ncrypt: Check null handle when setting or getting properties.

dlls/ncrypt/main.c

@@ -164,7 +164,9 @@ SECURITY_STATUS WINAPI NCryptGetProperty(NCRYPT_HANDLE handle, const WCHAR *name
     TRACE("(%#Ix, %s, %p, %lu, %p, %#lx)\n", handle, wine_dbgstr_w(name), output, outsize, result, flags);
     if (flags) FIXME("flags %#lx not supported\n", flags);
 
+    if (!object) return NTE_INVALID_HANDLE;
     if (!(property = get_object_property(object, name))) return NTE_INVALID_PARAMETER;
+
     *result = property->value_size;
     if (!output) return ERROR_SUCCESS;
     if (outsize < property->value_size) return NTE_BUFFER_TOO_SMALL;
@@ -376,6 +378,7 @@ SECURITY_STATUS WINAPI NCryptSetProperty(NCRYPT_HANDLE handle, const WCHAR *name
     TRACE("(%#Ix, %s, %p, %lu, %#lx)\n", handle, wine_dbgstr_w(name), input, insize, flags);
     if (flags) FIXME("flags %#lx not supported\n", flags);
 
+    if (!object) return NTE_INVALID_HANDLE;
     return set_object_property(object, name, input, insize);
 }
 

dlls/ncrypt/tests/ncrypt.c

@@ -199,6 +199,9 @@ static void test_get_property(void)
     ok(ret == ERROR_SUCCESS, "got %#lx\n", ret);
     ok(keylength == 1024, "got %lu\n", keylength);
 
+    ret = NCryptGetProperty(0, NCRYPT_LENGTH_PROPERTY, (BYTE *)&keylength, size, &size, 0);
+    ok(ret == NTE_INVALID_HANDLE, "got %#lx\n", ret);
+
     NCryptFreeObject(prov);
 }