Our Online Store have the new products: RFID antenna board. Currently it can work with JC10M24R and JCOP4 card chips.
Compared with normal cards, the antenna board module has a smaller size and fixed holes, which is easy to integrate in the IOT(Internet Of Things) project.

Search found 18 matches

by mose05
Mon Aug 14, 2017 6:07 am
Forum: Questions & Answers
Topic: ATS value
Replies: 2
Views: 6519

Re: ATS value

As fa as I know, ISO 14443-4 does not specify what is included in the information field. And also we can not see what protocol is used on top of T=CL from the ATS.
by mose05
Fri Feb 10, 2017 5:12 am
Forum: Questions & Answers
Topic: DES decryption implementation in java and java card
Replies: 3
Views: 7569

Re: DES decryption implementation in java and java card

I know that calling doFinal will give me final result. The problem is that in Java, if input data is less than 16 bytes,there will be no output after calling update . But in javacard it will give output of update method if the input data is more than 8 bytes length. Is there any advantage between th...
by mose05
Thu Feb 09, 2017 11:01 pm
Forum: Questions & Answers
Topic: DES decryption implementation in java and java card
Replies: 3
Views: 7569

DES decryption implementation in java and java card

Recently, I found a difference between DES decryption implementation in java and java card. In UPDATE method, DES CBC (M1, M2, or, PK5) - In java, it need to have at least 16 bytes input to have output data. - In java card, you should have at least 8 byte to have output data. Why does this differenc...
by mose05
Wed Nov 02, 2016 6:07 am
Forum: Card Products
Topic: The pain of using A22CR's RSA function
Replies: 7
Views: 12144

Re: The pain of using A22CR's RSA function

My card is a white card so I don't know the card model. But I know that my card supports this signature algorithm ALG_RSA_SHA_512_PKCS1.
by mose05
Wed Nov 02, 2016 5:22 am
Forum: Card Products
Topic: The pain of using A22CR's RSA function
Replies: 7
Views: 12144

Re: The pain of using A22CR's RSA function

I did a test with my java card. The result of using private key to sign is the same with the signature result of using your own ALG_RSA_SHA256_PKCS1 function code. :D
by mose05
Mon Oct 31, 2016 11:28 pm
Forum: Questions & Answers
Topic: Throw CryptoException when signing
Replies: 12
Views: 16456

Re: Throw CryptoException when signing

UNKNwYSHSA wrote:Same question.


My colleague gave it to me. I don't know the card model either. It's just a white blank card. Sorry.
by mose05
Mon Oct 31, 2016 11:26 pm
Forum: Questions & Answers
Topic: Throw CryptoException when signing
Replies: 12
Views: 16456

Re: Throw CryptoException when signing

tay00000 wrote:Just curious, which card are you using that will support Signature.ALG_RSA_SHA_512_PKCS1 ?

I am interested in getting one too.

My colleague gave it to me. I don't know the card model either. It's just a white blank card. Sorry.
by mose05
Fri Oct 28, 2016 5:12 am
Forum: Questions & Answers
Topic: Throw CryptoException when signing
Replies: 12
Views: 16456

Re: Throw CryptoException when signing

Thanks for all the help. I got it.
by mose05
Fri Oct 28, 2016 3:58 am
Forum: Questions & Answers
Topic: Throw CryptoException when signing
Replies: 12
Views: 16456

Re: Throw CryptoException when signing

mabel wrote:Tell us the Signature algorithm and filler type you used.


Signature algorithm: ALG_RSA_SHA_512_PKCS1

RSA key length: 512bits
by mose05
Thu Oct 27, 2016 11:07 pm
Forum: Questions & Answers
Topic: Throw CryptoException when signing
Replies: 12
Views: 16456

Throw CryptoException when signing

When I used Signature to sign, it always threw CryptoException, reason value is 5. Does anyone have this experience? How can I solve this issue?
Thanks a lot.
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