From d841f348b94f30cb8e94a0d34e9b20aa34d33aca Mon Sep 17 00:00:00 2001
From: Eike Rathke <erack@redhat.com>
Date: Sat, 24 Feb 2018 14:18:04 +0100
Subject: Add ScOoxPasswordHash::verifyPassword(), tdf#104250 prep

Change-Id: Ife588fa0626b01336813e956a25e51541d1096e6
---
 sc/inc/tabprotection.hxx              |  1 +
 sc/source/core/data/tabprotection.cxx | 14 ++++++++++++++
 2 files changed, 15 insertions(+)

diff --git a/sc/inc/tabprotection.hxx b/sc/inc/tabprotection.hxx
index 6a776807a191..f33981699b9b 100644
--- a/sc/inc/tabprotection.hxx
+++ b/sc/inc/tabprotection.hxx
@@ -55,6 +55,7 @@ struct ScOoxPasswordHash
         maHashValue.clear();
         maSaltValue.clear();
     }
+    bool verifyPassword( const OUString& aPassText ) const;
 };
 
 namespace ScPassHashHelper
diff --git a/sc/source/core/data/tabprotection.cxx b/sc/source/core/data/tabprotection.cxx
index 6aecc83a3c11..2dec79100484 100644
--- a/sc/source/core/data/tabprotection.cxx
+++ b/sc/source/core/data/tabprotection.cxx
@@ -20,6 +20,7 @@
 #include <tabprotection.hxx>
 #include <svl/PasswordHelper.hxx>
 #include <comphelper/docpasswordhelper.hxx>
+#include <comphelper/hash.hxx>
 #include <osl/diagnose.h>
 #include <document.hxx>
 
@@ -88,6 +89,19 @@ ScPasswordHash ScPassHashHelper::getHashTypeFromURI(const OUString& rURI)
     return PASSHASH_UNSPECIFIED;
 }
 
+bool ScOoxPasswordHash::verifyPassword( const OUString& aPassText ) const
+{
+    if (!hasPassword())
+        return false;
+
+    const OUString aHash( comphelper::Hash::calculateHashBase64( aPassText, maSaltValue, mnSpinCount, maAlgorithmName));
+    if (aHash.isEmpty())
+        // unsupported algorithm
+        return false;
+
+    return aHash == maHashValue;
+}
+
 ScPassHashProtectable::~ScPassHashProtectable()
 {
 }
-- 
cgit