C# X509 usb certificate hangs application
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I'm trying to find out why my application hangs on exit, after the use of a usb token certificate.
Without any try/catch blocks or other logic, the code is:
X509Store s= new X509Store(StoreName.My, StoreLocation.CurrentUser);
s.Open(OpenFlags.OpenExistingOnly);
X509Certificate2 cert = s.Certificates[0];
s.Close();
RSACryptoServiceProvider rsa = cert.PublicKey.Key as RSACryptoServiceProvider;
byte cryptedData = rsa.Encrypt(Encoding.UTF8.GetBytes("test"), true);
rsa = cert.PrivateKey as RSACryptoServiceProvider;
string x = Encoding.UTF8.GetString(rsa.Decrypt(cryptedData, true));
When I run the code inside a button click event, I am prompted for the PIN of the USB token. After I type and confirm the PIN , the variable x == "test", which is to be expected. Therefore encryption and decryption with the token work.
When I close the form, the application just hangs, and, if I click "break all" in VS2017, even visual studio hangs. My guess is that something related to the usb-token cryptography functions is not released/closed.
I've tried, without any luck, with:
Environment.Exit(0);
cert.Reset();
rsa.Clear();
rsa.Dispose();
cert.Dispose();
Any ideas?
Thank you.
c# smartcard x509
asked Nov 23 '18 at 21:07
D.LaurentiuD.Laurentiu
62
add a comment |
I'm trying to find out why my application hangs on exit, after the use of a usb token certificate.
Without any try/catch blocks or other logic, the code is:
X509Store s= new X509Store(StoreName.My, StoreLocation.CurrentUser);
s.Open(OpenFlags.OpenExistingOnly);
X509Certificate2 cert = s.Certificates[0];
s.Close();
RSACryptoServiceProvider rsa = cert.PublicKey.Key as RSACryptoServiceProvider;
byte cryptedData = rsa.Encrypt(Encoding.UTF8.GetBytes("test"), true);
rsa = cert.PrivateKey as RSACryptoServiceProvider;
string x = Encoding.UTF8.GetString(rsa.Decrypt(cryptedData, true));
When I run the code inside a button click event, I am prompted for the PIN of the USB token. After I type and confirm the PIN , the variable x == "test", which is to be expected. Therefore encryption and decryption with the token work.
When I close the form, the application just hangs, and, if I click "break all" in VS2017, even visual studio hangs. My guess is that something related to the usb-token cryptography functions is not released/closed.
I've tried, without any luck, with:
Environment.Exit(0);
cert.Reset();
rsa.Clear();
rsa.Dispose();
cert.Dispose();
Any ideas?
Thank you.
c# smartcard x509
asked Nov 23 '18 at 21:07
D.LaurentiuD.Laurentiu
62
I don't think the issue is with the X509 usb certificate. I may be wrong. I suspect it is with the closing of the form. I bet if you comment out the code posted you will still get the hanging. Is the project a Window Form Project? Do you have only one class in the project? Is the form the main form? I suspect you are getting an unhandled exception during the exit. It sound like it is in the Net Library. I would open in control panel the event viewer and check for exceptions at the time the app was run.
– jdweng
Nov 23 '18 at 22:04
There is no other code inside the application. Commenting the above x509 code causes normal behavior on exit. There is no exception upon exit.
– D.Laurentiu
Nov 24 '18 at 6:24
Did you check the event viewer?
– jdweng
Nov 24 '18 at 8:10
Yes. Unfortunately, there are no entries
– D.Laurentiu
Nov 24 '18 at 8:33
Did you check the processes in Task Manager? I would also try a sniffer like wireshark or fiddler. I suspect it is an issue with a virus checker.
– jdweng
Nov 24 '18 at 8:58
add a comment |
I'm trying to find out why my application hangs on exit, after the use of a usb token certificate.
