DUPLICATION MEANS FOR AN ELECTRONICALLY CODED KEY AND RELATED METHOD

• US 20110123026A1
• Filed: 03/26/2010
• Published: 05/26/2011
• Est. Priority Date: 06/10/2009
• Status: Active Grant

• Current Assignee: Keyline SpA (Godrej and Boyce Manufacturing Company Limited)
• Original Assignee: Keyline SpA (Godrej and Boyce Manufacturing Company Limited)
• Inventors: Rebuli, David
• Granted Patent: US 8,750,510 B2
• Time in Patent Office: Days
• US Class Current: 380/270
• CPC Class Codes: B60R 25/00 Fittings or systems for preventing or indicating unauthorised use or theft of vehicles locks for vehicles E05B77/00-E05B85/00
• CPC Class Codes: B60R 25/04 operating on the propulsion system, e.g. engine or drive motor
• CPC Class Codes: G07C 2009/00865 remotely by wireless communication
• CPC Class Codes: G07C 9/00174 Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys mechanical locks with electric permutation E05B49/00; arrangements for sensing or reading record carriers G06K7/00; electronic switching H03K17/00
• CPC Class Codes: G07C 9/00309 operated with bidirectional data transmission between data carrier and locks
• CPC Class Codes: G07C 9/00817 where the code of the lock can be programmed

Abstract

Method for the duplication of original electronic keys used in the automotive transports, and provided with coded and encrypted electronic authentication means, comprising: an Identification Code (ID), an encrypted secret code, a Password, an algorithm, data storage and computing means, able of being used in vehicles provided with a central processing unit able of storing an Identification Code (ID), an encrypted secret code, a Password, an algorithm, said duplication method being able of obtaining a duplicated key based on a blank key, which is originally provided with an algorithm, data storage means able of storing said Identification Code (ID), said secret code and said Password, wherein said data storage means are initially empty; said duplication is based on a duplication means and on a method which allows of using the blank key as intercepting means of secret codes sent by the vehicle central processing unit, and of transferring said information to the duplication means itself.

Claims

1. ) A method for the duplication of original (1) electronic keys provided with coded and encrypted electronic authentication means, comprising:

an Identification Code (ID),

an encrypted secret code,

a Password,

an algorithm,

data storage and computing means,

able of being used in vehicles provided with a central processing unit (3) able of storing;

an Identification Code (ID),

an encrypted secret code,

a Password,

an algorithm,

said duplication method being able of obtaining a duplicated key based on a blank key, which is originally provided with;

an algorithm,

data storage means able of storing said Identification Code (ID), said secret code and said Password,

wherein said data storage means being initially empty, the method comprising;

an interception step of a radio-electric interrogating signal including a random code encrypted by the algorithm comprising the secret code transmitted by said central processing unit (3),

a step of storing said random code by an external means (5),

a step of transferring random code into an auxiliary means, as a key duplicating device (4),

a decryption step of said secret code by said key duplicator (4),

a step of interrogating, through a radio-electric signal including said secret code emitted by said duplicator, to said original key,

a step of receiving a second code (Password) transmitted by said original key to said duplicator, and of its storing into said duplicator,

a step of transferring said second code (Password) to said blank key.

2. ) The method according to claim 1, characterized:

Step A) the original key (1) is introduced into the vehicle lock, and is rotated until an electric circuit is closed, which activates said central processing unit (3) of the same vehicle,

Step B) said central processing unit transmits a radio-electric signal comprising a code of requesting the identification of said Identification code (ID) of the original key,

Step B-B) the original key receives said Identification code, and transmits to the central processing unit the Identification code (ID) stored in it;

Step B-C) the central processing unit receives said code (ID) and compares it to a ID code previously stored;

if it is recognized (authenticated), the present method is continued;

Step C) said central processing unit (3) sends its encrypted secret code to the original key (1),

Step D) an interception device (sniffer, 5), placed close to the original key, intercepts the radio-electric signal containing both the interrogation of the central processing unit, and the original key reply, i.e. its encrypted secret code, and stores said interrogation code of the central processing unit (3) and the Identification code (ID) transmitted by the original key;

