1 files changed, 103 insertions, 0 deletions
diff --git a/pkix/src/main/java/org/spongycastle/cert/jcajce/JcaX509CRLConverter.java b/pkix/src/main/java/org/spongycastle/cert/jcajce/JcaX509CRLConverter.java
new file mode 100644
index 00000000..7040f1aa
--- /dev/null
+++ b/pkix/src/main/java/org/spongycastle/cert/jcajce/JcaX509CRLConverter.java
@@ -0,0 +1,103 @@
+package org.spongycastle.cert.jcajce;
+
+import java.io.ByteArrayInputStream;
+import java.io.IOException;
+import java.security.NoSuchProviderException;
+import java.security.Provider;
+import java.security.cert.CRLException;
+import java.security.cert.CertificateException;
+import java.security.cert.CertificateFactory;
+import java.security.cert.X509CRL;
+
+import org.spongycastle.cert.X509CRLHolder;
+
+/**
+ * Class for converting an X509CRLHolder into a corresponding X509CRL object tied to a
+ * particular JCA provider.
+ */
+public class JcaX509CRLConverter
+{
+    private CertHelper helper = new DefaultCertHelper();
+
+    /**
+     * Base constructor, configure with the default provider.
+     */
+    public JcaX509CRLConverter()
+    {
+        this.helper = new DefaultCertHelper();
+    }
+
+    /**
+     * Set the provider to use from a Provider object.
+     *
+     * @param provider the provider to use.
+     * @return the converter instance.
+     */
+    public JcaX509CRLConverter setProvider(Provider provider)
+    {
+        this.helper = new ProviderCertHelper(provider);
+
+        return this;
+    }
+
+    /**
+     * Set the provider to use by name.
+     *
+     * @param providerName name of the provider to use.
+     * @return the converter instance.
+     */
+    public JcaX509CRLConverter setProvider(String providerName)
+    {
+        this.helper = new NamedCertHelper(providerName);
+
+        return this;
+    }
+
+    /**
+     * Use the configured converter to produce a X509CRL object from a X509CRLHolder object.
+     *
+     * @param crlHolder  the holder to be converted
+     * @return a X509CRL object
+     * @throws CRLException if the conversion is unable to be made.
+     */
+    public X509CRL getCRL(X509CRLHolder crlHolder)
+        throws CRLException
+    {
+        try
+        {
+            CertificateFactory cFact = helper.getCertificateFactory("X.509");
+
+            return (X509CRL)cFact.generateCRL(new ByteArrayInputStream(crlHolder.getEncoded()));
+        }
+        catch (IOException e)
+        {
+            throw new ExCRLException("exception parsing certificate: " + e.getMessage(), e);
+        }
+        catch (NoSuchProviderException e)
+        {
+            throw new ExCRLException("cannot find required provider:" + e.getMessage(), e);
+        }
+        catch (CertificateException e)
+        {
+            throw new ExCRLException("cannot create factory: " + e.getMessage(), e);
+        }
+    }
+
+    private class ExCRLException
+        extends CRLException
+    {
+        private Throwable cause;
+
+        public ExCRLException(String msg, Throwable cause)
+        {
+            super(msg);
+
+            this.cause = cause;
+        }
+
+        public Throwable getCause()
+        {
+            return cause;
+        }
+    }
+}