DUPLICATION MEANS FOR AN ELECTRONICALLY CODED KEY AND RELATED METHOD

• US 20110064224A1
• Filed: 06/10/2010
• Published: 03/17/2011
• 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 8,509,445 B2
• Time in Patent Office: Days
• US Class Current: 380/277
• 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

Procedure/method for the duplication of original electronic keys used in the road vehicle transport sector 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 to be used in vehicles provided with a central processing unit capable of storing/saving
  • an identification code (ID),
  • an encrypted secret code,
  • a Password,
  • an algorithm,
  • said duplication method being able to produce a duplicated key obtained from a blank key (2), which is originally equipped with:
  • an algorithm,
  • data storage means able to store said Identification Code (ID), said secret code and said Password,
  • in which said storage means are initially empty; said duplication is based on a duplication method and a procedure which makes it possible to use the blank key as a means for the intercepting of secret codes emitted by the vehicle processing unit, and to transfer said information to the duplication method itself.

Claims

1. ) A method for the duplication of original electronic keys (1) 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 to be used in vehicles provided with a central processing unit (3) capable of storing/saving

an identification code (ID),

an encrypted secret code,

a Password,

an algorithm,

said duplication method being able to produce a duplicated key obtained from a blank key (2), which is originally equipped with;

an algorithm,

data storage means able to store said Identification Code (ID), said secret code and said Password,

wherein said data storage means are initially empty, the method comprising

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

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

transferring said random code into an auxiliary means, as a key duplicator (4),

a decryption-step for decrypting said secret code by said key duplicator (4),

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

receiving a second code transmitted by said original key to said duplicator, and its storing into said duplicator,

transferring said second code to said blank key.

2. ) The method of claim 1 comprising

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;

B) the processing unit transmits a radio-electric signal including an identification request code for the identification code (ID) of the original key;

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

B-C) the central processing unit receives said open ID code and compares it with a corresponding ID code saved previously internally;

if it recognizes it, this authentication authorizes the continuation of the procedure;

C) said central processing unit (3) sends a random code, encrypted by the algorithm, which includes the secret code, to the original key (1);

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 random code, and stores said interrogation code of the central processing unit (3) and the Identification code (ID) transmitted by the original key;

E) said sniffer (5) is inserted in said duplicator device (4);

F) said duplicator (4) emits a radio-electric signal which triggers said sniffer 5;

G) said sniffer (5) transmits to said key duplicator a radio-electric signal with the 2 codes stored in D);

H) the duplicator (4) saves the random secret code generated by the unit (3) and, using a series of mathematical functions and opportune calculation means, decrypts said encrypted secret code, obtaining the secret code required.

I) the sniffer (5) is removed from said duplicator (4);

L) the original key is inserted in the duplicator;

M) the duplicator interrogates the original key with an opportune radio-electric signal which contains the secret code encrypted by its algorithm, thereby emulating the functioning of the processing unit;

N) the original key responds by transmitting a new code of its own, that is, the PASSWORD, encrypted;

O) the duplicator saves said PASSWORD;

P) the original key is removed from the duplicator;

Q) the blank key is inserted in the duplicator;

R) the duplicator transmits a radio-electric signal to said blank key, therefore, sending it the Password, the secret code and the ID;

S) the blank key saves all said 3 codes within a defined memory.

5. ) The method according to claim 1 wherein during said 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 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 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 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.