Authentication of a card by contactless reading
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United States of America Patent
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-
Mar 19, 2019
Grant Date -
Dec 7, 2017
app pub date -
Oct 24, 2016
filing date -
Jun 3, 2016
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The invention relates to a method of authentication of a contactless communication circuit, PICC, by a contactless communication terminal, PCD. Within the PCC, a first number is generated and without encryption, transmitted to the PCD. Within the PCD a second number is determined by decryption of the first number with a first key. The determination of a third number is based on the second number, and the determination of a fourth number is by encryption of the third number with the first key. Decryption of the fourth number with the first key to obtain the third number and an interruption of the authentication if a sixth number obtained from the third number is different from a seventh number, is performed by the PICC.
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