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.
JCIDE related questions and answers.
Moderators: product, kuafu
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frollant
- Posts: 2
- Joined: Thu Feb 07, 2019 1:49 pm
- Points :42
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Contact:
Post
by frollant » Tue Feb 12, 2019 6:50 pm
Hi,
I am trying to develop a basic applet that performs a HMAC SHA-256 operation.
I am debugging the applet with
pyApdutool and
JCIDE.
When executing this line :
Code: Select all
signatureAlgorithm = Signature.getInstance(Signature.ALG_HMAC_SHA256, false);
an exception CryptoException.NO_SUCH_ALGORITHM is thrown.
I tried with other values like Signature.ALG_HMAC_SHA1 and Signature.ALG_HMAC_MD5, and I still get an exception.
I am using JavaCard 2.2.2 API.
Could anybody tell me what am I missing ?
Thanks very much.
Franck
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Noad99
- Posts: 1
- Joined: Tue Feb 12, 2019 11:24 pm
- Points :10
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Contact:
Post
by Noad99 » Tue Feb 12, 2019 11:31 pm
I have written a simple test applet, the piece of code just as below.
The version of my development is
JCKit_JAVACOS_1.0.5.39.exe. If you have other testing results, please let me know.
It seems the
JCIDE of my version does not support yet. The algorithms are a loadable component which can be customized by card os vendor.
Code: Select all
int nErrCount=0;
try {
Signature signatureAlgorithm = Signature.getInstance(Signature.ALG_HMAC_MD5, false);
} catch (CryptoException e)
{
if (e.getReason() == CryptoException.NO_SUCH_ALGORITHM) {
nErrCount++;
}
}
try {
Signature signatureAlgorithm = Signature.getInstance(Signature.ALG_HMAC_SHA1, false);
} catch (CryptoException e)
{
if (e.getReason() == CryptoException.NO_SUCH_ALGORITHM) {
nErrCount++;
}
}
try {
Signature signatureAlgorithm = Signature.getInstance(Signature.ALG_HMAC_SHA_256, false);
} catch (CryptoException e)
{
if (e.getReason() == CryptoException.NO_SUCH_ALGORITHM) {
nErrCount++;
}
}
int r = nErrCount;
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kuafu
- Posts: 317
- Joined: Thu Jun 25, 2015 2:09 am
- Points :4555
-
Contact:
Post
by kuafu » Wed Feb 13, 2019 3:35 am
Please try
JCKit_JAVACOS_Beta_3.0.0.5.
Please select simulator:JCRE 3.0.5, and using jc kit 3.xx or jc kit 2.x.x
You do not have the required permissions to view the files attached to this post. Please
login first.
well
-
kuafu
- Posts: 317
- Joined: Thu Jun 25, 2015 2:09 am
- Points :4555
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Contact:
Post
by kuafu » Wed Feb 13, 2019 3:43 am
frollant wrote: ↑Tue Feb 12, 2019 6:50 pm
Hi,
I am trying to develop a basic applet that performs a HMAC SHA-256 operation.
I am debugging the applet with
pyApdutool and
JCIDE.
When executing this line :
Code: Select all
signatureAlgorithm = Signature.getInstance(Signature.ALG_HMAC_SHA256, false);
an exception CryptoException.NO_SUCH_ALGORITHM is thrown.
I tried with other values like Signature.ALG_HMAC_SHA1 and Signature.ALG_HMAC_MD5, and I still get an exception.
I am using JavaCard 2.2.2 API.
Could anybody tell me what am I missing ?
Thanks very much.
Franck
How to change javacard api version ? The answer is here .
viewtopic.php?f=3&t=1944
well
-
kuafu
- Posts: 317
- Joined: Thu Jun 25, 2015 2:09 am
- Points :4555
-
Contact:
Post
by kuafu » Wed Feb 13, 2019 3:46 am
Noad99 wrote: ↑Tue Feb 12, 2019 11:31 pm
I have written a simple test applet, the piece of code just as below.
The version of my development is
JCKit_JAVACOS_1.0.5.39.exe. If you have other testing results, please let me know.
It seems the
JCIDE of my version does not support yet. The algorithms are a loadable component which can be customized by card os vendor.
Code: Select all
int nErrCount=0;
try {
Signature signatureAlgorithm = Signature.getInstance(Signature.ALG_HMAC_MD5, false);
} catch (CryptoException e)
{
if (e.getReason() == CryptoException.NO_SUCH_ALGORITHM) {
nErrCount++;
}
}
try {
Signature signatureAlgorithm = Signature.getInstance(Signature.ALG_HMAC_SHA1, false);
} catch (CryptoException e)
{
if (e.getReason() == CryptoException.NO_SUCH_ALGORITHM) {
nErrCount++;
}
}
try {
Signature signatureAlgorithm = Signature.getInstance(Signature.ALG_HMAC_SHA_256, false);
} catch (CryptoException e)
{
if (e.getReason() == CryptoException.NO_SUCH_ALGORITHM) {
nErrCount++;
}
}
int r = nErrCount;
It's quite different between JAVACOS_1.0.5.39.exe and
JCKit_JAVACOS_Beta_3.0.0.5 . Now we are lacking of staff to maintain the old version (such as vesion 1.x.x ) .
well
-
frollant
- Posts: 2
- Joined: Thu Feb 07, 2019 1:49 pm
- Points :42
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Contact:
Post
by frollant » Mon Feb 18, 2019 5:53 pm
Thank you very much !!
Indeed, I did not select a simulator in the first place.
This is working better now. I am getting data out of my hash function.
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kuafu
- Posts: 317
- Joined: Thu Jun 25, 2015 2:09 am
- Points :4555
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Contact:
Post
by kuafu » Mon Feb 18, 2019 8:20 pm
We had found some bug on watch view and local view ,we had fix it,and testing it now, and will release a new version soon.
well
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