consummate readme

Signed-off-by: Cai Xincheng <caixincheng@huawei.com>
Change-Id: I95ac004f5ef9b24672ca88a5d045e9abb2eb08a2

README.md

@@ -38,6 +38,7 @@ With the APIs provided by ASSET, you can quickly integrate system-wide encrypted
     ├── constants           # Constants of the service layer
     ├── core_service        # Core service module
     ├── crypto_manager      # Data encryption/decryption module
+    ├── db_key_operator     # Database key management module
     ├── db_operator         # Data management module
     └── os_dependency       # System capability adaptation module
 ```

README_zh.md

@@ -38,6 +38,7 @@
     ├── constants           # 服务层常量定义
     ├── core_service        # 核心处理模块
     ├── crypto_manager      # 数据加密模块
+    ├── db_key_operator     # 数据库密钥管理模块
     ├── db_operator         # 数据管理模块
     └── os_dependency       # 系统能力适配模块
 ```

interfaces/kits/c/inc/asset_type.h

@@ -208,6 +208,12 @@ typedef enum {
      * @since 12
      */
     ASSET_TAG_OPERATION_TYPE = ASSET_TYPE_NUMBER | 0x46,
+    /**
+     * A tag whose value is a bool indicating whether the attributes of an asset are required to be encrypted.
+     *
+     * @since 13
+     */
+    ASSET_TAG_REQUIRE_ATTR_ENCRYPTED = ASSET_TYPE_BOOL | 0x47,
 } Asset_Tag;
 
 /**