Step E) said interception device (5) is introduced into said key duplicator (4),

Step F) said key duplicator sends a radio-electric signal to said interception device (5),

Step G) said interception device (5) transmits to said key duplicator (4) a radio-electric signal with the two codes stored in the Step D,

Step H) said key duplicator (4) stores the encrypted secret code produced by the central processing unit (3) and, through a plurality of mathematical functions and computation means decrypts said encrypted secret code, and obtains the secret code,

Step I) said interception device is removed from said key duplicator (4),

Step L) the original key is introduced into said key duplicating device (4),

Step M) the key duplicating device interrogates the original key with a proper radio-electric signal containing the secret code encrypted by its algorithm, so emulating the central processing unit operation,

Step N) the original Key replies by transmitting its encrypted Password,

Step O) the key duplicating device stores said Password,

Step P) the original key is removed from said key duplicating device,

Step Q) the blank key is inserted into the key duplicating device,

Step R) the key duplicating device transmits an radio-electric signal to said blank key, with said Password, the secret code and the ID,

Step S) the blank key stores into a defined memory said three codes (Password, secret code and ID).

5. ) The method according to claim 1 wherein during said Step D said interceptor device (5) receives and stores also the signal bearing the encrypted secret code stored into the original key (1), and in that during said Step G said interceptor device (5) transmits to said key duplicating device (4) a radio-electric signal which includes both said Identification code and said encrypted secret code of the original key itself.

6. ) The method of claim 2, wherein during said Step D said interceptor device (5) receives and stores also the signal bearing the encrypted secret code stored into the original key (1), and in that during said Step G said interceptor device (5) transmits to said key duplicating device (4) a radio-electric signal which includes both said Identification code and said encrypted secret code of the original key itself.

3. ) A method for the duplication of original (1) electronic keys provided with coded and encrypted electronic authentication means, comprising:

an Identification Code (ID),

an encrypted secret code,

a Password,

an algorithm,

data storage and computing means,

able of being used in vehicles provided with a central processing unit (3) able of storing;

an Identification Code (ID),

an encrypted secret code,

a Password,

an algorithm,

said duplication method being able of obtaining a duplicated key based on a blank key, which is originally provided with;

an algorithm,

data storage means able of storing said Identification Code (ID), said secret code and said Password,

wherein said data storage means being initially empty, the method comprising;

A-1) the original key (1) is inserted into said key duplicating device (4),

B-1) said key duplicating device emits a radio-electric signal interrogating the original key,

C-1) the original key reacts by transmitting a radio-electric signal containing its Identification code (ID),

D-1) said ID is received and stored into the blank key,

E-1) the blank key is introduced into the vehicle lock, and one or more attempts for the vehicle ignition are tried,

F-1) at any attempt for the vehicle ignition the central processing unit transmits to the blank key a radio-electric signal containing its encrypted secret code,

G-1) the blank key is removed from the vehicle lock and introduced into the key duplicating device,

H-1) the key duplicating device through proper computing means and mathematical functions decrypts and stores the secret code,

L-1) the blank key is removed from the duplicating device,

M-1) the original key is introduced into the key duplicating device,

N-1) the duplicating device interrogates the original key with a proper radio-electric signal containing the secret code, so emulating the central unit operation,

O-1) the original key responds by transmitting a new own code, the PASSWORD;

P-1) the duplicating device stores such PASSWORD,

Q-1) the original key is removed from the duplicating device,

R-1) the blank key is introduced into the duplicating device,

S-1) the duplicating device transmits a radio-electric signal which contains;

said PASSWORD, and the secret code, to said blank key;

in the facts the ID has been already transmitted and stored during the previous Steps C-1 and D-1, and

T-1) the blank key stores into a defined memory said PASSWORD and the secret code.

4. ) The method according to claim 3, wherein the attempts described in said Step E-1 for the vehicle ignition are tried three times.