From 1219abaf9f0029e39f5fbdf342fd4ebf07144b5b Mon Sep 17 00:00:00 2001
From: Andreas Fitzek <andreas.fitzek@iaik.tugraz.at>
Date: Fri, 11 Jul 2014 13:38:49 +0200
Subject: added Signature Verification Level
---
.../main/java/at/gv/egiz/pdfas/lib/impl/PdfAsImpl.java | 16 +++++++++++++++-
1 file changed, 15 insertions(+), 1 deletion(-)
(limited to 'pdf-as-lib/src/main/java/at')
diff --git a/pdf-as-lib/src/main/java/at/gv/egiz/pdfas/lib/impl/PdfAsImpl.java b/pdf-as-lib/src/main/java/at/gv/egiz/pdfas/lib/impl/PdfAsImpl.java
index 40e7faf5..7815717e 100644
--- a/pdf-as-lib/src/main/java/at/gv/egiz/pdfas/lib/impl/PdfAsImpl.java
+++ b/pdf-as-lib/src/main/java/at/gv/egiz/pdfas/lib/impl/PdfAsImpl.java
@@ -232,6 +232,16 @@ public class PdfAsImpl implements PdfAs, IConfigurationConstants {
.getDictionaryObject(COSName.ACRO_FORM);
COSArray fields = (COSArray) acroForm
.getDictionaryObject(COSName.FIELDS);
+
+ int lastSig = -1;
+ for (int i = 0; i < fields.size(); i++) {
+ COSDictionary field = (COSDictionary) fields.getObject(i);
+ String type = field.getNameAsString("FT");
+ if ("Sig".equals(type)) {
+ lastSig = i;
+ }
+ }
+
for (int i = 0; i < fields.size(); i++) {
COSDictionary field = (COSDictionary) fields.getObject(i);
String type = field.getNameAsString("FT");
@@ -242,7 +252,11 @@ public class PdfAsImpl implements PdfAs, IConfigurationConstants {
// verify only specific siganture!
verifyThis = signatureToVerify == currentSignature;
}
-
+
+ if(signatureToVerify == -2) {
+ verifyThis = i == lastSig;
+ }
+
if (verifyThis) {
logger.trace("Found Signature: ");
COSBase base = field.getDictionaryObject("V");
--
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