Method for authenticating a device including a processor and a smart card by pattern generation
AssigneeERCOM Engineering Reseaux Communications
InventorJulien kowalski
Life of this patent
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Abstract
A method for authenticating a device comprising a processor and a smart card. A user unlocks the smart card using a PIN code. A secret key Kc of the smart card and the PIN code of the smart card is transmitted to the processor. The processor performs a cryptographic calculation using a secret key Kp of the processor, the PIN code, and Kc. A pattern is generated from the cryptographic calculation by the processor and transmitted to the user. The pattern generated by the device is compared to a pattern memorized by the user.
Claims17
1-16. (canceled)
A method for authenticating a device comprising a processor and a smart card, the method comprising the steps of:
- unlocking the smart card using a PIN code by a user;
- transmitting a secret key Kc of the smart card and the PIN code of the smart card to the processor;
- performing a cryptographic calculation by the processor using a secret key Kp of the processor, the PIN code, and the secret key Kc;
- generating a pattern from the cryptographic calculation by the processor;
- transmitting the pattern to the user;
- and
- comparing the pattern generated by the device and a memorized pattern by the user.
The method according to 17, wherein the cryptographic calculation is a symmetric encryption algorithm.
Dependencies are inferred from the claim text.