Christmas is coming soon! To thank for the support from all our dear customers, Christmas promotional activity is going on in JavaCardOS online store. For more activities details, please check this post.

Search found 7 matches

by zxt12300
Thu Jan 10, 2019 4:41 am
Forum: Products Release
Topic: JCKit JAVACOS_Beta_3.0.0.5 released
Replies: 2
Views: 125

Re: JCKit JAVACOS_Beta_3.0.0.5 released

A bug found:
Signature.ALG_HMAC_SHA1 and Signature.ALG_HMAC_SHA_256 not be supported on JCKit JAVACOS_Beta_3.0.0.5.
So, the Applet using the HMAC-SHA alg can not be installed sucessfully.
Please fix it, thanks.
by zxt12300
Thu Dec 20, 2018 11:23 pm
Forum: Communication
Topic: Android Application to send and receive APDU commands and Responses
Replies: 1
Views: 987

Re: Android Application to send and receive APDU commands and Responses

"Open Mobile API" can help you, and you must have a NFC phone.
by zxt12300
Thu Dec 20, 2018 11:15 pm
Forum: Communication
Topic: Are there functions like BigInteger.modPow, modMul in JavaCard?
Replies: 5
Views: 2070

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

some API methonds have been provided in JAVACARD 3.0 , such as javacardx.framework.math
by zxt12300
Thu Dec 20, 2018 11:09 pm
Forum: Communication
Topic: SIM card on Android System
Replies: 3
Views: 1068

Re: SIM card on Android System

It's so easy. You may develope a STK applet on SIM card, when the SIM card pluged into Phone, the STK applet can send a LauchBrowser proactive command to Phone with URL.
by zxt12300
Thu Dec 20, 2018 10:59 pm
Forum: Applets Development Guide
Topic: .net programming for developing applet
Replies: 2
Views: 710

Re: .net programming for developing applet

Javacard is popular, .Net card is not a good selection.
by zxt12300
Thu Dec 20, 2018 10:34 pm
Forum: Questions & Answers
Topic: What's the use of GlobalArray?
Replies: 2
Views: 239

Re: What's the use of GlobalArray?

GlobalArrary is global buffer, it can be used among applets, never be forbidden by JCRE firewall. Some api methond have been provided in JAVACARD 3.0 API document.
APUD array is global buffer, that's right.
by zxt12300
Thu Dec 20, 2018 10:24 pm
Forum: Open Source Applets
Topic: Smart Card Bitcoin Wallet
Replies: 4
Views: 5698

Re: Smart Card Bitcoin Wallet

Thanks for your share, do you have some resource project about BIP39 of HDwallet?
JavaCard OS : Disclaimer