From f44becfdb8bc0dad2d3ec7abd3aaa889d9e0bfea Mon Sep 17 00:00:00 2001
From: Tomaž Vajngerl <tomaz.vajngerl@collabora.co.uk>
Date: Wed, 20 Nov 2024 18:41:35 +0900
Subject: pdf: add function to pad the vector as required by PDF specs
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Change-Id: I7196ad523b3084124a3b03fb2e4998d42fd91779
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/176883
Reviewed-by: Miklos Vajna <vmiklos@collabora.com>
Tested-by: Jenkins CollaboraOffice <jenkinscollaboraoffice@gmail.com>
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/178757
Tested-by: Jenkins
Reviewed-by: Tomaž Vajngerl <quikee@gmail.com>
---
 vcl/source/pdf/PDFEncryptorR6.cxx | 11 +++++++++++
 1 file changed, 11 insertions(+)

(limited to 'vcl/source')

diff --git a/vcl/source/pdf/PDFEncryptorR6.cxx b/vcl/source/pdf/PDFEncryptorR6.cxx
index b3850a5929f8..b3e6f9e3059e 100644
--- a/vcl/source/pdf/PDFEncryptorR6.cxx
+++ b/vcl/source/pdf/PDFEncryptorR6.cxx
@@ -238,6 +238,17 @@ std::vector<sal_uInt8> computeHashR6(const sal_uInt8* pPassword, size_t nPasswor
     return std::vector<sal_uInt8>(K.begin(), K.begin() + 32);
 }
 
+size_t addPaddingToVector(std::vector<sal_uInt8>& rVector, size_t nBlockSize)
+{
+    size_t nPaddedSize = comphelper::roundUp(rVector.size(), size_t(nBlockSize));
+    if (nPaddedSize > rVector.size())
+    {
+        sal_uInt8 nPaddedValue = sal_uInt8(nPaddedSize - rVector.size());
+        rVector.resize(nPaddedSize, nPaddedValue);
+    }
+    return nPaddedSize;
+}
+
 } // end vcl::pdf
 
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