produit
EP2147565A4 (fr) * 2007-04-17 2011-10-19 Hypercom Corp Procédés et systèmes pour une authentification et un échange de clé sécurisés
RS51461B (en) * 2007-05-30 2011-04-30 Milan Prokin TRAFFIC CONTROL DEVICE AND PROCEDURE
US20100049658A1 (en) * 2008-08-22 2010-02-25 Javier Sanchez Secure electronic transaction system

Also Published As

Publication number Publication date
EP2545534A4 (fr) 2015-08-12
SE535446C2 (sv) 2012-08-14
SE1050229A1 (sv) 2011-09-13
WO2011112143A1 (fr) 2011-09-15

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