Method of processing an electronic payment cheque

• US 20050182710A1
• Filed: 03/13/2003
• Published: 08/18/2005
• Est. Priority Date: 03/13/2002
• Status: Abandoned Application

• Current Assignee: Cryptomathic A/S
• Original Assignee: Beamtrust A/S
• Inventors: Kapnoula, Anna, Elgaard, Robert, Kaarle, Peter, Andersson, Sten
• Application Number:
  US10/506,939
• Publication Number:
  US 20050182710A1
• Time in Patent Office: Days
• US Class Current: 705/39
• CPC Class Codes: G06Q 20/0425 the cheque being electronic only
• CPC Class Codes: G06Q 20/06 Private payment circuits, e.g. involving electronic currency used among participants of a common payment scheme
• CPC Class Codes: G06Q 20/10 specially adapted for electronic funds transfer [EFT] systems; specially adapted for home banking systems
• CPC Class Codes: G06Q 20/223 based on the use of peer-to-peer networks
• CPC Class Codes: G06Q 20/26 Debit schemes, e.g. "pay now"
• CPC Class Codes: G06Q 20/322 Aspects of commerce using mobile devices [M-devices]
• CPC Class Codes: G06Q 20/3229 Use of the SIM of a M-device as secure element
• CPC Class Codes: G06Q 20/3255 using mobile network messaging services for payment, e.g. SMS
• CPC Class Codes: G06Q 20/3263 characterised by activation or deactivation of payment capabilities
• CPC Class Codes: G06Q 20/3825 Use of electronic signatures
• CPC Class Codes: H04L 63/0442 wherein the sending and receiving network entities apply asymmetric encryption, i.e. different keys for encryption and decryption cryptographic mechanisms or cryptographic arrangements for public-key encryption H04L9/30
• CPC Class Codes: H04L 63/08 for authentication of entities cryptographic mechanisms or cryptographic arrangements for entity authentication H04L9/32
• CPC Class Codes: H04L 63/126 the source of the received data

Abstract

The invention relates to processing an electronic payment cheque that relates to a transfer of an amount of money from an account of a first user in a first banking institute to an account of a second user in a second banking institute, which processing includes generating digital signatures by means of asymmetric encryption. The method comprises the following steps:•in a first SIM card, creating an electronic payment cheque and signing the electronic payment cheque with a first signature;•transmitting the signed electronic payment cheque to a second SIM card in a second mobile equipment of the second user;•in the second SIM card, additionally signing the electronic payment cheque with a second signature;•transmitting the thus signed electronic payment cheque to subsequently initiate a deposit of the amount of money in the electronic payment cheque into the account of the second user.

Claims

1. A method of processing en electronic payment cheque that relates to a transfer of an amount of money from an account of a first user in a first banking institute (500) to an account of a second user in a second banking institute (550), which processing includes generating digital signatures by means of asymmetric encryption using en asymmetric key pair comprising a private key and a public key, characterized in that, the method comprises the following steps:

in a first SIM card (101a) of the first user, creating an electronic payment cheque and signing the electronic payment cheque with a first signature generated by means of a first private key of a first asymmetric key pair, which first private key is generated on the first SIM card (101a) and resides on the first SIM card (109a) hosted by a first mobile equipment (101b),

via the first mobile equipment (10b) hosting the SIM card (101a) of the first user, transmitting the signed electronic payment cheque to a second SIM card (102a) hosted in a second mobile equipment (102b) of the second user,

in the second SIM card (102a), signing the electronic payment cheque, which has been signed with the first signature, with an additional second signature generated on the second SIM card (102a) by means of a second private key of a second asymmetric key pair, which second private key is generated on the second SIM card (102a) and resides on the second SIM card (102a) hosted by the second mobile equipment (102b),

transmitting the electronic payment cheque signed with the first and the second digital signatures from the second mobile equipment (102b) to a central hub (300), which central hub (300) is in communication with the first and the second banking institutes (500, 550),

in the central hub (300), initiating a deposit of the amount of money in the electronic payment cheque into the account of the second user by initialising a verification of the second signature at the banking institution (550) of the second user and a verification of the first signature at the banking institution of the first user (500).

2. Method according to claim 1, wherein the transmittal of the signed electronic payment cheque from the first mobile equipment (101b) hosting the SIM card (101a) of the first user to the second SIM card (102a) hosted in a second mobile equipment (102b) of the second user, is performed via a digital mobile telephone system.

