Article from the serie "CCID descriptor statistics"
The bDescriptorType field is a number value from the USB CCID descriptor: Functional Descriptor type.
The CCID 1.1 specification gives/imposes the value 21h. FFh is for proprietary devices.
It is then not suprising that thevast majority of devices use the standardized value 21h.
The 5 devices with bDescriptorType = 0xFF are:
The bDescriptorType field is a number value from the USB CCID descriptor: Functional Descriptor type.
| bDescriptorType | # | % |
|---|---|---|
| 0x21 | 249 | 98.03 % |
| 0xFF | 5 | 1.97 % |
The CCID 1.1 specification gives/imposes the value 21h. FFh is for proprietary devices.
It is then not suprising that thevast majority of devices use the standardized value 21h.
The 5 devices with bDescriptorType = 0xFF are:
- Dell keyboard SK-3106
- Gemalto Gem e-Seal Pro USB Token
- MYSMART MySMART PAD V2.0
- Verisign Secure Storage Token
- Verisign Secure Token
This is dummy text. It is not meant to be read. Accordingly, it is difficult to figure out when to end it. But then, this is dummy text. It is not meant to be read. Period.
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