1 files changed, 72 insertions, 0 deletions
diff --git a/prov/src/main/java/org/spongycastle/jcajce/provider/asymmetric/util/KeyUtil.java b/prov/src/main/java/org/spongycastle/jcajce/provider/asymmetric/util/KeyUtil.java
new file mode 100644
index 00000000..d1eb6841
--- /dev/null
+++ b/prov/src/main/java/org/spongycastle/jcajce/provider/asymmetric/util/KeyUtil.java
@@ -0,0 +1,72 @@
+package org.spongycastle.jcajce.provider.asymmetric.util;
+
+import org.spongycastle.asn1.ASN1Encodable;
+import org.spongycastle.asn1.ASN1Encoding;
+import org.spongycastle.asn1.pkcs.PrivateKeyInfo;
+import org.spongycastle.asn1.x509.AlgorithmIdentifier;
+import org.spongycastle.asn1.x509.SubjectPublicKeyInfo;
+
+public class KeyUtil
+{
+    public static byte[] getEncodedSubjectPublicKeyInfo(AlgorithmIdentifier algId, ASN1Encodable keyData)
+    {
+        try
+        {
+            return getEncodedSubjectPublicKeyInfo(new SubjectPublicKeyInfo(algId, keyData));
+        }
+        catch (Exception e)
+        {
+            return null;
+        }
+    }
+
+    public static byte[] getEncodedSubjectPublicKeyInfo(AlgorithmIdentifier algId, byte[] keyData)
+    {
+        try
+        {
+            return getEncodedSubjectPublicKeyInfo(new SubjectPublicKeyInfo(algId, keyData));
+        }
+        catch (Exception e)
+        {
+            return null;
+        }
+    }
+
+    public static byte[] getEncodedSubjectPublicKeyInfo(SubjectPublicKeyInfo info)
+    {
+         try
+         {
+             return info.getEncoded(ASN1Encoding.DER);
+         }
+         catch (Exception e)
+         {
+             return null;
+         }
+    }
+
+    public static byte[] getEncodedPrivateKeyInfo(AlgorithmIdentifier algId, ASN1Encodable privKey)
+    {
+         try
+         {
+             PrivateKeyInfo info = new PrivateKeyInfo(algId, privKey.toASN1Primitive());
+
+             return getEncodedPrivateKeyInfo(info);
+         }
+         catch (Exception e)
+         {
+             return null;
+         }
+    }
+
+    public static byte[] getEncodedPrivateKeyInfo(PrivateKeyInfo info)
+    {
+         try
+         {
+             return info.getEncoded(ASN1Encoding.DER);
+         }
+         catch (Exception e)
+         {
+             return null;
+         }
+    }
+}