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Search found 147 matches

by tay00000
Mon Jul 10, 2017 10:41 am
Forum: Questions & Answers
Topic: Directory Tree of Java Card Filesystem
Replies: 4
Views: 2055

Re: Directory Tree of Java Card Filesystem

Here are some quotes from the JavaCard Applet Developer Guide written by Sun: Support for ISO 7816-4 files is provided by the javacardx.framework package. This is an extension package to the core javacard.* classes which may not be implemented on all Java Card platforms. In essence, you have to impl...
by tay00000
Tue Jul 04, 2017 6:52 am
Forum: Algorithm School
Topic: DES Encryption
Replies: 1
Views: 1390

Re: DES Encryption

Please catch and throw a proper exception. 0x6066 is your own exception code and not the standard defined ISO7816 exception codes.

Please modify your catching of exception by throwing a proper ISO7816 standardized exception otherwise it is very hard to debug.
by tay00000
Sun Jul 02, 2017 9:50 am
Forum: Shopping FAQ
Topic: Java card supporting RSA4096
Replies: 4
Views: 2436

Re: Java card supporting RSA4096

You have very very limited option if you want RSA-4096 bit operations. Here is the only one (but very hard to obtain) hardware that supports JavaCard and 4096-bit RSA. I wish you good luck and all the best attempting to obtain these hardware as thee company is known to be very picky on their custome...
by tay00000
Sun Jul 02, 2017 9:17 am
Forum: Questions & Answers
Topic: javax.crypto.BadPaddingException
Replies: 4
Views: 2276

Re: javax.crypto.BadPaddingException

I noticed some possible programming flaws: // In the constructor: ... RSACipher = Cipher.getInstance(Cipher.ALG_RSA_PKCS1,false); ... //In the process method: ... buffer = apdu.getBuffer(); byte [] buf = null; // <----- buf variable is null, what is it used for ?? // Get the encoded message short nu...
by tay00000
Thu Jun 15, 2017 8:25 pm
Forum: Questions & Answers
Topic: Error 0x643A when installing applet on ACOSJ card
Replies: 7
Views: 2495

Re: Error 0x643A when installing applet on ACOSJ card

Before you continue to attempt to install anymore applet, list the contents of the card first to ensure there is really nothing in the card. After you have listed and ensured that no contents are residing in the card, then you start to load the test applet you have recently created. In order to faci...
by tay00000
Wed Jun 14, 2017 5:51 am
Forum: Questions & Answers
Topic: signPreComputedHash on JC30M48CR
Replies: 4
Views: 2111

Re: signPreComputedHash on JC30M48CR

Your post is simply too brief to allow a more detailed understanding of your problem. Please post your source code that is causing the problem so that we could help. Are there any Status Words that are not 0x9000 that are returned during the operation ?
by tay00000
Tue Jun 13, 2017 10:55 am
Forum: PKIApplet
Topic: The usage of PKI host application combined with PKIApplet in A40CR card
Replies: 7
Views: 4060

Re: The usage of PKI host application combined with PKIApplet in A40CR card

@ThePhoenyx
Do you have a special requirement for using the PKIApplet ?
by tay00000
Tue Jun 13, 2017 8:35 am
Forum: Card Products
Topic: Suggestion for improving the JC10M128C
Replies: 8
Views: 5030

Re: Suggestion for improving the JC10M128C

@JavaCardOS I do have an actual project requiring the above specifications thus my suggestions currently occurring on my end. Due to the lack of suitable cards meeting this requirement, I have to keep searching for reasonably priced cards that fit the above specifications. So far, the only cards I h...
by tay00000
Sun May 28, 2017 5:49 am
Forum: Card Products
Topic: Suggestion for improving the JC10M128C
Replies: 8
Views: 5030

Re: Suggestion for improving the JC10M128C

My applications usually would benefit from having 4 KB RAM while A22CR would only provide about 2.5 KB RAM thus my request to @JavaCardOS to possibly push for a card with around 4 KB RAM, have RSA support and at least 128 KB EEPROM/Flash or more at the very least.
by tay00000
Sun May 28, 2017 2:51 am
Forum: Questions & Answers
Topic: How to get mulitiple certificates from the applet
Replies: 4
Views: 1791

Re: How to get mulitiple certificates from the applet

I will try to go to enough details without turning this into a spoon-feeding session. Create a class object called Certificate. This Certificate class will store a certAlias in byte[] object which you can allocate probably 10 bytes to use as certAlias as well as a certObject in byte[] object with pr...
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