PDF-AS API

git-svn-id: https://joinup.ec.europa.eu/svn/pdf-as/trunk@233 7b5415b0-85f9-ee4d-85bd-d5d0c3b42d1c

1 files changed, 8 insertions, 0 deletions

diff --git a/src/main/java/at/knowcenter/wag/egov/egiz/pdf/AbsoluteTextSignature.java b/src/main/java/at/knowcenter/wag/egov/egiz/pdf/AbsoluteTextSignature.java
index 4219475..4b9a2aa 100644
--- a/src/main/java/at/knowcenter/wag/egov/egiz/pdf/AbsoluteTextSignature.java
+++ b/src/main/java/at/knowcenter/wag/egov/egiz/pdf/AbsoluteTextSignature.java
@@ -537,6 +537,14 @@ public class AbsoluteTextSignature
   {

     int block_start_index = ((FoundKey) block.found_keys.get(0)).getStartIndex();

     int block_end_index = block.end_index;

+    

+    if (block_start_index == 0 && block_end_index == text.length())

+    {

+      // the block is the whole text - the rest text is empty.

+      // This may happen if a (no-text) empty document contains a binary signature.

+      // Then the "signed text" of the binary signature is empty.

+      return "";

+    }

 

     if (block_end_index == text.length())

     {