Querying Key Aliases (C/C++)

This topic walks you through on how to query key aliases.

NOTE
The mini-system devices do not support query of key aliases.

Add the dynamic library in the CMake script.

   target_link_libraries(entry PUBLIC libhuks_ndk.z.so)

How to Develop

Initialize the key property set. The tag used for querying key aliases must be OH_HUKS_TAG_AUTH_STORAGE_LEVEL.
Use OH_Huks_ListAliases to query key aliases.

/* Query key aliases. */
#include "huks/native_huks_api.h"
#include "huks/native_huks_param.h"
#include <string.h>
OH_Huks_Result InitParamSet(
   struct OH_Huks_ParamSet **paramSet,
   const struct OH_Huks_Param *params,
   uint32_t paramCount)
{
   OH_Huks_Result ret = OH_Huks_InitParamSet(paramSet);
   if (ret.errorCode != OH_HUKS_SUCCESS) {
       return ret;
   }
   ret = OH_Huks_AddParams(*paramSet, params, paramCount);
   if (ret.errorCode != OH_HUKS_SUCCESS) {
       OH_Huks_FreeParamSet(paramSet);
       return ret;
   }
   ret = OH_Huks_BuildParamSet(paramSet);
   if (ret.errorCode != OH_HUKS_SUCCESS) {
       OH_Huks_FreeParamSet(paramSet);
       return ret;
   }
   return ret;
}
struct OH_Huks_Param g_testQueryParam[] = {
   {
       .tag = OH_HUKS_TAG_AUTH_STORAGE_LEVEL,
       .uint32Param = OH_HUKS_AUTH_STORAGE_LEVEL_DE
   }, 
};
static napi_value ListAliases(napi_env env, napi_callback_info info)
{
   struct OH_Huks_ParamSet *testQueryParamSet = nullptr;
   struct OH_Huks_KeyAliasSet *outData = nullptr;
   struct OH_Huks_Result ohResult;
   do {
       /* 1. Initialize the key property set. */
       ohResult = InitParamSet(&testQueryParamSet, g_testQueryParam,
           sizeof(g_testQueryParam) / sizeof(OH_Huks_Param));
       if (ohResult.errorCode != OH_HUKS_SUCCESS) {
           break;
       }
       /* 2. Query key aliases. */
       ohResult = OH_Huks_ListAliases(testQueryParamSet, &outData);
   } while (0);

   OH_Huks_FreeParamSet(&testQueryParamSet);
   OH_Huks_FreeKeyAliasSet(outData);
   napi_value ret;
   napi_create_int32(env, ohResult.errorCode, &ret);
   return ret;
}