add nativeapis

Signed-off-by: Nzengyawen <zengyawen1@huawei.com>

en/application-dev/reference/native-apis/_o_h___huks___key_material_ecc.md

+# OH_Huks_KeyMaterialEcc
+
+
+## Overview
+
+Defines the structure of an ECC key.
+
+**Since:**
+9
+
+**Related Modules:**
+
+[HuksTypeApi](_huks_type_api.md)
+
+
+## Summary
+
+
+### Member Variables
+
+| Name | Description | 
+| -------- | -------- |
+| [keyAlg](#keyalg) |Algorithm of the key.  | 
+| [keySize](#keysize) | Length of the key.  | 
+| [xSize](#xsize) | Length of the x value.  | 
+| [ySize](#ysize) | Length of the y value.  | 
+| [zSize](#zsize) | Length of the z value.  | 
+
+
+## Member Variable Description 
+
+
+### keyAlg
+
+  
+```
+enum OH_Huks_KeyAlg OH_Huks_KeyMaterialEcc::keyAlg
+```
+**Description**<br>
+Algorithm of the key.
+
+
+### keySize
+
+  
+```
+uint32_t OH_Huks_KeyMaterialEcc::keySize
+```
+**Description**<br>
+Length of the key.
+
+
+### xSize
+
+  
+```
+uint32_t OH_Huks_KeyMaterialEcc::xSize
+```
+**Description**<br>
+Length of the x value.
+
+
+### ySize
+
+  
+```
+uint32_t OH_Huks_KeyMaterialEcc::ySize
+```
+**Description**<br>
+Length of the y value.
+
+
+### zSize
+
+  
+```
+uint32_t OH_Huks_KeyMaterialEcc::zSize
+```
+**Description**<br>
+Length of the z value.