java.io.IOException：DER长度的简短读取

时间：2017-07-25 12:39:58

标签： java javafx certificate javafx-8 x509certificate

我正在尝试创建一个可以读取x509证书信息的Java应用程序，并将其显示在$a = array( 'a', 'b', 'c', 'd', 'e' ); $b = array( 'x' ); array_splice( $a, 3, 0, $b ); // splice in at position 3 中。

但是，当我尝试使用以下代码显示这些信息时，我遇到了问题

TableView

当我尝试执行它时，我有以下异常：@FXML private void handleHDD() throws CertificateException, IOException{ String userDir = System.getProperty("user.home"); File folder = new File(userDir +"\\Desktop\\Certificate_Folder"); File[] certificates = folder.listFiles(); if (certificates!=null){ String columnHeader[] = {"Nom","Version","N°série","Algorithme de signature","Emetteur","Valide à partir de","Valide jusqu'au","Objet","Clé publique"}; int sizeColumns = 9; for (File file : certificates){ if(file.isFile()){ CertificateFactory cf = CertificateFactory.getInstance("X.509"); InputStream input = new FileInputStream(file); X509Certificate cert = (X509Certificate) cf.generateCertificate(input); input.close(); for (int j = 0; j < sizeColumns; j++) { data.add(new CertificateModel(file.getName().replace(".der", ""),cert.getVersion(),cert.getSerialNumber().toString(),cert.getSigAlgName(),cert.getIssuerDN().toString(),cert.getNotBefore(),cert.getNotAfter(),cert.getSubjectDN().toString(),cert.getPublicKey().toString())); TableColumn col = new TableColumn(); col.setText(columnHeader[j]); col.setMinWidth(200); col.setCellValueFactory(new PropertyValueFactory<CertificateModel, String>(columnHeader[j])); table.getColumns().addAll(col); } table.setItems(data); } } } }

这是完整的异常堆栈：

java.security.cert.CertificateException

CertificateOverview.java的第98行是

Exception in thread "JavaFX Application Thread" java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
at javafx.fxml.FXMLLoader$MethodHandler.invoke(FXMLLoader.java:1774)
at javafx.fxml.FXMLLoader$ControllerMethodEventHandler.handle(FXMLLoader.java:1657)
at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:86)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:54)
at javafx.event.Event.fireEvent(Event.java:198)
at javafx.scene.Scene$ClickGenerator.postProcess(Scene.java:3470)
at javafx.scene.Scene$ClickGenerator.access$8100(Scene.java:3398)
at javafx.scene.Scene$MouseHandler.process(Scene.java:3766)
at javafx.scene.Scene$MouseHandler.access$1500(Scene.java:3485)
at javafx.scene.Scene.impl_processMouseEvent(Scene.java:1762)
at javafx.scene.Scene$ScenePeerListener.mouseEvent(Scene.java:2494)
at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:381)
at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:295)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.tk.quantum.GlassViewEventHandler.lambda$handleMouseEvent$354(GlassViewEventHandler.java:417)
at com.sun.javafx.tk.quantum.QuantumToolkit.runWithoutRenderLock(QuantumToolkit.java:389)
at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(GlassViewEventHandler.java:416)
at com.sun.glass.ui.View.handleMouseEvent(View.java:555)
at com.sun.glass.ui.View.notifyMouse(View.java:937)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null$148(WinApplication.java:191)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.reflect.InvocationTargetException
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at sun.reflect.misc.Trampoline.invoke(MethodUtil.java:71)
    at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at sun.reflect.misc.MethodUtil.invoke(MethodUtil.java:275)
    at javafx.fxml.FXMLLoader$MethodHandler.invoke(FXMLLoader.java:1771)
    ... 33 more
Caused by: java.security.cert.CertificateException: Unable to initialize, java.io.IOException: Short read of DER length
    at sun.security.x509.X509CertImpl.<init>(X509CertImpl.java:198)
    at sun.security.provider.X509Factory.engineGenerateCertificate(X509Factory.java:102)
    at java.security.cert.CertificateFactory.generateCertificate(CertificateFactory.java:339)
    at cm.camgovca.view.CertificateOverviewController.handleHDD(CertificateOverviewController.java:98)
    ... 43 more
Caused by: java.io.IOException: Short read of DER length
    at sun.security.util.DerInputStream.getLength(DerInputStream.java:582)
    at sun.security.util.DerValue.<init>(DerValue.java:252)
    at sun.security.util.DerInputStream.getDerValue(DerInputStream.java:451)
    at sun.security.x509.X509CertImpl.parse(X509CertImpl.java:1784)
    at sun.security.x509.X509CertImpl.<init>(X509CertImpl.java:195)
    ... 46 more

我的证书是DER编码（.der）

2 个答案:

答案 0 :(得分：1)

如果你查看CertificateFactory#generateCertificate的文档，它会说：

  

抛出：CertificateException - 解析错误。

因此，正如评论中所建议的那样，很可能您的证书文件不是预期的格式。

特别是文档中的以下行可能会引起关注：

  

对于X.509证书的证书工厂，inStream中提供的证书必须是DER编码的，并且可以二进制或可打印（Base64）编码提供。如果证书是以Base64编码提供的，那么它必须在开头由----- BEGIN CERTIFICATE -----限制，并且最后必须以----- END CERTIFICATE结束----- 。

如果发布带有详细异常消息的异常堆栈，我们可能会提供更多帮助。

答案 1 :(得分：1)

如果定义了密钥库，请确保它在定义的位置，并且应用程序可以读取它。

在我的情况下，该提示在堆栈跟踪中稍低一些（“ java.security.KeyStore.load”）：

Caused by: java.io.IOException: Short read of DER length
at sun.security.util.DerInputStream.getLength(DerInputStream.java:582) ~[na:1.8.0_212]
at sun.security.util.DerValue.init(DerValue.java:391) ~[na:1.8.0_212]
at sun.security.util.DerValue.<init>(DerValue.java:332) ~[na:1.8.0_212]
at sun.security.util.DerValue.<init>(DerValue.java:345) ~[na:1.8.0_212]
at sun.security.pkcs12.PKCS12KeyStore.engineLoad(PKCS12KeyStore.java:1938) ~[na:1.8.0_212]
at java.security.KeyStore.load(KeyStore.java:1445) ~[na:1.8.0_212]
at org.apache.tomcat.util.security.KeyStoreUtil.load(KeyStoreUtil.java:67) ~[tomcat-embed-core-9.0.27.jar!/:9.0.27]
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