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Search found 234 matches

by mabel
Wed Aug 08, 2018 1:41 am
Forum: Questions & Answers
Topic: T0 Parsing
Replies: 9
Views: 459

Re: T0 Parsing

Case2S TPDU: CLA INS P1 P2 Le (1)Le is in line with expectation. CLA INS P1 P2 Le <- Smart Card Reader Card-> DATA SW1 SW2 (2)Le does not meet expectations and does not prompt for data length as well. CLA INS P1 P2 Le <- Smart Card Reader Card -> 67 00 (3)Le does not meet expectations, but prompts ...
by mabel
Wed Aug 08, 2018 1:27 am
Forum: Questions & Answers
Topic: T0 Parsing
Replies: 9
Views: 459

Re: T0 Parsing

6. APDU formats There are 4 kinds of APDU formats Case1: CLA INS P1 P2 Case2: CLA INS P1 P2 Le Case3: CLA INS P1 P2 Lc Data Case4: CLA INS P1 P2 Lc Data Le Case1 TPDU:CLA INS P1 P2 00 CLA INS P1 P2 00 <- Smart Card Reader Card-> SW1 SW2 java code: Case (byte)0x11: break; t0-parsing-fig6.jpg t0-pars...
by mabel
Wed Aug 08, 2018 1:22 am
Forum: Questions & Answers
Topic: T0 Parsing
Replies: 9
Views: 459

Re: T0 Parsing

5. Basic principles of T0 protocol (1) The communication protocol is opened after PPS is completed. (2) The interface device sends a 5-byte command header to the card (3) The card sends process byte. (4) Transfer data in one direction under the control of the process byte Note: Under T0 protocol, b...
by mabel
Thu Jul 26, 2018 2:00 am
Forum: Questions & Answers
Topic: T0 Parsing
Replies: 9
Views: 459

Re: T0 Parsing

3. Introduction to PPS PPS consists of 4 parts: |PPSS|PPS0|PPS1,PPS2,PPS3|PCK| PPSS: 0xFF PPS0(format byte): indicate whether the following PPSx exists and specify the protocol type PPS1 PPS2 PPS3: Communications parameters and so on PCK: check character 4. Basic concept in T0 Character frame in T0...
by mabel
Thu Jul 26, 2018 1:12 am
Forum: Questions & Answers
Topic: T0 Parsing
Replies: 9
Views: 459

T0 Parsing

Just want to write something about T0, welcome any comments. 1. Introduction to JavaCard power-on process The following figure shows the data captured during the JavaCard power-on process. It sent 3B firstly, then ATR value. t0-parsing-fig1.jpg After the JavaCard is powered on, it will be converted ...
by mabel
Sun Feb 25, 2018 8:29 pm
Forum: Questions & Answers
Topic: About the card asymmetric authentication
Replies: 1
Views: 283

Re: About the card asymmetric authentication

If your card supports SCP10, the card manager handles this and is implemented by the card vendor. SCP10 is the only asymmetric authentication protocol in GP.
by mabel
Fri Feb 23, 2018 12:48 pm
Forum: Questions & Answers
Topic: How to start my first hello world applet in java card?
Replies: 2
Views: 407

Re: How to start my first hello world applet in java card?

To learn Java Card, first of all you must need to learn Java Card related Specification,such as Java Card Runtime Environment Specification, Java Card Virtual Machine Specification and so on.
by mabel
Fri Nov 03, 2017 5:55 am
Forum: Shopping FAQ
Topic: Difference between JC10M128C and A22CR card
Replies: 2
Views: 641

Re: Difference between JC10M128C and A22CR card

It's more efficient to check the card product introduction page to know more details by yourself, I think.
by mabel
Wed Oct 18, 2017 10:10 pm
Forum: Questions & Answers
Topic: APDU SELECT communication
Replies: 1
Views: 437

Re: APDU SELECT communication

SELECT command itself for a Java Card is described on the application layer in the corresponding specifications. On the low level only the protocol (T=0/1: ISO7816-3, T=CL: ISO14443) is described . The APDU structure is described in ISO7816-4. The commands described are not supported with the except...
by mabel
Fri Oct 13, 2017 5:49 am
Forum: Questions & Answers
Topic: Doubt about JavaCard Memory
Replies: 3
Views: 535

Re: Doubt about JavaCard Memory

The size of your test array is rather small, so considering all the overhead of executing other bytecodes, the difference is probably going to be difficult to notice.
JavaCard OS : Disclaimer