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Method for securely embedding information in an image to be processed by a mobile terminal with the purpose of setting application or system parameters

IP.com Disclosure Number: IPCOM000129176D
Published in the IP.com Journal: Volume 5 Issue 10A (2005-10-25)
Included in the Prior Art Database: 2005-Oct-25
Document File: 2 page(s) / 38K

Publishing Venue

Siemens

Related People

Juergen Carstens: CONTACT

Abstract

New method enables to embed securely information in surfaces subject to be captured by the mobile phone imaging equipment with the purpose of setting application or system parameters. The corresponding protocol will be as follows: Registration: The user will have register previously with the payment service provider (PSP) and the PSP will have provided the user with a payment certificate and a PKI (Public Key Infrastructure) key pair (the private key will be used for origin data authentication). During the registration process the user will have registered the recommended payment mechanism (e.g. credit card data). Usage:

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Method for securely embedding information in an image to be processed by a mobile terminal with the purpose of setting application or system parameters

Idea: Carmen Santa-Cruz, DK-Aalborg; Enric Mitjana, DE-Munich

New method enables to embed securely information in surfaces subject to be captured by the mobile phone imaging equipment with the purpose of setting application or system parameters.

The corresponding protocol will be as follows:

Registration:

The user will have register previously with the payment service provider (PSP) and the PSP will have provided the user with a payment certificate and a PKI (Public Key Infrastructure) key pair (the private key will be used for origin data authentication). During the registration process the user will have registered the recommended payment mechanism (e.g. credit card data).

Usage:

(1) A proximity detector in the merchant access system (e.g. access gates in a subway) will determine the presence of a new customer/user.

(2) The presence of a customer will trigger the merchant system to offer a picture. This picture could be originally provided by the PSP and it will include a digital watermark. This digital watermark will contain payment and service information and a customer payment transaction number. In addition, it will include a URL (Uniform Resource Locator)/address where the picture payment client in the user's device can go for payment checkout.

(3) The user will take a picture of the image presented by the merchant. The information about payment can be retrieved by a watermark-processing unit in the payment client in the mobile device. Information on price and service will be preferably presented to the user for approval prior payment clearance. The URL/address information will be automatically extracted from the picture and a payment communication channel will be established with the merchant according to the address type. E.g.:

a) A MMS (Multimedia Messaging Service) client will send a MMS with the whole picture as an attachment. Therefor, each payment message during the payment transaction will include the relevant information as a watermark.

b) A Session will be established for the following use case: Payment information (watermarks) is extracted from the picture and forwarded in a message to the merchant over the session's protocol. In this case the use of the payment channel is more efficient since only the relevant information is transmitted to the merchant.

(4) By making use of this payment channel, the user will request payment clearance from the merchant site. The submitted message will include the payment transaction number contained in the picture.

(5) In response to the payment clearance request, the merchant will generate a unique nonce value for a given transaction number. Pair's nonce/transaction number will be kept locally in the memory of the merchant's system. The nonce value will be preferably an alphanumeric value. It can also be a graphical element (e...