Abstract:
The present invention relates to a method for a secure transaction utilizing a portable radio communication device ( 10 ), wherein both parts in the secure transaction are protected against fraudulent actions, among other things by use of a common transaction identity on a predefined transaction server.

Description:
FIELD OF INVENTION 
     The present invention relates generally to transactions, and particularly to secure transactions utilizing a portable radio communication device, such as a mobile phone, personal digital assistant, portable computer or similar. 
     BACKGROUND 
     It is today common with transactions initiated and performed via e.g. Internet. Further, with mobile phones or similar devices it is today possible to perform transactions and related actions through data communication via wireless communication. This provides for a very neat way of performing secure transactions, by always having an electronic authentication device at hand, which could be used as a secure wallet/bank solution. However, this also provides for a variety of ways to manipulate the transaction systems in order to fraud one or both of the parts in a transaction. 
     SUMMARY OF THE INVENTION 
     An object of the present invention is thus to provide secure transactions for portable radio communication devices. 
     This object, among others, is according to the present invention attained by a method as defined by the appended claims. 
     By providing a method for secure transactions wherein both parts in a transaction are connected to a predefined transaction server and independently approves the transaction a secure transaction is achieved. 
     Preferably, the transaction identity is kept unique only during a specific transaction, whereby the necessary amount of transaction identities can be kept very low at the transaction server, being limiting only for handling parallel transactions at the transaction server. 
     The unique transaction identity is preferably created by the transaction server upon request from the first transaction part, which provides for an assured solution for the first transaction part. Alternatively, the transaction identity is created by the second transaction part, which facilitates the transaction for the first transaction part. Further, for e.g. Internet bank login a predefined transaction identity is preferably used. 
     The verification is preferably performed by entering a personal identification number (PIN) in the portable radio communication device, which PIN is selected during installation of user transaction software. 
     Further features and advantages of the present invention will be evident from the following description. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The present invention will become more fully understood from the detailed description of embodiments given below and the accompanying figures, which are given by way of illustration only, and thus, are not limitative of the present invention, wherein: 
         FIG. 1  schematically shows the steps of a method for secure transactions according to an embodiment of the present invention. 
         FIG. 2  schematically shows communication between transaction parts according to an embodiment of the present invention. 
     
    
    
