| 摘要 |
The present invention relates to a method for obtaining a PIN validation signal in a data processing unit, the method comprising the following steps of receiving a PIN in the data processing unit, submilling it to a first portable object for verifying it and obtaining a validation signal;
The method io characterized by the steps of :
- catching or receiving an entered PIN directly in said first portable object (5) for verifying it;
- transmitting a fake PIN to the data processing unit (3), said fake PIN being seen by the data processing unit (3) as a PIN to submit to said first portable object (5) for verifying it,
- returning a validation signal in case entered PIN is verified successfully in said first portable object. The invention relates also to corresponding system and secure portable object.
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