diff --git a/examples/seal_data/enclave/seal_data.c b/examples/seal_data/enclave/seal_data.c
index 5697981f3933a2eba9c9074d51197eefb311d269..d35b660d7c2164a84ae2e07402c93b6788eaa501 100644
--- a/examples/seal_data/enclave/seal_data.c
+++ b/examples/seal_data/enclave/seal_data.c
@@ -38,7 +38,7 @@ int seal_data_test_func(char *buf, uint32_t buf_len)
     uint32_t data_len = strlen((const char *)seal_data);
     uint32_t add_len = strlen((const char *)additional_text);
     /******** prepare to seal data *********/
-    uint32_t sealed_data_len = cc_enclave_get_sealed_data_size(data_len, add_len);
+    uint32_t sealed_data_len = cc_enclave_get_sealed_data_size(add_len, data_len);
     if (sealed_data_len == UINT32_MAX)
         return CC_ERROR_OUT_OF_MEMORY;
     
diff --git a/sdk/inc/enclave_inc/gp/itrustee/dataseal_internal.h b/sdk/inc/enclave_inc/gp/itrustee/dataseal_internal.h
index c05aacb27a48db525167a9a9564a0b2d371ba427..0ed2f5ba787d2dc24e3e7ca062390d95e4e25e13 100644
--- a/sdk/inc/enclave_inc/gp/itrustee/dataseal_internal.h
+++ b/sdk/inc/enclave_inc/gp/itrustee/dataseal_internal.h
@@ -42,7 +42,7 @@ typedef struct _itrustee_seal_data {
     uint8_t payload_data[];
 } itrustee_seal_data_t;
 
-uint32_t get_sealed_data_size_ex(const uint32_t seal_data_len, const uint32_t aad_len);
+uint32_t get_sealed_data_size_ex(const uint32_t aad_len, const uint32_t seal_data_len);
 uint32_t get_encrypted_text_size_ex(const void *sealed_data);
 uint32_t get_add_text_size_ex(const void *sealed_data);
 
diff --git a/sdk/inc/enclave_inc/penglai/dataseal_internal.h b/sdk/inc/enclave_inc/penglai/dataseal_internal.h
index c9688671d05d842764fbd76c21ede597bf2c4d03..ae9ac9c5de1f696f47fb8558ff08162e3a7863b6 100644
--- a/sdk/inc/enclave_inc/penglai/dataseal_internal.h
+++ b/sdk/inc/enclave_inc/penglai/dataseal_internal.h
@@ -19,7 +19,7 @@
 #define SEAL_DATA_FN(in, inl, out, outl, aad, aadl) penglai_seal_data(in, inl, out, outl, aad, aadl)
 #define UNSEAL_DATA_FN(in, out, outl, aad, aadl) penglai_unseal_data(in, out, outl, aad, aadl)
 
-uint32_t get_sealed_data_size_ex(uint32_t seal_data_len, uint32_t aad_len);
+uint32_t get_sealed_data_size_ex(const uint32_t aad_len, const uint32_t seal_data_len);
 uint32_t get_encrypted_text_size_ex(const void *sealed_data);
 uint32_t get_add_text_size_ex(const void *sealed_data);
 
diff --git a/sdk/inc/enclave_inc/sgx/dataseal_internal.h b/sdk/inc/enclave_inc/sgx/dataseal_internal.h
index 9a1dad1415fb3e7ce5a689854b9ac2afc379b520..eb049c77a8e3a4e2e6552e11d4eb9f205689a622 100644
--- a/sdk/inc/enclave_inc/sgx/dataseal_internal.h
+++ b/sdk/inc/enclave_inc/sgx/dataseal_internal.h
@@ -21,7 +21,7 @@
 #define UNSEAL_DATA_FN(in, out, outl, aad, aadl) \
         internel_sgx_unseal_data(in, out, outl, aad, aadl)
 
-uint32_t get_sealed_data_size_ex(uint32_t seal_data_len, uint32_t aad_len);
+uint32_t get_sealed_data_size_ex(const uint32_t aad_len, const uint32_t seal_data_len);
 uint32_t get_encrypted_text_size_ex(const void *sealed_data);
 uint32_t get_add_text_size_ex(const void *sealed_data);       
 
diff --git a/sdk/src/enclave_src/gp/itrustee/itrustee_seal_data.c b/sdk/src/enclave_src/gp/itrustee/itrustee_seal_data.c
index e23cb1e87a05c1fae918238b6f120913d808d5af..39fe1731f8bccc0709538c17af1e07ab795c12d7 100644
--- a/sdk/src/enclave_src/gp/itrustee/itrustee_seal_data.c
+++ b/sdk/src/enclave_src/gp/itrustee/itrustee_seal_data.c
@@ -22,7 +22,7 @@ CC_OPTIMIZE_OFF static void *memset_no_optimize(void *ptr, int value, size_t num
     memset(ptr, 0, num);
 }
 
-uint32_t get_sealed_data_size_ex(uint32_t seal_data_len, uint32_t aad_len)
+uint32_t get_sealed_data_size_ex(const uint32_t aad_len, const uint32_t seal_data_len)
 {
     if (UINT32_MAX - aad_len <= seal_data_len) {
         return UINT32_MAX;
diff --git a/sdk/src/enclave_src/penglai/penglai_seal_data.c b/sdk/src/enclave_src/penglai/penglai_seal_data.c
index 8ee8b1ff0549992c2ce7bba53395003d7a0131bf..c58f0d60b78105f742bf3fccb955c72548dc900f 100644
--- a/sdk/src/enclave_src/penglai/penglai_seal_data.c
+++ b/sdk/src/enclave_src/penglai/penglai_seal_data.c
@@ -15,7 +15,7 @@
 #include "dataseal_internal.h"
 
 
-uint32_t get_sealed_data_size_ex(uint32_t aad_len, uint32_t seal_data_len)
+uint32_t get_sealed_data_size_ex(const uint32_t aad_len, const uint32_t seal_data_len)
 {
     /* Penglai does not support this API now */
     return CC_ERROR_NOT_SUPPORTED;
diff --git a/sdk/src/enclave_src/sgx/sgx_seal_data.c b/sdk/src/enclave_src/sgx/sgx_seal_data.c
index 50a495820d1507d59fb1c3d27c67d607d54d0716..9b5ca2873f063d63e4750b3e3ea59a967ff8f761 100644
--- a/sdk/src/enclave_src/sgx/sgx_seal_data.c
+++ b/sdk/src/enclave_src/sgx/sgx_seal_data.c
@@ -13,7 +13,7 @@
 #include "dataseal_internal.h"
 
 
-uint32_t get_sealed_data_size_ex(uint32_t aad_len, uint32_t seal_data_len)
+uint32_t get_sealed_data_size_ex(const uint32_t aad_len, const uint32_t seal_data_len)
 {
     return sgx_calc_sealed_data_size(aad_len, seal_data_len);
 }