diff --git a/ivy.xml b/ivy.xml
index d448897..7d8896a 100644
--- a/ivy.xml
+++ b/ivy.xml
@@ -50,8 +50,8 @@
 		<dependency org="com.jcraft" name="jsch.agentproxy" rev="0.0.6" conf="default,sftp->default"/>
 		<dependency org="com.jcraft" name="jsch.agentproxy.connector-factory" rev="0.0.6" conf="default,sftp->default"/>
 		<dependency org="com.jcraft" name="jsch.agentproxy.jsch" rev="0.0.6" conf="default,sftp->default"/>
-		<dependency org="org.bouncycastle" name="bcpg-jdk14" rev="1.45" conf="default"/>
-        <dependency org="org.bouncycastle" name="bcprov-jdk14" rev="1.45" conf="default"/>
+		<dependency org="org.bouncycastle" name="bcpg-jdk15on" rev="1.52" conf="default"/>
+        <dependency org="org.bouncycastle" name="bcprov-jdk15on" rev="1.52" conf="default"/>
 
 		<!-- Test dependencies -->
 		<dependency org="junit" name="junit" rev="3.8.2" conf="test->default"/>
diff --git a/src/java/org/apache/ivy/plugins/signer/bouncycastle/OpenPGPSignatureGenerator.java b/src/java/org/apache/ivy/plugins/signer/bouncycastle/OpenPGPSignatureGenerator.java
index af7beae..bec8ae4 100644
--- a/src/java/org/apache/ivy/plugins/signer/bouncycastle/OpenPGPSignatureGenerator.java
+++ b/src/java/org/apache/ivy/plugins/signer/bouncycastle/OpenPGPSignatureGenerator.java
@@ -23,16 +23,18 @@ import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
-import java.security.NoSuchAlgorithmException;
-import java.security.NoSuchProviderException;
 import java.security.Security;
-import java.security.SignatureException;
 import java.util.Iterator;
 
 import org.apache.ivy.plugins.signer.SignatureGenerator;
 import org.bouncycastle.bcpg.ArmoredOutputStream;
 import org.bouncycastle.bcpg.BCPGOutputStream;
 import org.bouncycastle.jce.provider.BouncyCastleProvider;
+import org.bouncycastle.openpgp.operator.PBESecretKeyDecryptor;
+import org.bouncycastle.openpgp.operator.bc.BcKeyFingerprintCalculator;
+import org.bouncycastle.openpgp.operator.bc.BcPBESecretKeyDecryptorBuilder;
+import org.bouncycastle.openpgp.operator.bc.BcPGPContentSignerBuilder;
+import org.bouncycastle.openpgp.operator.bc.BcPGPDigestCalculatorProvider;
 import org.bouncycastle.openpgp.PGPException;
 import org.bouncycastle.openpgp.PGPPrivateKey;
 import org.bouncycastle.openpgp.PGPSecretKey;
@@ -101,11 +103,13 @@ public class OpenPGPSignatureGenerator implements SignatureGenerator {
                 pgpSec = readSecretKey(keyIn);
             }
 
-            PGPPrivateKey pgpPrivKey = pgpSec.extractPrivateKey(password.toCharArray(),
-                BouncyCastleProvider.PROVIDER_NAME);
-            PGPSignatureGenerator sGen = new PGPSignatureGenerator(pgpSec.getPublicKey()
-                    .getAlgorithm(), PGPUtil.SHA1, BouncyCastleProvider.PROVIDER_NAME);
-            sGen.initSign(PGPSignature.BINARY_DOCUMENT, pgpPrivKey);
+            PBESecretKeyDecryptor decryptor = new BcPBESecretKeyDecryptorBuilder(
+                new BcPGPDigestCalculatorProvider()).build(password.toCharArray());
+            PGPPrivateKey pgpPrivKey = pgpSec.extractPrivateKey(decryptor);
+            PGPSignatureGenerator sGen = new PGPSignatureGenerator(
+                new BcPGPContentSignerBuilder(pgpSec.getPublicKey()
+                    .getAlgorithm(), PGPUtil.SHA1));
+            sGen.init(PGPSignature.BINARY_DOCUMENT, pgpPrivKey);
 
             in = new FileInputStream(src);
             out = new BCPGOutputStream(new ArmoredOutputStream(new FileOutputStream(dest)));
@@ -116,22 +120,10 @@ public class OpenPGPSignatureGenerator implements SignatureGenerator {
             }
 
             sGen.generate().encode(out);
-        } catch (SignatureException e) {
-            IOException ioexc = new IOException();
-            ioexc.initCause(e);
-            throw ioexc;
         } catch (PGPException e) {
             IOException ioexc = new IOException();
             ioexc.initCause(e);
             throw ioexc;
-        } catch (NoSuchAlgorithmException e) {
-            IOException ioexc = new IOException();
-            ioexc.initCause(e);
-            throw ioexc;
-        } catch (NoSuchProviderException e) {
-            IOException ioexc = new IOException();
-            ioexc.initCause(e);
-            throw ioexc;
         } finally {
             if (out != null) {
                 try {
@@ -156,7 +148,8 @@ public class OpenPGPSignatureGenerator implements SignatureGenerator {
 
     private PGPSecretKey readSecretKey(InputStream in) throws IOException, PGPException {
         in = PGPUtil.getDecoderStream(in);
-        PGPSecretKeyRingCollection pgpSec = new PGPSecretKeyRingCollection(in);
+        PGPSecretKeyRingCollection pgpSec = new PGPSecretKeyRingCollection(in,
+            new BcKeyFingerprintCalculator());
 
         PGPSecretKey key = null;
         for (Iterator it = pgpSec.getKeyRings(); key == null && it.hasNext();) {