1 files changed, 45 insertions, 0 deletions
diff --git a/libraries/spongycastle/pg/src/main/java/org/spongycastle/bcpg/ModDetectionCodePacket.java b/libraries/spongycastle/pg/src/main/java/org/spongycastle/bcpg/ModDetectionCodePacket.java
new file mode 100644
index 000000000..70bf4d27f
--- /dev/null
+++ b/libraries/spongycastle/pg/src/main/java/org/spongycastle/bcpg/ModDetectionCodePacket.java
@@ -0,0 +1,45 @@
+package org.spongycastle.bcpg;
+
+import java.io.*;
+
+/**
+ * basic packet for a modification detection code packet.
+ */
+public class ModDetectionCodePacket 
+    extends ContainedPacket
+{    
+    private byte[]    digest;
+    
+    ModDetectionCodePacket(
+        BCPGInputStream in)
+        throws IOException
+    {    
+        this.digest = new byte[20];
+        in.readFully(this.digest);
+    }
+    
+    public ModDetectionCodePacket(
+        byte[]    digest)
+        throws IOException
+    {    
+        this.digest = new byte[digest.length];
+        
+        System.arraycopy(digest, 0, this.digest, 0, this.digest.length);
+    }
+    
+    public byte[] getDigest()
+    {
+        byte[] tmp = new byte[digest.length];
+        
+        System.arraycopy(digest, 0, tmp, 0, tmp.length);
+        
+        return tmp;
+    }
+    
+    public void encode(
+        BCPGOutputStream    out) 
+        throws IOException
+    {
+        out.writePacket(MOD_DETECTION_CODE, digest, false);
+    }
+}