Search found 54 matches
- Mon Dec 07, 2015 12:45 pm
- Forum: Questions & Answers
- Topic: How to read and write biometric data from/to a java card
- Replies: 2
- Views: 6883
Re: How to read and write biometric data from/to a java card
An APDU (Application Protocol Data Unit) is actually the transport protocol (like tcp/ip) between the card and the computer. If you need to do unusual things you would need to learn this, similar to needing to learn tcp/ip to talk low-level to a router. When you create an applet you need to set an A...
- Fri Dec 04, 2015 4:24 pm
- Forum: Card Products
- Topic: Does IFD A40cr cards support ECC algorithm?
- Replies: 2
- Views: 7068
Re: Does IFD A40cr cards support ECC algorithm?
It can, you just have to request the ECC option be installed when you order it.
- Fri Dec 04, 2015 4:22 pm
- Forum: Card Products
- Topic: Suitable JCOP cards or FEITIAN cards for MUSCLE applet
- Replies: 2
- Views: 6804
Re: Suitable JCOP cards or FEITIAN cards for MUSCLE applet
Personally, I would chose one at least 64k in size. If you're going to use ECC keys and signatures make sure the card has that. JCOP cards, I would go with the J3(A or D)081 cards. For Feitian, the A40 is good, just request that the ECC option be installed.
- Mon Nov 23, 2015 2:10 pm
- Forum: OpenPGPApplet
- Topic: How to compute the digital signature in this Applet?
- Replies: 4
- Views: 21426
Re: How to compute the digital signature in this Applet?
You have done a verify but have you created the RSA keys (public/private) for the 3 functions (being sign/encrypt/authenticate)?
What the error is, it's telling you no key is there.
What the error is, it's telling you no key is there.
- Thu Nov 05, 2015 4:41 pm
- Forum: JCOP Tool
- Topic: JCOP Tools
- Replies: 10
- Views: 72773
Re: JCOP Tools
I am using JCIDE now. I have also installed Eclipse with some javacard plugins. I use that for full java work as well as Javacard work.
- Thu Nov 05, 2015 4:37 pm
- Forum: Questions & Answers
- Topic: How many logical channels does JCIDE debug support?
- Replies: 3
- Views: 8323
Re: How many logical channels does JCIDE debug support?
Check the APDU api. The CLA byte is different for #4-#19.
- Sat Oct 31, 2015 1:09 pm
- Forum: Algorithm School
- Topic: How to encode an ECDSA Public Key on java card
- Replies: 3
- Views: 8918
Re: How to encode an ECDSA Public Key on java card
If it supports ECDSA, just import it with a setting of exportable. You would then be able to export it later to pass on to another card. As for saving things as objects, I would recommend using the muscle or coolkey applets as they both have 4 files that anything can be saved to. Just put the key in...
- Sat Oct 31, 2015 12:57 pm
- Forum: Questions & Answers
- Topic: Two questions about a simple java card applet
- Replies: 2
- Views: 6373
Re: Two questions about a simple java card applet
The "& 0xFF" is ANDing the CLA byte with FF. It's normally used as a way to isolate one bit or set of bits to see if it's set or not, such as F1 AND checkbyte == 0 would check for any of bits 1 and 5-8 being set. Why in sample you showed they used FF I'm not sure, I'd have to see more ...
- Sat Oct 31, 2015 12:49 pm
- Forum: JCOP Tool
- Topic: JCOP Tools
- Replies: 10
- Views: 72773
Re: JCOP Tools
After asking around, Jcop is built for Indigo or earlier. No one has got it to work(or just don't want to answer me) and since I found other plugins that do work, I'm setting it aside. And the only way to get a working, up-to-date version is thru NXP. <sigh>
- Sat Oct 24, 2015 2:21 pm
- Forum: Algorithm School
- Topic: How to encode an ECDSA Public Key on java card
- Replies: 3
- Views: 8918
Re: How to encode an ECDSA Public Key on java card
If the card you are using doesn't have ECDSA abilities, I would suggest saving it as a byte object or wrapping the key(encrypting it) and then
saving it. It's about the only ways I can think of.
saving it. It's about the only ways I can think of.