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platform_system_core
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trusty: keymaster: Implement get_key_characteristics 

Test: builds
Change-Id: I6e6a28d8eec5ff91a9e8c82597593857732407f3
This commit is contained in:
Jocelyn Bohr 2017-02-09 17:20:44 -08:00
parent e514dd8ad4
commit a02270fdd9
1 changed files with 36 additions and 0 deletions
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36
trusty/keymaster/trusty_keymaster_device.cpp
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@ -148,6 +148,18 @@ uint8_t* DuplicateBuffer(const uint8_t* buffer, size_t size) {
return tmp;
}
template <typename RequestType>
void AddClientAndAppData(const keymaster_blob_t* client_id, const keymaster_blob_t* app_data,
RequestType* request) {
request->additional_params.Clear();
if (client_id) {
request->additional_params.push_back(TAG_APPLICATION_ID, *client_id);
}
if (app_data) {
request->additional_params.push_back(TAG_APPLICATION_DATA, *app_data);
}
}
} // unnamed namespace
keymaster_error_t TrustyKeymasterDevice::configure(const keymaster_key_param_set_t* params) {
@ -234,6 +246,30 @@ keymaster_error_t TrustyKeymasterDevice::get_key_characteristics(
const keymaster_key_blob_t* key_blob, const keymaster_blob_t* client_id,
const keymaster_blob_t* app_data, keymaster_key_characteristics_t* characteristics) {
ALOGD("Device received get_key_characteristics");
if (error_ != KM_ERROR_OK) {
return error_;
}
if (!key_blob || !key_blob->key_material) {
return KM_ERROR_UNEXPECTED_NULL_POINTER;
}
if (!characteristics) {
return KM_ERROR_OUTPUT_PARAMETER_NULL;
}
GetKeyCharacteristicsRequest request;
request.SetKeyMaterial(*key_blob);
AddClientAndAppData(client_id, app_data, &request);
GetKeyCharacteristicsResponse response;
keymaster_error_t err = Send(KM_GET_KEY_CHARACTERISTICS, request, &response);
if (err != KM_ERROR_OK) {
return err;
}
response.enforced.CopyToParamSet(&characteristics->hw_enforced);
response.unenforced.CopyToParamSet(&characteristics->sw_enforced);
return KM_ERROR_OK;
}