APDU stands for Application Protocol Data Unit, it is a message exchanged between a smartcard and a reader.
The transmitting component prepares an application protocol data unit (APDU) for transmission by selecting predetermined portions of the APDU for hashing (201, 203).
Search was initiated by the client with a Search Request APDU (Application Protocol Data Unit) using a Type-3 query.
Application protocol data units (APDU) are routed in a universal serial bus so that a portable electronic object such as a smart card (CA) can be identified by a terminal, such as a micro-computer (TE), as peripheral.
This invention provides means to locally execute an APDU script (125) and collect APDU responses locally for batch transfer to a remote server (50).
This APDU undergoes several operations, shown in Figure 2.
The IC Card (1) detects data associated to a wireless personal communication with the reader device after the processing of the APDU command.
In this way, simple separation of the APDUs and the Internet protocol commands transmitted together with them in a common TCP/IP data stream from each other is enabled.
We are going to explain you what is the PC/SC, how it works and what are the APDU's.
The Z39.50 protocol itself does not, in the current
The personal information inside the MYKAD card can be read using special APDU commands.[49]
To this end, said commands are transmitted by means of TCP/IP, and the allocator unit (32) separates the APDUs and the Internet protocol commands only above the transport layer of the TCP/IP reference model.
For management telegrams: telegrams with higher length in relation to the APDU length of the interface cannot be captured.
The personal information inside the MYKAD card can be read using special APDU commands.[26]
If both devices have the same APDU length then they always will be able to communicate with each other in either direction.
During monitoring two aspects need to be considered: the APDU length of the interface and the type of telegrams sent on the bus.
PC/SC allows you to operate wire-logic cards using APDU’s as if they were microcontroller-based smartcards.
The functionality that is provided by the chip card when a data unit (20) is received via the above-mentioned CP interface (4) is determined in the EEPROM, for example by an APDU handler (512) implemented in the EEPROM.
The role of the APDU is to allow the communication between the reader and the smartcard and to gather the informations of the smartcard to transmit them to the reader.
If however possible ETS will send out the management telegrams as extended frames, the length of these frames is set according to the smallest APDU length found in the entire communication chain.
Of course, either participant in an association can reference such an object by object ID in an APDU, but there is no guarantee that the other partner in the association will be able to understand it.
Requêtes fréquentes français :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
Requêtes fréquentes anglais :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
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