摘要:
In accordance with a first aspect of the present disclosure, a radio frequency identification (RFID) device is provided, comprising a first power domain, a second power domain, a first processing unit, and a second processing unit, wherein the first processing unit is configured to execute one or more first operations and the second processing unit is configured to execute one or more second operations, wherein the first operations output intermediate data which are used as input for the second operations, and wherein the first processing unit is configured to operate in the first power domain and the second processing unit is configured to operate in the second power domain, said first power domain having a larger amount of available power than the second power domain. In accordance with further aspects of the present disclosure, a corresponding method of operating a radio frequency identification (RFID) device is conceived, and a corresponding computer program is provided.
摘要:
In a data carrier (1), or a circuit (3) for such a data carrier (1), in which data processing means (20) are included which can be supplied with a supply voltage (V) and in which, during the processing of data while utilizing a characteristic value, a current peak pattern which is significant of the characteristic value occurs on its supply voltage drain terminals (27, 29, 31, 33 and 28, 30, 32 and 34), current peak pattern suppression means are associated with the data processing means (20) these suppression means are preferably formed by filter means (36) which include a capacitor (37) which is arranged in the direct vicinity of the data processing means (20) and is connected to the data processing means (20) via low-ohmic connection segments (40, 41, 42, 43, 44, 45, 46, 47).
摘要:
A data carrier (1), or a circuit (2) for such a data carrier (1), which is arranged to receive a carrier signal (CSM) amplitude modulated in conformity with data (DA), is provided with data regenerating means (12) for regenerating data (DA) modulated on the amplitude modulated carrier signal (CSM), and with data processing means (28) for processing data (DA), the data regenerating means (12) additionally including receiving storage means (20) for temporarily storing a predetermined quantity of data (DA), and also detection means (22) for detecting the fact that the predetermined quantity of data (DA) has been buffered in the receiving storage means (20), the detection means (22) being capable of generating control information (CI1) whereby the data processing means (28) can be switched over from a power saving operating mode to a normal operating mode.
摘要:
An authentication method (100) for a secure data transmission is provided, the method comprising performing a first authentication protocol (101) by using a first cipher and performing a second authentication protocol (102) by using a second cipher. Possible inputs for the first authentication protocol (101) may be one shared key or several keys, and one or two random numbers.
摘要:
A data carrier (1) which can be operated in a contact-bound mode and in a contactless mode and a circuit (1A) for such a data carrier (1) has supply voltage generating means (35) for deriving a supply voltage (VDD), for various circuit sections of the data carrier (1) and of the circuit (1A), from a received useful HF signal (HF), and, in addition, potential equalizing means (94) by which at least two contact terminals (17A, 19A) each connected to a respective transmission contact (17, 19) can be brought at the same potential (ground).