Search found 55 matches

by wumindejia
Mon Mar 19, 2018 3:05 am
Forum: Questions & Answers
Topic: What the difference between EEPROM and ROM?
Replies: 1
Views: 1868

Re: What the difference between EEPROM and ROM?

EEPROM (also E2PROM) stands for electrically erasable programmable read-only memory and is a type of non-volatile memory,EEPROMs can be programmed and erased in-circuit, by applying special programming signals. Read-only memory (ROM) is a type of non-volatile memory, ROM cannot be changed after manu...
by wumindejia
Wed Mar 14, 2018 5:00 am
Forum: pyResMan
Topic: encryption keys
Replies: 3
Views: 15699

Re: encryption keys

Kic : Encryption for writing card data
Kid : Verification for writing card data
kik : Encryption for sensitive data
by wumindejia
Fri Jan 12, 2018 4:43 am
Forum: Questions & Answers
Topic: Trying to understand implementation BAC protocol
Replies: 5
Views: 5524

Re: Trying to understand implementation BAC protocol

You can read chapter "4.3 Basic Access Control" and "9.8 Secure Messaging" and "Appendix D to Part 11 WORKED EXAMPLE: BASIC ACCESS CONTROL(INFORMATIVE)" in the 9303_p11_cons_en.pdf of the attachment.
by wumindejia
Fri Nov 25, 2016 3:06 am
Forum: Questions & Answers
Topic: SCP02
Replies: 3
Views: 3398

Re: SCP02

You can refer to annex D/E of the 《GPC_Specification_v2.3.pdf》.
by wumindejia
Thu Nov 24, 2016 5:38 am
Forum: Questions & Answers
Topic: Let bit rate quicker
Replies: 4
Views: 3048

Re: Let bit rate quicker

You can improve frequency of the chip, but the card maybe become unstable. Thanks for your help. How can I improve frequency of the chip? Need i use any tool? You can refer to chapter 8 of the《ISO-IEC 7816-3》 about TA1, and refer to chapter 5 of the 《ISO 14443-4》about TA1. And you need to ask card'...
by wumindejia
Wed Nov 23, 2016 11:57 pm
Forum: Questions & Answers
Topic: Let bit rate quicker
Replies: 4
Views: 3048

Re: Let bit rate quicker

You can improve frequency of the chip, but the card maybe become unstable.
by wumindejia
Mon Nov 21, 2016 5:15 am
Forum: Questions & Answers
Topic: register() method to register my applet
Replies: 2
Views: 2071

Re: register() method to register my applet

is 66554433221101
by wumindejia
Wed Nov 16, 2016 9:56 pm
Forum: Questions & Answers
Topic: Apdu may be illegel
Replies: 4
Views: 2320

Re: Apdu may be illegel

00D3020030350218345FBACE367196E4FEF900CA6CFB7B410621BABA1B28AF660219009DC2B6ECCB7CDE2855E88F6FD8D0B2349588AB503087C45E 00D30200 30 :length of the data field is 48,but "350218345FBACE367196E4FEF900CA6CFB7B410621BABA1B28AF660219009DC2B6ECCB7CDE2855E88F6FD8D0B2349588AB503087C45E" the length i...
by wumindejia
Sun Nov 13, 2016 10:08 pm
Forum: Questions & Answers
Topic: bArray in JCRE
Replies: 3
Views: 2400

Re: bArray in JCRE

You can use short i;
i = (short)(bArray.length); in the install command.
byte[] buf = apdu.getBuffer();
short i = (short)(buf.length); in the process(APDU apdu).
by wumindejia
Tue Nov 08, 2016 1:35 am
Forum: Questions & Answers
Topic: Mifare card
Replies: 3
Views: 2587

Re: Mifare card

if value of the SAK is 0x08, the card is Mifare 1k. if value of the SAK is 0x18, the card is Mifare 4k.
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