3. A method according to claim 1, wherein the signed payment cheque is transmitted as a Short Message by means of the Short Message Servicesystem over the GSM system.

4. A method according to claim 1, wherein the signed payment cheque is transmitted as a Short Message by means of lr, Bluetooth or Wi-Fi standards.

5. A method according to claim 1, wherein creating of an electronic payment cheque comprises indicating a telephone number associated to the second SIM card (102a), an amount to be transferred and an index to the account, wherefrom the amount should be withdrawn.

6. A method according to claim 1, wherein the method further comprises:

via the first mobile equipment (101b), prompting the first user to confirm creation of an electronic payment cheque, which prompting is initiated at the first SIM card (101a) hosted by the first mobile equipment (101b).

7. A method according to claim 6, wherein the conformation comprises entering of a PIN-RSA number.

8. A method according to claim 1, wherein the encrypted electronic payment cheque is transmitted via a message proxy in the central hub (300).

9. A method according to claim 8, wherein the encrypted electronic payment cheque at the message proxy is converted to an SMS Point to-point data download message, which subsequently is transmited to the second SIM card hosted by the second mobile equipment.

10. A method of issuing an electronic payment cheque that relates to a transfer of an amount of money from an account of a first user in a first banking institute (500) to an account of a second user in a second banking institute (550), which issuing includes generating a digital signature by means of asymmetric encryption using an asymmetric key pair comprising a private key and a public key, characterized in that, the method comprises the following steps:

in a first SIM cad (101a) of the first user, creating an electronic payment cheque and signing the electronic payment cheque with a first signature generated by means of a first private key of a first asymmetric key pair, which first private key the first private key is generated on the first SIM cad (101a) and resides on the first SIM card (101a) hosted by a first mobile equipment (101b),

via the first mobile equipment (101b) hosting the SIM cad (101a) of the first user, transmitting the signed electronic payment cheque to a second SIM cad (102a) hosted in a second mobile equipment (102b) of the second user.

11. Method according to claim 10, wherein the transmittal of the signed electronic payment cheque from the first mobile equipment (101b) hosting the SIM card (101a) of the first user to the second SIM card (102a) hosted in a second mobile equipment (102b) of the second user, is performed via a digital mobile telephone system.

12. A method according to claim 10, wherein the signed payment cheque is transmitted as a Short Message by means of the Short Message Service system over the GSM system.

14. A method according to claim 10, wherein creating of an electronic payment cheque comprises indicating a telephone number associated to the second SIM card (102a), an amount to be transferred and an index to the account, wherefrom the amount should be withdrawn.

15. A method according to claim 10, wherein the signed electronic payment cheque is transmitted via a message proxy.

16. A method according to claim 15, wherein the signed electronic payment cheque at the message proxy is converted to an SMS Point-to-point data download message, which subsequently is transmitted to the second SIM card (102a) hosted by the second mobile equipment (102b).

13. A method according to claim 90, wherein the signed payment cheque is transmitted as a Short Message by means of lr, Bluetooth 10 or Wi-Fi standards.

17. A method of depositing a received electronic payment cheque that relates to a transfer of an amount of money from an account of a first user in a first banking institute (500) to an account of a second user in a second banking institute (550), which processing includes generating digital signatures by means of asymmetric encryption using an asymmetric key pair comprising a private key and a public key, characterized in that, the method comprises the following steps:

in the second SIM card (102a), signing the received electronic payment cheque, which has been signed with a first signature, with an additional second signature generated on the second SIM card (102a) by means of a second primate key of a second asymmetric key pair, which second private key is generated on the second SIM card (102a) and resides on the second SIM card (102a) hosted by the second mobile equipment (102b),

transmitting the electronic payment cheque signed with the first and the second digital signatures from the second mobile equipment (102b) to the central hub (300), which central hub (300) is in communication with the first and the second banking institutes (500, 550),

in the central hub (300), initiating a deposit of the amount of money in the electronic payment cheque into the account of the second user by initialising a verification of the second signature at the banking institution (550) of the second user and a verification of the first signature at the banking institution (500) of the first user.

18. A method according to claim 17, wherein the signed received payment cheque is transmitted as a Short Message by means of the Short Message Service system over the GSM system.

19. A method according to claim 17, wherein the signed received electronic payment cheque is transmitted via a message proxy in the central hub (300).