Introduction Symbols and abbreviations
April 13, 2023 at 2:39 AMSymbols and abbreviations
| Abbreviation | Meaning | Context | Description |
|---|---|---|---|
| APDU | Application-level Protocol Datagram Unit | A command sent by an application to a card (C-APDU) or a response sent back by the card (R-APDU) | |
| ATR | Answer To Reset | ISO/IEC 7816 | The initial string sent spontaneously by a smart card upon reset |
| BLE | Bluetooth Low Energy | A subset of the Bluetooth 4.x standard that is optimized for low power devices | |
| CCID | Chip Card Interface Device | The USB class specification for PC/SC readers | |
| CID | Card IDentifier | ISO/IEC 14443-4 | Allows a contactless reader to operate multiple cards simultaneously |
| DEP | Data Exchange Protocol | ISO/IEC 18092 | |
| DID | Same as CID but in NFC standards | ||
| DSL | |||
| ICC | Integrated Circuit Card | One of the standard names for a smart card | |
| IFD | Interface Device | One of the standard names for a smart card reader | |
| IFSC | Information Field Size for ICC | ISO/IEC 7816, T=1 protocol | Negotiates the size of the blocks from the reader to the card |
| IFSD | Information Field Size for IFD | Negotiates the size of the blocks from the card to the reader | |
| GATT | Generic ATTributes | Bluetooth | Hierarchical structure that exposes a BLE device’s data and methods |
| GAP | Generic Attributes Protocol | Bluetooth | Bluetooth’s function to discover a device’s features |
| NAD | Node Address | ISO/IEC 7816, T=1 protocol ISO/IEC 14443-4 |
An option in T=1 and T=CL to open numerous virtual communication channel with a single card |
| PPS | Protocol and Parameters Selection | ISO/IEC 7816 | Negotiates the card/reader protocol and bitrate |
| RFU | Reserved for Future Use | ||
| RLS | |||
| TPDU | Transport-level Protocol Datagram Unit | In block-oriented protocols (T=1, T=CL), a single block | |
| USB | Universal Serial Bus | ||
| WUP |