Which library? I think you should study specs firstly.
Search found 53 matches
- Thu May 09, 2019 9:01 am
- Forum: MCU Programming
- Topic: How to study STM32?
- Replies: 7
- Views: 31751
- Thu May 09, 2019 8:55 am
- Forum: Questions & Answers
- Topic: SP800-566C
- Replies: 0
- Views: 6011
SP800-566C
Who knows the SP800-56C algorithm? Who could help me to solve the confusion about it? The first step which called extraction is HAMC or AES-CMAC algorithm. Where the key of HMAC or AES-CMAC algorithm come from?
- Thu May 09, 2019 8:47 am
- Forum: Questions & Answers
- Topic: How to process "GetSlot" command
- Replies: 3
- Views: 9056
Re: How to process "GetSlot" command
I have a question about this, "GetSlot" command is standard CCID command. Wtx command is T0 or T1 command. Can we use wtx command to request a extend time for "GetSlot" command?
- Mon Feb 11, 2019 10:07 am
- Forum: Questions & Answers
- Topic: How to selected protocol of compound device
- Replies: 3
- Views: 8290
Re: How to selected protocol of compound device
It is so easy. You only need two interface descripters and a config descripter. One of the interface descripters is HID descripter. The other is CCID descripter.
- Tue Feb 05, 2019 7:22 am
- Forum: Questions & Answers
- Topic: How to use the integer VAR as a prime in JCOP software.
- Replies: 1
- Views: 5449
Re: How to use the integer VAR as a prime in JCOP software.
I think you can defind a prime class.
- Tue Feb 05, 2019 7:10 am
- Forum: Questions & Answers
- Topic: How to selected protocol of compound device
- Replies: 3
- Views: 8290
Re: How to selected protocol of compound device
A device can supports many interfaces. Your CCID and HID is a hardware. And they should have different end points. You can identify which protocol received by end point.
- Fri Dec 07, 2018 3:26 am
- Forum: Questions & Answers
- Topic: The best way to learn Smart Card Programming?
- Replies: 2
- Views: 6439
Re: The best way to learn Smart Card Programming?
"Hello World" program is the brick to knock on the Smart Card Programming door too. 
Find out a simple example and run it.
Find out a simple example and run it.
- Thu Nov 15, 2018 6:07 am
- Forum: Questions & Answers
- Topic: What's the hash prefixes for RIPEMD160
- Replies: 3
- Views: 7964
What's the hash prefixes for RIPEMD160
I want Javacard to generate RSA signature. The MessageDigest algorithm is ripemd160, and padding algorithm is PKCS1. PKCS1 needs a T encoded by DER as its header. What's the T value of PKCS1 when MessageDigest algorithm is ripemd160? Or what's the hash prefixes for RIPEMD160?
- Wed Nov 07, 2018 4:40 am
- Forum: Questions & Answers
- Topic: 13.56 is the frequency of the MIFARE card, then how many frequencies does the RFID have?
- Replies: 2
- Views: 7159
Re: 13.56 is the frequency of the MIFARE card, then how many frequencies does the RFID have?
In general, it is 13.56 too.
- Wed Oct 24, 2018 2:17 am
- Forum: Questions & Answers
- Topic: how to get the available space of chip?
- Replies: 4
- Views: 9196
Re: how to get the available space of chip?
In 《JavaCardAPI》, one item in Notes of getAvailableMemory() is "If the number of available bytes is greater than 32767, then this method returns 32767."
So, if the return value is 32767, you should call getAvailableMeory() again to look up whether the card has more available memory.
So, if the return value is 32767, you should call getAvailableMeory() again to look up whether the card has more available memory.