How to use .cer file inside Java Code

[koolking]

Can anyone tell me how to use .cer certificate file inside java code.

[pao]

What do you want to do with it? Normally when I've worked with certificates in the past I just loaded them into a keystore\truststore and then referenced that in java. I think there is also a java keystore somewhere within the installation directories of Java.

If you could provide a little more information it might make it easier to help you.

[jobi]

I used .cer file to put a Digital certificate on my pdf file.
I created .cer file by using cmd.

[faisalhameed]

you can use the followng commad to convert .cer file to keystore

1.keytool -import -keystore client.keystore -file WSS.cer
2.Input password for your output file(say abc)

This will create a file named client.keystore
Then you can use it in your java code.

System.setProperty("javax.net.ssl.trustStore", "client.keystore");
System.setProperty("javax.net.ssl.trustStorePasswo rd","abc");

[koolking]

There is a web service built in .Net and running on SSL. I am using axis client to connect to it. First I used a .jks certificate to connect to it. But now I have to use .cer file to connect. I need to be able to connect to the web service. I have used keytool for keystore generation but I am not able to connect to web service.

I use
keytool -import -keystore client.keystore -file WSS.cer
to generate the keystore and use it in the code using

System.setProperty("javax.net.ssl.keyStore", keystorePath);
System.setProperty("javax.net.ssl.keyStorePassword ", password);

System.setProperty("javax.net.ssl.trustStore", keystorePath);
System.setProperty("javax.net.ssl.trustStorePasswo rd", password);

But I am not able to connect to it.

Can someone please guide me how to connect to it.

[faisalhameed]

what does it means??
"But I am not able to connect to it"
What message/Exception you are getting?
and you only need to set the following

System.setProperty("javax.net.ssl.trustStore", keystorePath);
System.setProperty("javax.net.ssl.trustStorePasswo rd", password);

Don't use

System.setProperty("javax.net.ssl.keyStore", keystorePath);
System.setProperty("javax.net.ssl.keyStorePassword ", password);

[koolking]

