1 files changed, 23 insertions, 0 deletions
diff --git a/libraries/spongycastle/pkix/src/main/java/org/spongycastle/cms/bc/CMSUtils.java b/libraries/spongycastle/pkix/src/main/java/org/spongycastle/cms/bc/CMSUtils.java
new file mode 100644
index 000000000..90035ec1c
--- /dev/null
+++ b/libraries/spongycastle/pkix/src/main/java/org/spongycastle/cms/bc/CMSUtils.java
@@ -0,0 +1,23 @@
+package org.spongycastle.cms.bc;
+
+import org.spongycastle.crypto.CipherParameters;
+import org.spongycastle.crypto.params.KeyParameter;
+import org.spongycastle.operator.GenericKey;
+
+class CMSUtils
+{
+    static CipherParameters getBcKey(GenericKey key)
+    {
+        if (key.getRepresentation() instanceof CipherParameters)
+        {
+            return (CipherParameters)key.getRepresentation();
+        }
+
+        if (key.getRepresentation() instanceof byte[])
+        {
+            return new KeyParameter((byte[])key.getRepresentation());
+        }
+
+        throw new IllegalArgumentException("unknown generic key type");
+    }
+}