1 files changed, 53 insertions, 0 deletions
diff --git a/libraries/spongycastle/prov/src/main/java/org/spongycastle/jcajce/JcaJceUtils.java b/libraries/spongycastle/prov/src/main/java/org/spongycastle/jcajce/JcaJceUtils.java
new file mode 100644
index 000000000..8a9f202dd
--- /dev/null
+++ b/libraries/spongycastle/prov/src/main/java/org/spongycastle/jcajce/JcaJceUtils.java
@@ -0,0 +1,53 @@
+package org.spongycastle.jcajce;
+
+import java.io.IOException;
+import java.security.AlgorithmParameters;
+
+import org.spongycastle.asn1.ASN1Encodable;
+import org.spongycastle.asn1.ASN1Primitive;
+
+public class JcaJceUtils
+{
+    private JcaJceUtils()
+    {
+
+    }
+
+    /**
+     * Extract an ASN.1 encodable from an AlgorithmParameters object.
+     *
+     * @param params the object to get the encoding used to create the return value.
+     * @return an ASN.1 object representing the primitives making up the params parameter.
+     * @throws IOException if an encoding cannot be extracted.
+     */
+    public static ASN1Encodable extractParameters(AlgorithmParameters params)
+        throws IOException
+    {
+        // we try ASN.1 explicitly first just in case and then role back to the default.
+        ASN1Encodable asn1Params;
+        try
+        {
+            asn1Params = ASN1Primitive.fromByteArray(params.getEncoded("ASN.1"));
+        }
+        catch (Exception ex)
+        {
+            asn1Params = ASN1Primitive.fromByteArray(params.getEncoded());
+        }
+
+        return asn1Params;
+    }
+
+    public static void loadParameters(AlgorithmParameters params, ASN1Encodable sParams)
+        throws IOException
+    {
+        // we try ASN.1 explicitly first just in case and then role back to the default.
+        try
+        {
+            params.init(sParams.toASN1Primitive().getEncoded(), "ASN.1");
+        }
+        catch (Exception ex)
+        {
+            params.init(sParams.toASN1Primitive().getEncoded());
+        }
+    }
+}