I have tried using it but I am getting the following exception


org.apache.axis2.AxisFault: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderE xception: unable to find valid certification path to requested target
at org.apache.axis2.AxisFault.makeFault(AxisFault.jav a:430)
at org.apache.axis2.transport.http.AxisRequestEntity. writeRequest(AxisRequestEntity.java:98)
at org.apache.commons.httpclient.methods.EntityEnclos ingMethod.writeRequestBody(EntityEnclosingMethod.j ava:499)
at org.apache.commons.httpclient.HttpMethodBase.write Request(HttpMethodBase.java:2114)
at org.apache.commons.httpclient.HttpMethodBase.execu te(HttpMethodBase.java:1096)
at org.apache.commons.httpclient.HttpMethodDirector.e xecuteWithRetry(HttpMethodDirector.java:398)[INFO] Unable to sendViaPost to url[https://csr.pmex.com.pk/ncel.webserv...radedata.asmx]
org.apache.axis2.AxisFault: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderE xception: unable to find valid certification path to requested target
at org.apache.axis2.AxisFault.makeFault(AxisFault.jav a:430)
at org.apache.axis2.transport.http.AxisRequestEntity. writeRequest(AxisRequestEntity.java:98)
at org.apache.commons.httpclient.methods.EntityEnclos ingMethod.writeRequestBody(EntityEnclosingMethod.j ava:499)
at org.apache.commons.httpclient.HttpMethodBase.write Request(HttpMethodBase.java:2114)
at org.apache.commons.httpclient.HttpMethodBase.execu te(HttpMethodBase.java:1096)
at org.apache.commons.httpclient.HttpMethodDirector.e xecuteWithRetry(HttpMethodDirector.java:398)
at org.apache.commons.httpclient.HttpMethodDirector.e xecuteMethod(HttpMethodDirector.java:171)
at org.apache.commons.httpclient.HttpClient.executeMe thod(HttpClient.java:397)
at org.apache.commons.httpclient.HttpClient.executeMe thod(HttpClient.java:346)
at org.apache.axis2.transport.http.AbstractHTTPSender .executeMethod(AbstractHTTPSender.java:560)
at org.apache.axis2.transport.http.HTTPSender.sendVia Post(HTTPSender.java:199)
at org.apache.axis2.transport.http.HTTPSender.send(HT TPSender.java:76)
at org.apache.axis2.transport.http.CommonsHTTPTranspo rtSender.writeMessageWithCommons(CommonsHTTPTransp ortSender.java:400)
at org.apache.axis2.transport.http.CommonsHTTPTranspo rtSender.invoke(CommonsHTTPTransportSender.java:22 5)
at org.apache.axis2.engine.AxisEngine.send(AxisEngine .java:438)
at org.apache.axis2.description.OutInAxisOperationCli ent.send(OutInAxisOperation.java:402)
at org.apache.axis2.description.OutInAxisOperationCli ent.executeImpl(OutInAxisOperation.java:229)
at org.apache.axis2.client.OperationClient.execute(Op erationClient.java:165)
at org.tempuri.WSTradeDataStub.getFxRates(WSTradeData Stub.java:2151)
at Driver2.main(Driver2.java:179)
Caused by: javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderE xception: unable to find valid certification path to requested target
at com.sun.net.ssl.internal.ssl.Alerts.getSSLExceptio n(Alerts.java:174)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.fatal(S SLSocketImpl.java:1611)
at com.sun.net.ssl.internal.ssl.Handshaker.fatalSE(Ha ndshaker.java:187)
at com.sun.net.ssl.internal.ssl.Handshaker.fatalSE(Ha ndshaker.java:181)
at com.sun.net.ssl.internal.ssl.ClientHandshaker.serv erCertificate(ClientHandshaker.java:1035)
at com.sun.net.ssl.internal.ssl.ClientHandshaker.proc essMessage(ClientHandshaker.java:124)
at com.sun.net.ssl.internal.ssl.Handshaker.processLoo p(Handshaker.java:516)
at com.sun.net.ssl.internal.ssl.Handshaker.process_re cord(Handshaker.java:454)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.readRec ord(SSLSocketImpl.java:884)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.perform InitialHandshake(SSLSocketImpl.java:1112)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.writeRe cord(SSLSocketImpl.java:623)
at com.sun.net.ssl.internal.ssl.AppOutputStream.write (AppOutputStream.java:59)
at java.io.BufferedOutputStream.flushBuffer(BufferedO utputStream.java:65)
at java.io.BufferedOutputStream.flush(BufferedOutputS tream.java:123)
at org.apache.axis2.transport.http.AxisRequestEntity. writeRequest(AxisRequestEntity.java:94)
... 18 more
Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderE xception: unable to find valid certification path to requested target
at sun.security.validator.PKIXValidator.doBuild(PKIXV alidator.java:285)
at sun.security.validator.PKIXValidator.engineValidat e(PKIXValidator.java:191)
at sun.security.validator.Validator.validate(Validato r.java:218)
at com.sun.net.ssl.internal.ssl.X509TrustManagerImpl. validate(X509TrustManagerImpl.java:126)
at com.sun.net.ssl.internal.ssl.X509TrustManagerImpl. checkServerTrusted(X509TrustManagerImpl.java:209)
at com.sun.net.ssl.internal.ssl.X509TrustManagerImpl. checkServerTrusted(X509TrustManagerImpl.java:249)
at com.sun.net.ssl.internal.ssl.ClientHandshaker.serv erCertificate(ClientHandshaker.java:1014)
... 28 more
Caused by: sun.security.provider.certpath.SunCertPathBuilderE xception: unable to find valid certification path to requested target
at sun.security.provider.certpath.SunCertPathBuilder. engineBuild(SunCertPathBuilder.java:174)
at java.security.cert.CertPathBuilder.build(CertPathB uilder.java:238)
at sun.security.validator.PKIXValidator.doBuild(PKIXV alidator.java:280)
... 34 more

