diff --git a/reactos/lib/advapi32/advapi32.def b/reactos/lib/advapi32/advapi32.def
index ea60f206513..012977faf0e 100644
--- a/reactos/lib/advapi32/advapi32.def
+++ b/reactos/lib/advapi32/advapi32.def
@@ -51,10 +51,10 @@ BuildImpersonateTrusteeW@8
 ;BuildSecurityDescriptorW@36
 BuildTrusteeWithNameA@8
 BuildTrusteeWithNameW@8
-;BuildTrusteeWithObjectsAndNameA@24
-;BuildTrusteeWithObjectsAndNameW@24
-;BuildTrusteeWithObjectsAndSidA@20
-;BuildTrusteeWithObjectsAndSidW@20
+BuildTrusteeWithObjectsAndNameA@24
+BuildTrusteeWithObjectsAndNameW@24
+BuildTrusteeWithObjectsAndSidA@20
+BuildTrusteeWithObjectsAndSidW@20
 BuildTrusteeWithSidA@8
 BuildTrusteeWithSidW@8
 ;CancelOverlappedAccess@4
@@ -271,7 +271,7 @@ GetOldestEventLogRecord@8
 GetSecurityDescriptorControl@12
 GetSecurityDescriptorDacl@16
 GetSecurityDescriptorGroup@12
-GetSecurityDescriptorLength@4
+GetSecurityDescriptorLength@4=NTDLL.RtlLengthSecurityDescriptor
 GetSecurityDescriptorOwner@12
 GetSecurityDescriptorRMControl@8
 GetSecurityDescriptorSacl@16
@@ -487,7 +487,7 @@ RegGetKeySecurity@16
 RegLoadKeyA@12
 RegLoadKeyW@12
 RegNotifyChangeKeyValue@20
-;RegOpenCurrentUser
+RegOpenCurrentUser@8
 RegOpenKeyA@12
 RegOpenKeyExA@20
 RegOpenKeyExW@20
diff --git a/reactos/lib/advapi32/reg/reg.c b/reactos/lib/advapi32/reg/reg.c
index c7389356c6f..7391a22b3b2 100644
--- a/reactos/lib/advapi32/reg/reg.c
+++ b/reactos/lib/advapi32/reg/reg.c
@@ -1633,6 +1633,29 @@ RegNotifyChangeKeyValue (HKEY hKey,
 }
 
 
+/************************************************************************
+ *  RegOpenCurrentUser
+ *
+ * @implemented
+ */
+LONG STDCALL
+RegOpenCurrentUser (IN REGSAM samDesired,
+                    OUT PHKEY phkResult)
+{
+  NTSTATUS Status;
+
+  Status = RtlOpenCurrentUser((ACCESS_MASK)samDesired,
+                              (PHANDLE)phkResult);
+  if (!NT_SUCCESS(Status))
+  {
+    /* NOTE - don't set the last error code! just return the error! */
+    return RtlNtStatusToDosError(Status);
+  }
+
+  return ERROR_SUCCESS;
+}
+
+
 /************************************************************************
  *  RegOpenKeyA
  *
diff --git a/reactos/lib/advapi32/sec/sec.c b/reactos/lib/advapi32/sec/sec.c
index 790a33dc6e3..c672d9a7145 100644
--- a/reactos/lib/advapi32/sec/sec.c
+++ b/reactos/lib/advapi32/sec/sec.c
@@ -102,19 +102,6 @@ GetSecurityDescriptorGroup (
 }
 
 
-/*
- * @implemented
- */
-DWORD
-STDCALL
-GetSecurityDescriptorLength (
-	PSECURITY_DESCRIPTOR	pSecurityDescriptor
-	)
-{
-	return RtlLengthSecurityDescriptor(pSecurityDescriptor);
-}
-
-
 /*
  * @implemented
  */
diff --git a/reactos/lib/advapi32/sec/trustee.c b/reactos/lib/advapi32/sec/trustee.c
index a408d7d71b2..d324a439be8 100644
--- a/reactos/lib/advapi32/sec/trustee.c
+++ b/reactos/lib/advapi32/sec/trustee.c
@@ -190,6 +190,78 @@ BuildTrusteeWithNameW(PTRUSTEE_W pTrustee, LPWSTR name)
 }
 
