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Search found 53 matches
- Thu May 14, 2020 6:24 am
- Forum: Questions & Answers
- Topic: About FIDO CBOR cmd '04'
- Replies: 0
- Views: 9410
About FIDO CBOR cmd '04'
When firefox send cbor cmd '04', COS need 1.2s to process this command. In this time, COS send keep alive command to firefox. But firefox send init command not wait for response. what happend?
- Thu May 14, 2020 6:16 am
- Forum: Questions & Answers
- Topic: About pyusb
- Replies: 5
- Views: 27904
Re: About pyusb
If you want to work on libusb, the fist step is replacing your device driver. I usb "zadig-2.5.exe" replaced my CCID reader. I can send apdu and recv sw now. 
- Fri Apr 24, 2020 2:54 am
- Forum: Questions & Answers
- Topic: About pyusb
- Replies: 5
- Views: 27904
Re: About pyusb
Now, I'm getting a little clearer on Libusb. winUSB is the grandfather. libusb is the son. pyusb is grandson. All operations base on winUSB. libusb is only a lib. It encapsulates winUSB operations and provides a uniform interfaces. pyusb is python module. If I use C language, I can use libusb too.
- Thu Mar 12, 2020 2:13 am
- Forum: Questions & Answers
- Topic: About pyusb
- Replies: 5
- Views: 27904
Re: About pyusb
Now I resolved this problem by installed the newest libusb（libusb-1.0.22）. And set_configuration() worked rightly. But a new question appread. Tt is write function. dev = usb.core.find(idVendor=0x096e, idProduct=0x0856) dev.set_configuration() cfg = dev.get_active_configuration() for intf in cfg: if...
- Wed Mar 11, 2020 2:45 am
- Forum: Questions & Answers
- Topic: About pyusb
- Replies: 5
- Views: 27904
Re: About pyusb
Did my smartcard reader driver cause this question?
- Wed Mar 11, 2020 2:43 am
- Forum: Questions & Answers
- Topic: About pyusb
- Replies: 5
- Views: 27904
About pyusb
I want use pyusb to test my CCID device. But I'm new to pyusb. I installed pyusb and liusb. But when I called get_active_configuration() or set_configuration(), I got the "Operation not supported or unimplemented on this platform" information. Why?
- Wed Mar 11, 2020 2:37 am
- Forum: Questions & Answers
- Topic: How to RSA Modulus & Exponent works in javacard if both are given in java string format
- Replies: 4
- Views: 21538
Re: How to RSA Modulus & Exponent works in javacard if both are given in java string format
message must smaller than n
- Wed Mar 11, 2020 2:36 am
- Forum: Questions & Answers
- Topic: How to RSA Modulus & Exponent works in javacard if both are given in java string format
- Replies: 4
- Views: 21538
Re: How to RSA Modulus & Exponent works in javacard if both are given in java string format
Cipher = message ^e (mod n);
- Fri Jul 12, 2019 12:22 am
- Forum: Questions & Answers
- Topic: How to process INIT command of FIDO
- Replies: 1
- Views: 10333
Re: How to process INIT command of FIDO
javacard should return channel busy on 02 and process the command came form 01 continue.
- Wed May 29, 2019 3:01 am
- Forum: MCU Programming
- Topic: What's the difference between SLEEP and HALT
- Replies: 2
- Views: 40402
Re: What's the difference between SLEEP and HALT
As far as I know, SLEEP mode and HALT mode are designed to save power. Because SLEEP mode usually closes more peripherals, SLEEP mode can save more power than HALT mode.