From 3101955ac0f7f3818dca53d285f5ccd60ccdddea Mon Sep 17 00:00:00 2001
From: Jay Berkenbilt <ejb@ql.org>
Date: Wed, 26 Dec 2012 17:10:25 -0500
Subject: Add V5 parameters to EncryptionData

---
 libqpdf/QPDFWriter.cc      | 10 ++++++++--
 libqpdf/QPDF_encryption.cc | 39 +++++++++++++++++++++++++++++++++++++--
 2 files changed, 45 insertions(+), 4 deletions(-)

(limited to 'libqpdf')

diff --git a/libqpdf/QPDFWriter.cc b/libqpdf/QPDFWriter.cc
index 05b5a9a9..f893053b 100644
--- a/libqpdf/QPDFWriter.cc
+++ b/libqpdf/QPDFWriter.cc
@@ -406,7 +406,7 @@ QPDFWriter::setEncryptionParameters(
 	user_password, owner_password, V, R, key_len, P,
 	this->encrypt_metadata, this->id1, O, U);
     setEncryptionParametersInternal(
-	V, R, key_len, P, O, U, this->id1, user_password);
+	V, R, key_len, P, O, U, "", "", "", this->id1, user_password);
 }
 
 void
@@ -467,6 +467,9 @@ QPDFWriter::copyEncryptionParameters(QPDF& qpdf)
 	    encrypt.getKey("/P").getIntValue(),
 	    encrypt.getKey("/O").getStringValue(),
 	    encrypt.getKey("/U").getStringValue(),
+            "",                 // XXXX OE
+            "",                 // XXXX UE
+            "",                 // XXXX Perms
 	    this->id1,		// this->id1 == the other file's id1
 	    qpdf.getPaddedUserPassword());
     }
@@ -569,8 +572,11 @@ void
 QPDFWriter::setEncryptionParametersInternal(
     int V, int R, int key_len, long P,
     std::string const& O, std::string const& U,
+    std::string const& OE, std::string const& UE, std::string const& Perms,
     std::string const& id1, std::string const& user_password)
 {
+    // XXXX OE, UE, Perms, V=5
+
     encryption_dictionary["/Filter"] = "/Standard";
     encryption_dictionary["/V"] = QUtil::int_to_string(V);
     encryption_dictionary["/Length"] = QUtil::int_to_string(key_len * 8);
@@ -606,7 +612,7 @@ QPDFWriter::setEncryptionParametersInternal(
 
     this->encrypted = true;
     QPDF::EncryptionData encryption_data(
-	V, R, key_len, P, O, U, id1, this->encrypt_metadata);
+	V, R, key_len, P, O, U, OE, UE, Perms, id1, this->encrypt_metadata);
     this->encryption_key = QPDF::compute_encryption_key(
 	user_password, encryption_data);
 }
diff --git a/libqpdf/QPDF_encryption.cc b/libqpdf/QPDF_encryption.cc
index 4cfc3b33..893f93f5 100644
--- a/libqpdf/QPDF_encryption.cc
+++ b/libqpdf/QPDF_encryption.cc
@@ -62,6 +62,24 @@ QPDF::EncryptionData::getU() const
     return this->U;
 }
 
+std::string const&
+QPDF::EncryptionData::getOE() const
+{
+    return this->OE;
+}
+
+std::string const&
+QPDF::EncryptionData::getUE() const
+{
+    return this->UE;
+}
+
+std::string const&
+QPDF::EncryptionData::getPerms() const
+{
+    return this->Perms;
+}
+
 std::string const&
 QPDF::EncryptionData::getId1() const
 {
@@ -86,6 +104,21 @@ QPDF::EncryptionData::setU(std::string const& U)
     this->U = U;
 }
 
+void
+QPDF::EncryptionData::setV5EncryptionParameters(
+    std::string const& O,
+    std::string const& OE,
+    std::string const& U,
+    std::string const& UE,
+    std::string const& Perms)
+{
+    this->O = O;
+    this->OE = OE;
+    this->U = U;
+    this->UE = UE;
+    this->Perms = Perms;
+}
+
 static void
 pad_or_truncate_password(std::string const& password, char k1[key_bytes])
 {
@@ -557,7 +590,8 @@ QPDF::initializeEncryption()
 			  " a bug report that includes this file.");
 	}
     }
-    EncryptionData data(V, R, Length / 8, P, O, U, id1, this->encrypt_metadata);
+    EncryptionData data(V, R, Length / 8, P, O, U, "", "", "",
+                        id1, this->encrypt_metadata);
     if (check_owner_password(
 	    this->user_password, this->provided_password, data))
     {
@@ -779,7 +813,8 @@ QPDF::compute_encryption_O_U(
     int V, int R, int key_len, int P, bool encrypt_metadata,
     std::string const& id1, std::string& O, std::string& U)
 {
-    EncryptionData data(V, R, key_len, P, "", "", id1, encrypt_metadata);
+    EncryptionData data(V, R, key_len, P, "", "", "", "", "",
+                        id1, encrypt_metadata);
     data.setO(compute_O_value(user_password, owner_password, data));
     O = data.getO();
     data.setU(compute_U_value(user_password, data));
-- 
cgit v1.2.3-54-g00ecf