Without any try/catch blocks or other logic, the code is:
X509Store s= new X509Store(StoreName.My, StoreLocation.CurrentUser);
s.Open(OpenFlags.OpenExistingOnly);
X509Certificate2 cert = s.Certificates[0];
s.Close();
RSACryptoServiceProvider rsa = cert.PublicKey.Key as RSACryptoServiceProvider;
byte cryptedData = rsa.Encrypt(Encoding.UTF8.GetBytes("test"), true);
rsa = cert.PrivateKey as RSACryptoServiceProvider;
string x = Encoding.UTF8.GetString(rsa.Decrypt(cryptedData, true));
When I run the code inside a button click event, I am prompted for the PIN of the USB token. After I type and confirm the PIN , the variable x == "test", which is to be expected. Therefore encryption and decryption with the token work.
When I close the form, the application just hangs, and, if I click "break all" in VS2017, even visual studio hangs. My guess is that something related to the usb-token cryptography functions is not released/closed.
I've tried, without any luck, with:
Environment.Exit(0);
cert.Reset();
rsa.Clear();
rsa.Dispose();
cert.Dispose();
Any ideas?
Thank you.
c# smartcard x509
asked Nov 23 '18 at 21:07
D.LaurentiuD.Laurentiu
62
I'm trying to find out why my application hangs on exit, after the use of a usb token certificate.
Without any try/catch blocks or other logic, the code is:
X509Store s= new X509Store(StoreName.My, StoreLocation.CurrentUser);
s.Open(OpenFlags.OpenExistingOnly);
X509Certificate2 cert = s.Certificates[0];
s.Close();
RSACryptoServiceProvider rsa = cert.PublicKey.Key as RSACryptoServiceProvider;
byte cryptedData = rsa.Encrypt(Encoding.UTF8.GetBytes("test"), true);
rsa = cert.PrivateKey as RSACryptoServiceProvider;
string x = Encoding.UTF8.GetString(rsa.Decrypt(cryptedData, true));
When I run the code inside a button click event, I am prompted for the PIN of the USB token. After I type and confirm the PIN , the variable x == "test", which is to be expected. Therefore encryption and decryption with the token work.
When I close the form, the application just hangs, and, if I click "break all" in VS2017, even visual studio hangs. My guess is that something related to the usb-token cryptography functions is not released/closed.
I've tried, without any luck, with:
Environment.Exit(0);
cert.Reset();
rsa.Clear();
rsa.Dispose();
cert.Dispose();
Any ideas?
Thank you.
c# smartcard x509
c# smartcard x509
asked Nov 23 '18 at 21:07
D.LaurentiuD.Laurentiu
62
asked Nov 23 '18 at 21:07
D.LaurentiuD.Laurentiu
62
asked Nov 23 '18 at 21:07
D.LaurentiuD.Laurentiu
62
asked Nov 23 '18 at 21:07
D.LaurentiuD.Laurentiu
62
asked Nov 23 '18 at 21:07
D.LaurentiuD.Laurentiu
62
62
I don't think the issue is with the X509 usb certificate. I may be wrong. I suspect it is with the closing of the form. I bet if you comment out the code posted you will still get the hanging. Is the project a Window Form Project? Do you have only one class in the project? Is the form the main form? I suspect you are getting an unhandled exception during the exit. It sound like it is in the Net Library. I would open in control panel the event viewer and check for exceptions at the time the app was run.
– jdweng
Nov 23 '18 at 22:04
There is no other code inside the application. Commenting the above x509 code causes normal behavior on exit. There is no exception upon exit.
– D.Laurentiu
Nov 24 '18 at 6:24
Did you check the event viewer?
– jdweng
Nov 24 '18 at 8:10
Yes. Unfortunately, there are no entries
– D.Laurentiu
Nov 24 '18 at 8:33
Did you check the processes in Task Manager? I would also try a sniffer like wireshark or fiddler. I suspect it is an issue with a virus checker.
