diff --git a/sdk/sign_tool/SignTool/manage_metadata.cpp b/sdk/sign_tool/SignTool/manage_metadata.cpp
index e71e8ed22f..6f86fa425a 100644
--- a/sdk/sign_tool/SignTool/manage_metadata.cpp
+++ b/sdk/sign_tool/SignTool/manage_metadata.cpp
@@ -58,7 +58,7 @@
 static bool traverser_parameter(const char *temp_name, const char *temp_text, xml_parameter_t *parameter, int parameter_count)
 {
     assert(temp_name != NULL && parameter != NULL);
-    uint32_t temp_value=0;
+    uint64_t temp_value=0;
     if(temp_text == NULL)
     {
         se_trace(SE_TRACE_ERROR, LACK_VALUE_FOR_ELEMENT_ERROR, temp_name);
@@ -74,7 +74,7 @@ static bool traverser_parameter(const char *temp_name, const char *temp_text, xm
 
         errno = 0;
         char* endptr = NULL;
-        temp_value = (uint32_t)strtoul(temp_text, &endptr, 0);
+        temp_value = (uint64_t)strtoull(temp_text, &endptr, 0);
         if(*endptr!='\0'||errno!=0)   //Invalid value or valid value but out of the representable range
         {
             se_trace(SE_TRACE_ERROR, INVALID_VALUE_FOR_ELEMENT_ERROR, temp_name);
@@ -212,7 +212,7 @@ bool CMetadata::modify_metadata(const xml_parameter_t *parameter)
     assert(parameter != NULL);
     m_metadata->version = META_DATA_MAKE_VERSION(MAJOR_VERSION,MINOR_VERSION );
     m_metadata->size = offsetof(metadata_t, data);
-    m_metadata->tcs_policy = parameter[TCSPOLICY].value;
+    m_metadata->tcs_policy = (uint32_t)parameter[TCSPOLICY].value;
     m_metadata->ssa_frame_size = SSA_FRAME_SIZE;
     //stack/heap must be page-align
     if(parameter[STACKMAXSIZE].value % ALIGN_SIZE)
@@ -237,13 +237,13 @@ bool CMetadata::modify_metadata(const xml_parameter_t *parameter)
     m_metadata->max_save_buffer_size = MAX_SAVE_BUF_SIZE;
     m_metadata->magic_num = METADATA_MAGIC;
     m_metadata->desired_misc_select = 0;
-    m_metadata->enclave_css.body.misc_select = parameter[MISCSELECT].value;
-    m_metadata->enclave_css.body.misc_mask =  parameter[MISCMASK].value;
+    m_metadata->enclave_css.body.misc_select = (uint32_t)parameter[MISCSELECT].value;
+    m_metadata->enclave_css.body.misc_mask =  (uint32_t)parameter[MISCMASK].value;
 
     m_create_param.heap_max_size = parameter[HEAPMAXSIZE].value;
     m_create_param.ssa_frame_size = SSA_FRAME_SIZE;
     m_create_param.stack_max_size = parameter[STACKMAXSIZE].value;
-    m_create_param.tcs_max_num = parameter[TCSNUM].value;
+    m_create_param.tcs_max_num = (uint32_t)parameter[TCSNUM].value;
     m_create_param.tcs_policy = m_metadata->tcs_policy;
     return true;
 }
diff --git a/sdk/sign_tool/SignTool/manage_metadata.h b/sdk/sign_tool/SignTool/manage_metadata.h
index b6033fd0a7..e45a628613 100644
--- a/sdk/sign_tool/SignTool/manage_metadata.h
+++ b/sdk/sign_tool/SignTool/manage_metadata.h
@@ -68,9 +68,9 @@ typedef enum _para_type_t
 typedef struct _xml_parameter_t
 {
     const char* name;       //the element name
-    uint32_t max_value;  
-    uint32_t min_value;
-    uint32_t value;         //parameter value. Initialized with the default value.
+    uint64_t max_value;
+    uint64_t min_value;
+    uint64_t value;         //parameter value. Initialized with the default value.
     uint32_t flag;          //Show whether it has been matched
 } xml_parameter_t;
 
diff --git a/sdk/sign_tool/SignTool/sign_tool.cpp b/sdk/sign_tool/SignTool/sign_tool.cpp
index 5f6d66e93b..ba09e38d39 100644
--- a/sdk/sign_tool/SignTool/sign_tool.cpp
+++ b/sdk/sign_tool/SignTool/sign_tool.cpp
@@ -309,12 +309,12 @@ static bool fill_enclave_css(const IppsRSAPublicKeyState *pub_key, const xml_par
     }
 
     //hardware version
-    enclave_css.header.hw_version = para[HW].value;
+    enclave_css.header.hw_version = (uint32_t)para[HW].value;
 
     //****************************fill the body***********************
     // Misc_select/Misc_mask
-    enclave_css.body.misc_select = para[MISCSELECT].value;
-    enclave_css.body.misc_mask = para[MISCMASK].value;
+    enclave_css.body.misc_select = (uint32_t)para[MISCSELECT].value;
+    enclave_css.body.misc_mask = (uint32_t)para[MISCMASK].value;
     //low 64 bit
     enclave_css.body.attributes.flags = 0;
     enclave_css.body.attribute_mask.flags = ~SGX_FLAGS_DEBUG;
@@ -1088,8 +1088,8 @@ int main(int argc, char* argv[])
                                    {"HW", 0x10,0,0,0},
                                    {"TCSNum",0xFFFFFFFF,TCS_NUM_MIN,1,0},
                                    {"TCSPolicy",TCS_POLICY_UNBIND,TCS_POLICY_BIND,TCS_POLICY_UNBIND,0},
-                                   {"StackMaxSize",0xFFFFFFFF,STACK_SIZE_MIN,0x40000,0},
-                                   {"HeapMaxSize",0xFFFFFFFF,HEAP_SIZE_MIN,0x100000,0},
+                                   {"StackMaxSize",0x1FFFFFFFFF,STACK_SIZE_MIN,0x40000,0},
+                                   {"HeapMaxSize",0x1FFFFFFFFF,HEAP_SIZE_MIN,0x100000,0},
                                    {"MiscSelect", 0xFFFFFFFF, 0, DEFAULT_MISC_SELECT, 0},
                                    {"MiscMask", 0xFFFFFFFF, 0, DEFAULT_MISC_MASK, 0}};