Supported smart card attributes
The only supported attributes are listed below; all other attributes defined in the Winsmcrd.h are returned as STATUS_NOT_SUPPORTED. The attributes are described in Interoperability Specification for ICCs and Personal Computer Systems.
Reader Attributes
| Attribute Tag | Description |
|---|---|
| SCARD_ATTR_CURRENT_PROTOCOL_TYPE | SCARD_PROTOCOL_T1 |
| SCARD_ATTR_CURRENT_CLK | 13560 (little endian integer of 13.56MHz) |
| SCARD_ATTR_CURRENT_D | 1 |
| SCARD_ATTR_CURRENT_IFSC | 32 |
| SCARD_ATTR_CURRENT_IFSD | 254 |
| SCARD_ATTR_CURRENT_BWT | 4 |
| SCARD_ATTR_DEFAULT_CLK | 13560 |
| SCARD_ATTR_MAX_CLK | 13560 |
| SCARD_ATTR_DEFAULT_DATA_RATE | 1 |
| SCARD_ATTR_MAX_DATA_RATE | 1 |
| SCARD_ATTR_CHARACTERISTICS | SCARD_READER_CONTACTLESS |
| SCARD_ATTR_MAX_IFSD | 254 |
| SCARD_ATTR_VENDOR_NAME | ASCII string |
| SCARD_ATTR_VENDOR_IFD_TYPE | ASCII string |
| SCARD_ATTR_VENDOR_IFD_VERSION | 0x01000010, version 1.0.0.1 |
| SCARD_ATTR_PROTOCOL_TYPES | SCARD_PROTOCOL_T1 |
| SCARD_ATTR_DEVICE_UNIT | 0 |
| SCARD_ATTR_CHANNEL_ID | DWORD encoded as 0xDDDDCCCC, where DDDD is the data channel type, and CCCC is the channel number. The following encodings are defined for DDDD: |
| 0x0100 = NFC; CCCC is zero | |
| 0x0200 = UICC; CCCC is zero | |
| 0x0800 = Embedded SE; CCCC is zero | |
| 0xFXXX = Vendor-defined channel type; CCCC is vendor-defined |
ICC Attributes
| Attribute Tag | Description |
|---|---|
| SCARD_ATTR_ICC_PRESENCE | (1 byte) 0 = not present, 1 = card present |
| SCARD_ATTR_ATR_STRING | (32 bytes) ATR string |
| SCARD_ATTR_ICC_TYPE_PER_ATR | (1 byte) |
| 0 = unknown type | |
| 5 = 14443A | |
| 6 = 14443B | |
| 7 = ISO-15693 |
Related topics
Near field communication (NFC) design guide