– jdweng
Nov 24 '18 at 8:58
add a comment |
I don't think the issue is with the X509 usb certificate. I may be wrong. I suspect it is with the closing of the form. I bet if you comment out the code posted you will still get the hanging. Is the project a Window Form Project? Do you have only one class in the project? Is the form the main form? I suspect you are getting an unhandled exception during the exit. It sound like it is in the Net Library. I would open in control panel the event viewer and check for exceptions at the time the app was run.
– jdweng
Nov 23 '18 at 22:04
There is no other code inside the application. Commenting the above x509 code causes normal behavior on exit. There is no exception upon exit.
– D.Laurentiu
Nov 24 '18 at 6:24
Did you check the event viewer?
– jdweng
Nov 24 '18 at 8:10
Yes. Unfortunately, there are no entries
– D.Laurentiu
Nov 24 '18 at 8:33
Did you check the processes in Task Manager? I would also try a sniffer like wireshark or fiddler. I suspect it is an issue with a virus checker.
– jdweng
Nov 24 '18 at 8:58
I don't think the issue is with the X509 usb certificate. I may be wrong. I suspect it is with the closing of the form. I bet if you comment out the code posted you will still get the hanging. Is the project a Window Form Project? Do you have only one class in the project? Is the form the main form? I suspect you are getting an unhandled exception during the exit. It sound like it is in the Net Library. I would open in control panel the event viewer and check for exceptions at the time the app was run.
– jdweng
Nov 23 '18 at 22:04
I don't think the issue is with the X509 usb certificate. I may be wrong. I suspect it is with the closing of the form. I bet if you comment out the code posted you will still get the hanging. Is the project a Window Form Project? Do you have only one class in the project? Is the form the main form? I suspect you are getting an unhandled exception during the exit. It sound like it is in the Net Library. I would open in control panel the event viewer and check for exceptions at the time the app was run.
– jdweng
Nov 23 '18 at 22:04
There is no other code inside the application. Commenting the above x509 code causes normal behavior on exit. There is no exception upon exit.
– D.Laurentiu
Nov 24 '18 at 6:24
There is no other code inside the application. Commenting the above x509 code causes normal behavior on exit. There is no exception upon exit.
– D.Laurentiu
Nov 24 '18 at 6:24
Did you check the event viewer?
– jdweng
Nov 24 '18 at 8:10
Did you check the event viewer?
– jdweng
Nov 24 '18 at 8:10
Yes. Unfortunately, there are no entries
– D.Laurentiu
Nov 24 '18 at 8:33
Yes. Unfortunately, there are no entries
– D.Laurentiu
Nov 24 '18 at 8:33
Did you check the processes in Task Manager? I would also try a sniffer like wireshark or fiddler. I suspect it is an issue with a virus checker.
– jdweng
Nov 24 '18 at 8:58
Did you check the processes in Task Manager? I would also try a sniffer like wireshark or fiddler. I suspect it is an issue with a virus checker.
– jdweng
Nov 24 '18 at 8:58
add a comment |
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I don't think the issue is with the X509 usb certificate. I may be wrong. I suspect it is with the closing of the form. I bet if you comment out the code posted you will still get the hanging. Is the project a Window Form Project? Do you have only one class in the project? Is the form the main form? I suspect you are getting an unhandled exception during the exit. It sound like it is in the Net Library. I would open in control panel the event viewer and check for exceptions at the time the app was run.
– jdweng
Nov 23 '18 at 22:04
There is no other code inside the application. Commenting the above x509 code causes normal behavior on exit. There is no exception upon exit.
– D.Laurentiu
Nov 24 '18 at 6:24
Did you check the event viewer?
– jdweng
Nov 24 '18 at 8:10
Yes. Unfortunately, there are no entries
– D.Laurentiu
Nov 24 '18 at 8:33
Did you check the processes in Task Manager? I would also try a sniffer like wireshark or fiddler. I suspect it is an issue with a virus checker.
– jdweng
Nov 24 '18 at 8:58