 
+/******************************************************************************
+ * BuildTrusteeWithObjectsAndNameA [ADVAPI32.@]
+ */
+VOID WINAPI
+BuildTrusteeWithObjectsAndNameA(PTRUSTEEA pTrustee, POBJECTS_AND_NAME_A pObjName,
+                                SE_OBJECT_TYPE ObjectType, LPSTR ObjectTypeName,
+                                LPSTR InheritedObjectTypeName, LPSTR Name)
+{
+    DPRINT("%p %p 0x%08x %p %p %s\n", pTrustee, pObjName,
+           ObjectType, ObjectTypeName, InheritedObjectTypeName, debugstr_a(Name));
+
+    pTrustee->pMultipleTrustee = NULL;
+    pTrustee->MultipleTrusteeOperation = NO_MULTIPLE_TRUSTEE;
+    pTrustee->TrusteeForm = TRUSTEE_IS_OBJECTS_AND_NAME;
+    pTrustee->TrusteeType = TRUSTEE_IS_UNKNOWN;
+    pTrustee->ptstrName = Name;
+}
+
+
+/******************************************************************************
+ * BuildTrusteeWithObjectsAndNameW [ADVAPI32.@]
+ */
+VOID WINAPI
+BuildTrusteeWithObjectsAndNameW(PTRUSTEEW pTrustee, POBJECTS_AND_NAME_W pObjName,
+                                SE_OBJECT_TYPE ObjectType, LPWSTR ObjectTypeName,
+                                LPWSTR InheritedObjectTypeName, LPWSTR Name)
+{
+    DPRINT("%p %p 0x%08x %p %p %s\n", pTrustee, pObjName,
+           ObjectType, ObjectTypeName, InheritedObjectTypeName, debugstr_w(Name));
+
+    pTrustee->pMultipleTrustee = NULL;
+    pTrustee->MultipleTrusteeOperation = NO_MULTIPLE_TRUSTEE;
+    pTrustee->TrusteeForm = TRUSTEE_IS_OBJECTS_AND_NAME;
+    pTrustee->TrusteeType = TRUSTEE_IS_UNKNOWN;
+    pTrustee->ptstrName = Name;
+}
+
+
+/******************************************************************************
+ * BuildTrusteeWithObjectsAndSidA [ADVAPI32.@]
+ */
+VOID WINAPI
+BuildTrusteeWithObjectsAndSidA(PTRUSTEEA pTrustee, POBJECTS_AND_SID pObjSid,
+                               GUID* pObjectGuid, GUID* pInheritedObjectGuid, PSID pSid)
+{
+    DPRINT("%p %p %p %p %p\n", pTrustee, pObjSid, pObjectGuid, pInheritedObjectGuid, pSid);
+
+    pTrustee->pMultipleTrustee = NULL;
+    pTrustee->MultipleTrusteeOperation = NO_MULTIPLE_TRUSTEE;
+    pTrustee->TrusteeForm = TRUSTEE_IS_OBJECTS_AND_SID;
+    pTrustee->TrusteeType = TRUSTEE_IS_UNKNOWN;
+    pTrustee->ptstrName = (LPSTR) pSid;
+}
+
+
+/******************************************************************************
+ * BuildTrusteeWithObjectsAndSidW [ADVAPI32.@]
+ */
+VOID WINAPI
+BuildTrusteeWithObjectsAndSidW(PTRUSTEEW pTrustee, POBJECTS_AND_SID pObjSid,
+                               GUID* pObjectGuid, GUID* pInheritedObjectGuid, PSID pSid)
+{
+    DPRINT("%p %p %p %p %p\n", pTrustee, pObjSid, pObjectGuid, pInheritedObjectGuid, pSid);
+
+    pTrustee->pMultipleTrustee = NULL;
+    pTrustee->MultipleTrusteeOperation = NO_MULTIPLE_TRUSTEE;
+    pTrustee->TrusteeForm = TRUSTEE_IS_OBJECTS_AND_SID;
+    pTrustee->TrusteeType = TRUSTEE_IS_UNKNOWN;
+    pTrustee->ptstrName = (LPWSTR) pSid;
+}
+
+
 /******************************************************************************
  * GetMultipleTrusteeA [ADVAPI32.@]
  */