1 files changed, 21 insertions, 1 deletions
diff --git a/pdf-over/pdf-signer-interface/src/main/java/at/asit/pdfover/pdfsigner/DocumentSource.java b/pdf-over/pdf-signer-interface/src/main/java/at/asit/pdfover/pdfsigner/DocumentSource.java
index af377c44..dafe9797 100644
--- a/pdf-over/pdf-signer-interface/src/main/java/at/asit/pdfover/pdfsigner/DocumentSource.java
+++ b/pdf-over/pdf-signer-interface/src/main/java/at/asit/pdfover/pdfsigner/DocumentSource.java
@@ -1,9 +1,29 @@
 package at.asit.pdfover.pdfsigner;
 
+import java.io.InputStream;
+
 /**
  * A Document Source
+ * 
  * @author afitzek
  */
-public class DocumentSource {
+public interface DocumentSource {
+
+	/**
+	 * Gets Document as INput Stream
+	 * @return
+	 */
+	public InputStream GetInputStream();
+
+	/**
+	 * Get Length of document
+	 * @return
+	 */
+	public int GetLength();
 
+	/**
+	 * Get byte[]
+	 * @return
+	 */
+	public byte[] GetByteArray();
 }