---
title: "发送密码保护的文件：两种方法 | LinkPilot"
url: https://uselinkpilot.com/zh/send-password-protected-file
description: "发送密码保护的文件：把文件密码放进查看一次即销毁的一次性链接，或把文件本身作为加密的一次性链接发送。"
lang: zh-Hans
---

# 发送密码保护的文件

通过一个会销毁的链接发送文件密码，或把文件本身作为加密的一次性链接发送。

无需账号。Free 套餐永久免费。

## 工作原理

1. 01
   ### 粘贴密码、密钥或文件
   内容在发送之前先在您的浏览器中加密。所有匿名创建的机密信息都开启阅后即焚。
2. 02
   ### 发送链接
   只需一个网址。# 之后的密钥留在浏览器中，不会到达我们的服务器。
3. 03
   ### 存储的机密信息已销毁
   第一次打开就会销毁密文。之后无论谁再访问，看到的都是内容已销毁的提示。

浏览器端加密于 2026 年 9 月 29 日上线。在此之前创建的机密信息以明文形式存储，直到过期为止。文件的名称、大小和类型目前对我们仍然可见。 阅读完整的安全模型 (https://uselinkpilot.com/security-architecture).

## 方法一：用一次性链接单独发送密码

像平常一样保护文件，比如给 PDF 设密码，或打包成加密的 ZIP 或 7z 压缩包，然后通过收件人习惯的渠道发送文件。接着把密码粘贴到上方的表单中，再通过另一个渠道发送这个链接。密码在您的浏览器中加密，第一次查看就会销毁存储的副本，文件和它的密钥永远不会出现在同一条消息里。整个过程只需几秒钟，无需账号。

## 方法二：把文件本身作为加密的一次性链接发送

登录免费的 LinkPilot 账号后，把文件附加到机密信息中。文件在上传前会在您的浏览器中用 AES-GCM-256 加密，密钥留在链接中 # 之后的部分，第一次下载就会覆盖存储的密文。有效期可设为一小时、24 小时或七天，也可以在链接打开前从仪表盘中撤销。文件的名称、大小和类型对 LinkPilot 可见，内容则不可见。

Pro (https://uselinkpilot.com/pricing) 套餐增加了口令：口令会参与生成解密密钥，所以仅凭链接无法打开文件。Pro 套餐还提供自定义有效期和审计时间线。

## 分享密码保护的文件：该选哪种方法

如果收件人会保留文件，只有密码需要保护，就选方法一。如果文件本身不应在任何地方留存，比如证件扫描件、含个人信息的签字表格、含有凭据的配置文件，就选方法二。两种方法都能保证，链接一旦打开，邮箱里就不会留下任何可用的东西。

## 常见问题

### 设密码的 PDF 或 ZIP 文件本身就安全吗？

### 没有账号能发送密码保护的文件吗？

### 收件人打开加密的一次性链接需要专门的软件吗？

### 如果收件人下载后弄丢了文件怎么办？

Pro 套餐每月 $29，可为每条机密信息设置口令、自定义过期日期和时间，并提供审计时间线，记录每一次查看、销毁和撤销。 查看套餐 (https://uselinkpilot.com/pricing).

## 相关内容

- 如何通过邮件安全发送文件: https://uselinkpilot.com/zh/send-documents-securely-by-email
- Gmail 附件加密: https://uselinkpilot.com/zh/encrypt-email-attachment-gmail
- 与客户安全共享文件: https://uselinkpilot.com/zh/secure-file-sharing-with-clients
- 安全发送密码: https://uselinkpilot.com/zh/send-password-securely

全部使用场景: https://uselinkpilot.com/zh/use-cases

## Structured data

```json
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        }
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        }
      },
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        }
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]
```