     DETAILED DESCRIPTION OF EMBODIMENTS 
     In the following description, for purpose of explanation and not limitation, specific details are set forth, such as particular techniques and applications in order to provide a thorough understanding of the present invention. However, it will be apparent for a person skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed description of well-known methods and apparatuses are omitted so as not to obscure the description of the present invention with unnecessary details. 
     An embodiment of the present invention will now be described with reference to  FIGS. 1 and 2 . 
     In order to secure all links of a transaction, the first step is to install  1  a user transaction software in a portable communication device  10  of a first transaction part in a secure way, wherein a user is identified in a secure way and tied to the installation. One secure way is to, at e.g. a bank office or other known part, install the user transaction software in the portable radio communication device of the first transaction part or give a memory card or similar device having an installation program for the first transaction part thereon. The identity of the owner of the portable radio communication device is checked in connection with the installation or delivery of the user transaction software transaction program. Instead of checking the identity directly at a bank office or other known part e.g. a registered letter sent to the intended user can be used to verify the identity of the intended user. Finally the user transaction software is connected to an account at the bank or other part, such as a credit card account, a user account, an electronic wallet, etc. Another secure way to install the user transaction software is to, at e.g. an authenticated Internet bank office or similar part, through a secure connection, e.g. a https connection, install the user transaction software in the portable radio communication device of the first transaction part. The identity of the owner of the portable radio communication device is checked in connection with the installation through e.g. PIN. Finally the user transaction software is connected to an account at the bank or other part, such as a credit card account, a user account, an electronic wallet, etc. 
     The user transaction software is arranged to communicate with a predefined transaction server  12  when secure transactions are performed. Information of which account a user transaction software is connected to can be predefined directly at the transaction server or be accessed by the transaction server from the first transaction part whenever a transaction is to take place. Account balance and similar checks are preferably performed prior to any finalization of a transaction. 
     When a secure Internet installation is utilized a mobile phone number is preferably given to the distribution site, which in response thereto sends a text message, such as an SMS, with a download URL to that mobile phone number, i.e. a so called over the air installation (OTA installation). By following that link in the mobile phone the user transaction software is installed in the mobile phone. To first start the application run by the user transaction software an activation code, given by the distribution site, is entered. Further, a PIN is also required to be entered to run the application. 
     When a transaction  13  is to take place, wherein the second transaction part is Internet based, such as an authenticated merchant secure Internet site  11  or a secure login, the transaction comprises the following steps. The user of the portable radio communication device, i.e. the first transaction part, selects a “transaction” section of the user transaction software to connect the first transaction part to the transaction server. The first transaction part activates itself, through an encoded/encrypted wireless communication, on the transaction server  12 , which transaction server  12  thereby puts the first transaction part  10  in an active transaction state on the transaction server  12 . 
     The first transaction part  10  preferably stays in the active transaction state on the transaction server  12  until the first transaction part  10  requests a non-active transaction state. Alternatively, the first transaction part  10  will be put into a non-active transaction state by the transaction server  12  after a time-out. Further, the transaction server  12  could also put the first transaction part  10  in a non-active state after finalization of a transaction. By waiting for a request before putting the first transaction part into a non-active state the advantage is obtained that the user can perform several consecutive transactions without having to reselect the “transaction” section of the user transaction software. This is however preferably combined with a time out, which gives the advantage that the user does not forget to put the portable radio communication device in a non-active transaction state, which would be risky if another person gets hold of the portable radio communication device. From a secure perspective it would be advantageous to put the first transaction part in a non-active transaction state also after a transaction have been completed. 
     The first transaction part thereafter initiates the transaction by requesting  2 , through an encoded/encrypted wireless communication, a transaction identity of the transaction server. The wireless communication can e.g. be performed through GPRS, 3 G data, Wi-Fi or WiMAC, all of which could have some kind of built-in identity verification, and even infrared or Bluetooth, which however are anonymous and could require some added identity verification. The transaction server responds by sending  14  a transaction identity to the first transaction part, which transaction identity is unique during the whole transaction but is preferably reusable after finalization of the transaction, advantageously directly after finalization of the transaction, i.e. when the transaction receipt has been sent. 
     The first transaction part enters  3  the returned transaction identity at the merchant secure Internet site  11 , i.e. the second transaction part  11 . The second transaction part  11  activates itself on the transaction server  12 , which transaction server  12  thereby puts the second transaction part  11  in an active transaction state on the transaction server  12 . The second transaction part thereafter sends  4 , information of the transaction connected to the transaction identity to the transaction server  12 , preferably encrypted. The activation and the following information of the transaction could also be performed in one action, such that the sending of information of the transaction to the transaction server also puts the second transaction part in an active transaction state on the transaction server. Transaction information from the second transaction part that is sent with a transaction can vary, but typically includes the name of the second transaction part and the transaction amount, and possibly also the product name, at a purchase. The name of the second transaction part could alternatively be extracted from the login of the second transaction part to the system instead of being sent together with the transaction, to ensure that such information is not distorted. This is usually performed via a landline, but could also be performed via wireless communication. The second transaction part has previously registered an account at the transaction server, in a way similarly performed for the first transaction part. Account information or similar information of the first transaction part is not necessary to give to the second transaction part and vice versa, since such information is known by the transaction server, and such information should thus not be given to the second transaction part and vice versa. 
     The transaction server  12  identifies the first transaction part by the unique transaction identity sent by the second transaction part and preferably requests  5 , through an encoded/encrypted wireless communication, a verification by the first transaction part of the transaction information connected to the transaction identity. The user transaction software requests  6  e.g. a PIN as verification of the transaction information, such as name of the second transaction part and transaction amount. The verification is returned, through an encoded/encrypted wireless communication, to the transaction server connected to the transaction identity. 
     After verification from the first transaction part the transaction server finalizes  7  the transaction connected to the unique transaction identity and sends a transaction receipt to both the first transaction part, through an encoded/encrypted wireless communication, and the second transaction part. The transaction is only finalized provided that the accounts of both the first transaction part and the second transaction part accept the transaction. 
     The transaction has been described with a portable radio communication device as the first transaction part and a merchant as the second transaction part. The reverse is however also possible wherein the merchant requests a unique transaction identity of the transaction server, in this case preferably through a land line. The unique transaction identity is then communicated to the portable radio communication device from the merchant. However, information of the transaction connected to the unique transaction identity is again sent from merchant to the predefined transaction server, which, by wireless communication, sends the information of the transaction connected to the unique transaction identity to the portable radio communication device. The transaction connected to the unique transaction identity is still verified at the portable radio communication device by a user verification, which verification connected to the unique transaction identity is sent to the transaction server. The transaction connected to the unique transaction identity is thereafter finalized based on the information of the transaction and the unique transaction identity, and a transaction receipt of the finalized transaction is sent from the transaction server to the first and second transaction parts. Also in this reverse procedure both transaction parts have individually put themselves in an active transaction state on the transaction server. Without both transaction parts in the active transaction state the transaction will not be finalized. 
     A similar method can be used for e.g. Internet bank login, or other kinds of secure login or secure authentication. Instead of requesting a transaction identity from the transaction server a predefined identity is utilized, known by both the first transaction part and the transaction server, such as a social security number, account number or similar. The user of the first transaction part preferably enters this predefined identity at the second transaction part and thereby initiates the login at the second transaction part. Alternatively the first and second transaction parts are e.g. equipped with electronic communication means, providing the possibility for the first transaction part to enter the predefined identity at the second transaction part without the user needing to perform it manually. The user of the first transaction part also selects a “secure login” section of the user transaction software to connect the portable radio communication device to the transaction server and thereby puts the first transaction part in an active transaction state on the transaction server. 
     After receiving the predefined identity at the second transaction part the second transaction part puts itself in an active transaction state on the transaction server and requests a verification connected to the login of the transaction server, based on the predefined identity. The transaction server checks that the portable radio communication device corresponding to the predefined identity is connected to the transaction server, at least by checking that the first transaction part is in an active transaction state on the transaction server. The transaction server preferably additionally requests a verification connected to the login from the first transaction part, or alternatively checks that the portable radio communication device of the first transaction part is on, which is performed without any active action by the user thereof. 
     The verification in the portable radio communication device is e.g. a PIN. The transaction server will when both transaction part are in the active state, or after verification when used, send a verification to the second transaction part confirming that the portable radio communication device has been verified, which will allow log in of the first transaction part into the second transaction part. In this case no PIN of other password has been transferred via the Internet connection. Further, the PIN has not been transferred between the transaction server and the second transaction part. The second part is only receives a confirmation that the identification is verified. Transactions at the second transaction part can hereafter be performed as previously described. 
     Examples of different transaction are e.g. point of sales (POS) transaction, person to person (P2P) transfer, micro payments, person to machine (vending machine) transaction, secure identification, electronic identification, secure authentication, etc. 
     It will be obvious that the present invention may be varied in a plurality of ways. Such variations are not to be regarded as departure from the scope of the present invention as defined by the appended claims. All such variations as would be obvious for a person skilled in the art are intended to be included within the scope of the present invention as defined by the appended claims.