diff options
| -rw-r--r-- | trusty/keymaster/trusty_keymaster_device.cpp | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/trusty/keymaster/trusty_keymaster_device.cpp b/trusty/keymaster/trusty_keymaster_device.cpp index 04826dffc..361045624 100644 --- a/trusty/keymaster/trusty_keymaster_device.cpp +++ b/trusty/keymaster/trusty_keymaster_device.cpp @@ -323,6 +323,37 @@ keymaster_error_t TrustyKeymasterDevice::export_key(keymaster_key_format_t expor const keymaster_blob_t* app_data, keymaster_blob_t* export_data) { ALOGD("Device received export_key"); + + if (error_ != KM_ERROR_OK) { + return error_; + } + if (!key_to_export || !key_to_export->key_material) { + return KM_ERROR_UNEXPECTED_NULL_POINTER; + } + if (!export_data) { + return KM_ERROR_OUTPUT_PARAMETER_NULL; + } + + export_data->data = nullptr; + export_data->data_length = 0; + + ExportKeyRequest request(message_version_); + request.key_format = export_format; + request.SetKeyMaterial(*key_to_export); + AddClientAndAppData(client_id, app_data, &request); + + ExportKeyResponse response(message_version_); + keymaster_error_t err = Send(KM_EXPORT_KEY, request, &response); + if (err != KM_ERROR_OK) { + return err; + } + + export_data->data_length = response.key_data_length; + export_data->data = DuplicateBuffer(response.key_data, response.key_data_length); + if (!export_data->data) { + return KM_ERROR_MEMORY_ALLOCATION_FAILED; + } + return KM_ERROR_OK; } |