1 files changed, 47 insertions, 0 deletions
diff --git a/libraries/spongycastle/prov/src/main/java/org/spongycastle/pqc/jcajce/provider/mceliece/McElieceCCA2KeysToParams.java b/libraries/spongycastle/prov/src/main/java/org/spongycastle/pqc/jcajce/provider/mceliece/McElieceCCA2KeysToParams.java
new file mode 100644
index 000000000..a733d2a00
--- /dev/null
+++ b/libraries/spongycastle/prov/src/main/java/org/spongycastle/pqc/jcajce/provider/mceliece/McElieceCCA2KeysToParams.java
@@ -0,0 +1,47 @@
+package org.spongycastle.pqc.jcajce.provider.mceliece;
+
+import java.security.InvalidKeyException;
+import java.security.PrivateKey;
+import java.security.PublicKey;
+
+import org.spongycastle.crypto.params.AsymmetricKeyParameter;
+import org.spongycastle.pqc.crypto.mceliece.McElieceCCA2PrivateKeyParameters;
+import org.spongycastle.pqc.crypto.mceliece.McElieceCCA2PublicKeyParameters;
+
+/**
+ * utility class for converting jce/jca McElieceCCA2 objects
+ * objects into their org.spongycastle.crypto counterparts.
+ */
+public class McElieceCCA2KeysToParams
+{
+
+
+    static public AsymmetricKeyParameter generatePublicKeyParameter(
+        PublicKey key)
+        throws InvalidKeyException
+    {
+        if (key instanceof BCMcElieceCCA2PublicKey)
+        {
+            BCMcElieceCCA2PublicKey k = (BCMcElieceCCA2PublicKey)key;
+
+            return new McElieceCCA2PublicKeyParameters(k.getOIDString(), k.getN(), k.getT(), k.getG(), k.getMcElieceCCA2Parameters());
+        }
+
+        throw new InvalidKeyException("can't identify McElieceCCA2 public key: " + key.getClass().getName());
+    }
+
+
+    static public AsymmetricKeyParameter generatePrivateKeyParameter(
+        PrivateKey key)
+        throws InvalidKeyException
+    {
+        if (key instanceof BCMcElieceCCA2PrivateKey)
+        {
+            BCMcElieceCCA2PrivateKey k = (BCMcElieceCCA2PrivateKey)key;
+            return new McElieceCCA2PrivateKeyParameters(k.getOIDString(), k.getN(), k.getK(), k.getField(), k.getGoppaPoly(),
+                k.getP(), k.getH(), k.getQInv(), k.getMcElieceCCA2Parameters());
+        }
+
+        throw new InvalidKeyException("can't identify McElieceCCA2 private key.");
+    }
+}