at org.apache.commons.httpclient.HttpMethodDirector.e xecuteMethod(HttpMethodDirector.java:171)
at org.apache.commons.httpclient.HttpClient.executeMe thod(HttpClient.java:397)
at org.apache.commons.httpclient.HttpClient.executeMe thod(HttpClient.java:346)
at org.apache.axis2.transport.http.AbstractHTTPSender .executeMethod(AbstractHTTPSender.java:560)
at org.apache.axis2.transport.http.HTTPSender.sendVia Post(HTTPSender.java:199)
at org.apache.axis2.transport.http.HTTPSender.send(HT TPSender.java:76)
at org.apache.axis2.transport.http.CommonsHTTPTranspo rtSender.writeMessageWithCommons(CommonsHTTPTransp ortSender.java:400)
at org.apache.axis2.transport.http.CommonsHTTPTranspo rtSender.invoke(CommonsHTTPTransportSender.java:22 5)
at org.apache.axis2.engine.AxisEngine.send(AxisEngine .java:438)
at org.apache.axis2.description.OutInAxisOperationCli ent.send(OutInAxisOperation.java:402)
at org.apache.axis2.description.OutInAxisOperationCli ent.executeImpl(OutInAxisOperation.java:229)
at org.apache.axis2.client.OperationClient.execute(Op erationClient.java:165)
at org.tempuri.WSTradeDataStub.getFxRates(WSTradeData Stub.java:2151)
at Driver2.main(Driver2.java:179)
Caused by: javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderE xception: unable to find valid certification path to requested target
at com.sun.net.ssl.internal.ssl.Alerts.getSSLExceptio n(Alerts.java:174)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.fatal(S SLSocketImpl.java:1611)
at com.sun.net.ssl.internal.ssl.Handshaker.fatalSE(Ha ndshaker.java:187)
at com.sun.net.ssl.internal.ssl.Handshaker.fatalSE(Ha ndshaker.java:181)
at com.sun.net.ssl.internal.ssl.ClientHandshaker.serv erCertificate(ClientHandshaker.java:1035)
at com.sun.net.ssl.internal.ssl.ClientHandshaker.proc essMessage(ClientHandshaker.java:124)
at com.sun.net.ssl.internal.ssl.Handshaker.processLoo p(Handshaker.java:516)
at com.sun.net.ssl.internal.ssl.Handshaker.process_re cord(Handshaker.java:454)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.readRec ord(SSLSocketImpl.java:884)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.perform InitialHandshake(SSLSocketImpl.java:1112)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.writeRe cord(SSLSocketImpl.java:623)
at com.sun.net.ssl.internal.ssl.AppOutputStream.write (AppOutputStream.java:59)
at java.io.BufferedOutputStream.flushBuffer(BufferedO utputStream.java:65)
at java.io.BufferedOutputStream.flush(BufferedOutputS tream.java:123)
at org.apache.axis2.transport.http.AxisRequestEntity. writeRequest(AxisRequestEntity.java:94)
... 18 more
Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderE xception: unable to find valid certification path to requested target
at sun.security.validator.PKIXValidator.doBuild(PKIXV alidator.java:285)
at sun.security.validator.PKIXValidator.engineValidat e(PKIXValidator.java:191)
at sun.security.validator.Validator.validate(Validato r.java:218)
at com.sun.net.ssl.internal.ssl.X509TrustManagerImpl. validate(X509TrustManagerImpl.java:126)
at com.sun.net.ssl.internal.ssl.X509TrustManagerImpl. checkServerTrusted(X509TrustManagerImpl.java:209)
at com.sun.net.ssl.internal.ssl.X509TrustManagerImpl. checkServerTrusted(X509TrustManagerImpl.java:249)
at com.sun.net.ssl.internal.ssl.ClientHandshaker.serv erCertificate(ClientHandshaker.java:1014)
... 28 more
Caused by: sun.security.provider.certpath.SunCertPathBuilderE xception: unable to find valid certification path to requested target
at sun.security.provider.certpath.SunCertPathBuilder. engineBuild(SunCertPathBuilder.java:174)
at java.security.cert.CertPathBuilder.build(CertPathB uilder.java:238)
at sun.security.validator.PKIXValidator.doBuild(PKIXV alidator.java:280)
... 34 more