Certification apparatus, method and device for authenticating message origin

• US 20050071634A1
• Filed: 11/19/2002
• Published: 03/31/2005
• Est. Priority Date: 11/19/2001
• Status: Abandoned Application

• Current Assignee: Xiring SA (Ingenico Group SA)
• Original Assignee: Cyber Com Company Limited (Fuji Soft Incorporated), Xiring SA (Ingenico Group SA)
• Inventors: Meggle, Claude, Choiset, Bruno
• Application Number:
  US10/496,203
• Publication Number:
  US 20050071634A1
• Time in Patent Office: Days
• US Class Current: 713/168
• CPC Class Codes: G06Q 20/341 Active cards, i.e. cards including their own processing means, e.g. including an IC or chip
• CPC Class Codes: G06Q 20/40975 using encryption therefor
• CPC Class Codes: G07F 7/1008 Active credit-cards provided with means to personalise their use, e.g. with PIN-introduction/comparison system
• CPC Class Codes: G07F 7/1016 Devices or methods for securing the PIN and other transaction-data, e.g. by encryption arrangements for secret communication, see H04L9/00

Abstract

The invention concerns an apparatus comprising a device designed to encode an original message by means of a digital key whereof the apparatus manufacturer is the owner. The electronic equipment, to authenticate that a received message is a message coming from the apparatus authorized to certify said message, comprises a device designed to decode said received message with the digital key whereof the manufacturer of the apparatus is the owner. The method comprises: a first step whereby an encoded message is generated by means of the apparatus which encodes an original message by means of a digital key whereof the manufacturer of the apparatus is the owner; a second step whereby the encoded message is transmitted to the addressee electronic equipment; a third step whereby the encoded message is decoded with said digital key.

Claims

1. A method for authenticating that a message received by an addressee electronic equipment is a message coming from an apparatus authorized to certify said message, comprising the steps of:

generating a coded message by means of the apparatus which codes an original message, by means of a digital key whereof a manufacturer of the apparatus is the owner;

transmitting the coded message to the addressee electronic equipment;

decoding the coded message is decoded by means of said digital key.

2. The method as claimed in claim 1, wherein said digital key whereof the manufacturer is the owner, reproduces a registered trademark whereof the said owner manufacturer is the proprietor.

3. The method as claimed in claim 1 wherein:

the original message is coded by combining each bit of the digital key with a bit of corresponding rank of the original message, by means of a logical combination of exclusive or type;

the coded message is decoded by combining each bit of the digital key with a bit of the same corresponding rank of the coded message, by means of a logical combination of exclusive or type.

4. The method as claimed in claim 3, wherein the coded message is transmitted with a manufacturer identification number.

5. An apparatus for certifying a message intended to be transmitted to an addressee electronic equipment, comprising a first device designed to code an original message by means of a digital key whereof a manufacturer of the apparatus is the owner.

6. The apparatus for certifying a message as claimed in claim 5, wherein said device comprises a first register for containing each bit of said digital key, a second register for containing bits of the original message, each rank corresponding to the rank of a bit of the first register, a third register for containing a logical combination of exclusive or type of each bit of the first register with a bit of corresponding rank of the second register.

7. The apparatus for certifying a message as claimed in claim, comprising a second device designed to supplement the coded message with an owner manufacturer identification number of said digital key.

8. Electronic equipment for authenticating that a message received is a message coming from an apparatus authorized to certify said message, comprising a first device designed to decode said message received by means of a digital key whereof a manufacturer of the apparatus is the owner.

9. The electronic equipment as claimed in claim 8, wherein said first device comprises a first register for containing each bit of said digital key, a second register for containing bits of the coded message, each rank corresponding to the rank of a bit of the first register, a third register for containing a logical combination of exclusive or type of each bit of the first register with a bit of corresponding rank of the second register.

10. The electronic equipment as claimed in claim 8, comprising a second device designed to determine said digital key as a function of a manufacturer identification number received with the coded message.