"col-3">
                    <button class="btn btn-dim btn-outline-secondary btn-block card-link" @click="encrypt">
                        <em class="icon ni ni-lock"></em>加密
                    </button>
                </div>
                <div class="col-3">
                    <button class="btn btn-dim btn-outline-secondary btn-block card-link" @click="decrypt">
                        <em class="icon ni ni-unlock"></em>解密
                    </button>
                </div>
     