Certificate authority (CA) A certificate authority is an entity similar to a notary public. It issues digital certificates, signs certificates to verify their validity and tracks which certificates have been revoked or have expired. Top of Page Digital signature assurances The following terms and definitions show what assurances are provided by digital signatures. Authenticity The signer is ...

手写签名可让你的文档具有个人风格。 你可以扫描你的签名，将其存储为图片，然后在 Word 文档中插入签名。 扫描手写签名并插入手写签名的图片 在纸张上写下您的签名。 扫描该页面并以常见的文件格式将其保存在计算机上：.bmp、.gif、.jpg 或 .png。

How to add a signature to your Word documents. You can also use the Signature Line command in Word to insert a line to show where to sign a document.

学习在 Xbox 上在线兑换充值码后，如何安装游戏和可下载的游戏内容。

Learn what to do when you're not getting Reward Stamps while playing Solitaire.

访问 PIN 可以替代 Xbox 主机上的访客账户限制。 如果某人尝试访问评级高于该访客账户设置允许的内容，主机将提示其提供访问 PIN，以覆盖这些限制。 要了解有关创建访客帐户的详细信息，请转到： 设置和使用 Xbox 访客帐户 要限制访客可在 Xbox 主机上查看的内容和执行的操作，请访问： 管理访客 ...

查找有关在 Xbox 主机上购买和使用数字版游戏的常见问题的解答。

Want to add a padlock to your email messages? You can use encryption and digital signatures in new Outlook, classic Outlook, and Outlook on the web for work or school accounts to increase the security of messages. Encrypting an email message in Outlook means it's converted from readable plain text into scrambled cipher text. Only the recipient who has the private key that matches the public ...

无论你是 Xbox Game Pass 新用户还是对订阅有疑问，此常见问题解答都将你涵盖在内。 我们收集了玩家提出的最常见问题 - 从如何管理计费和云游戏差异，到排查问题并与家庭共享权益。 你将找到清晰的答案、有用的链接和提示，以便更快地回到游戏。

This article describes how you can digitally sign a macro project on Windows by using a certificate. If you don't already have a digital certificate, you'll need to get one.