1 files changed, 40 insertions, 0 deletions
diff --git a/libraries/spongycastle/prov/src/main/java/org/spongycastle/jcajce/provider/util/SecretKeyUtil.java b/libraries/spongycastle/prov/src/main/java/org/spongycastle/jcajce/provider/util/SecretKeyUtil.java
new file mode 100644
index 000000000..7d763a21e
--- /dev/null
+++ b/libraries/spongycastle/prov/src/main/java/org/spongycastle/jcajce/provider/util/SecretKeyUtil.java
@@ -0,0 +1,40 @@
+package org.spongycastle.jcajce.provider.util;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import org.spongycastle.asn1.ASN1ObjectIdentifier;
+import org.spongycastle.asn1.nist.NISTObjectIdentifiers;
+import org.spongycastle.asn1.ntt.NTTObjectIdentifiers;
+import org.spongycastle.asn1.pkcs.PKCSObjectIdentifiers;
+import org.spongycastle.util.Integers;
+
+public class SecretKeyUtil
+{
+    private static Map keySizes = new HashMap();
+
+    static
+    {
+        keySizes.put(PKCSObjectIdentifiers.des_EDE3_CBC.getId(), Integers.valueOf(192));
+
+        keySizes.put(NISTObjectIdentifiers.id_aes128_CBC, Integers.valueOf(128));
+        keySizes.put(NISTObjectIdentifiers.id_aes192_CBC, Integers.valueOf(192));
+        keySizes.put(NISTObjectIdentifiers.id_aes256_CBC, Integers.valueOf(256));
+
+        keySizes.put(NTTObjectIdentifiers.id_camellia128_cbc, Integers.valueOf(128));
+        keySizes.put(NTTObjectIdentifiers.id_camellia192_cbc, Integers.valueOf(192));
+        keySizes.put(NTTObjectIdentifiers.id_camellia256_cbc, Integers.valueOf(256));
+    }
+
+    public static int getKeySize(ASN1ObjectIdentifier oid)
+    {
+        Integer size = (Integer)keySizes.get(oid);
+
+        if (size != null)
+        {
+            return size.intValue();
+        }
+
+        return -1;
+    }
+}