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Search found 628 matches

by UNKNwYSHSA
Sat Sep 16, 2017 11:50 pm
Forum: Communication
Topic: Are there functions like BigInteger.modPow, modMul in JavaCard?
Replies: 4
Views: 1103

Re: Are there functions like BigInteger.modPow, modMul in JavaCard?

You can ask card provider to implemente BigInteger functions into CardOS.
JavaCardOS can do that. You can contact them for your requirement. (Through email: javacardos@gmail.com)
by UNKNwYSHSA
Sat Sep 16, 2017 11:45 pm
Forum: Questions & Answers
Topic: Store 16 Byte Key
Replies: 2
Views: 243

Re: Store 16 Byte Key

without using Byte array.

What are you thinking of this?
by UNKNwYSHSA
Sat Sep 02, 2017 8:18 am
Forum: Questions & Answers
Topic: How to get static C-MAC
Replies: 1
Views: 205

Re: How to get static C-MAC

Ask your card provider/manufactor.
by UNKNwYSHSA
Sat Sep 02, 2017 7:34 am
Forum: Other Tools
Topic: GP Verify error: GP init update failed. recv: 6D 00
Replies: 5
Views: 566

Re: GP Verify error: GP init update failed. recv: 6D 00

Hi UNKNwYSHSA Thank you for responding my question. Actually, I am interested to establish secure connection channel and load applet with GP because this will help me to understand. Additionally, I believe that this is a good practice for me because I am fairly new programming in JavaCard and I may...
by UNKNwYSHSA
Sat Aug 05, 2017 1:24 pm
Forum: Card Products
Topic: Extended APDUs on JC10M128C
Replies: 2
Views: 391

Re: Extended APDUs on JC10M128C

Your applet shall extends ExtendedLength interface.
Please refer to this example: https://javacardos.com/wiki/javacard-ap ... munication
by UNKNwYSHSA
Sat Aug 05, 2017 1:19 pm
Forum: Applets Development Guide
Topic: Random number generator
Replies: 2
Views: 451

Re: Random number generator

The argument value of RandomData.getInstance() shall only be RandomData.ALG_PSEUDO_RANDOM or RandomData.ALG_SECURE_RANDOM . And you can use the method generateData() of RandomData instance to generate random bytes, not method nextBytes . Here is the description of class RandomData in JavaCard API sp...
by UNKNwYSHSA
Sat Aug 05, 2017 1:13 pm
Forum: Questions & Answers
Topic: 6F 00
Replies: 1
Views: 188

Re: 6F 00

I am talking with you in the other post.
by UNKNwYSHSA
Sat Aug 05, 2017 1:11 pm
Forum: Questions & Answers
Topic: Xor calculation
Replies: 1
Views: 308

Re: Xor calculation

Please check the length of the responseCode, it's length shall greater or equal to the length of arqc!
by UNKNwYSHSA
Sat Aug 05, 2017 1:10 pm
Forum: Questions & Answers
Topic: What is APDU to read ATR ?
Replies: 12
Views: 1142

Re: What is APDU to read ATR ?

:roll:
You didn't tell me what you want to do using the ATR value?
by UNKNwYSHSA
Sat Aug 05, 2017 1:06 pm
Forum: Other Tools
Topic: GP Verify error: GP init update failed. recv: 6D 00
Replies: 5
Views: 566

Re: GP Verify error: GP init update failed. recv: 6D 00

Do you want to use GP to establish secure channel and load applet to the card? Here is the information of this card: http://shop.sysmocom.de/products/sysmousim-sjs1-4ff And the card manual: https://www.sysmocom.de/manuals/sysmousim-manual.pdf And you can use this tool to upload applet to this card: ...

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