ck="sign">
                            签名
                        </button>
                    </div>
                    <div class="col-6">
                        <button class="btn btn-dim btn-outline-secondary btn-block card-link" @click="verify">
                            验签
                        </button>
                    </div>
                </div>
                <div class="form-group">
                    <label class="form-label">待签名，验签原始内容</label