万维网上迫在眉睫的安全威胁数量急剧增加，需要更好的安全措施，无论是在个人层面还是在企业层面。最新的中央情报局(CIA)泄密事件表明，没有人可以安全地受到嗅探，在所有这些混乱中，加密(Encryption)成为救世主的中心舞台。为了保护您的电子邮件不被窥探，您必须对其进行加密。这篇文章讨论了电子邮件加密(email encryption)，并展示了如何在Outlook中使用其本机设置(Outlook)加密电子邮件(encrypt email messages)，以及如何使用Virtru Secure Email加密以及Mailvelope来加密电子邮件。
什么是电子邮件加密？
电子邮件(Email)加密是将电子邮件信息或数据转换为代码的过程，未经授权的人无法访问该代码。好的，让我为您简化一下，最好的类比是加密是锁和密钥机制，要打开锁，您将需要密钥，并且类似地访问加密数据流，您将需要加密密钥。消息平台已经开始使用加密，只有在我们使用电子邮件时使用它才有意义。在本部分中，我将向您解释如何向各种电子邮件客户端发送加密电子邮件。
消息平台已经开始使用加密，只有在我们使用电子邮件时使用它才有意义。在这篇文章中，我们将向您解释如何向各种电子邮件客户端发送加密电子邮件。
大多数重要文件，包括银行(Bank)对账单、合同、NDA等协议、工作机会和许多其他文件，都是少数被认为是私密的文件，在某些情况下，它们在法律上是有约束力的。为了加密您的电子邮件，您需要访问几个工具。
阅读(Read)：如何在 Microsoft Outlook 应用程序和 Outlook.com 中加密电子邮件(How to encrypt Emails in Microsoft Outlook app and Outlook.com)。
如何使用Mailvelope加密电子邮件(Mailvelope)
此特定程序适用于Windows和Mac。此外(Furthermore)，由于它是适用于Google Chrome和Mozilla的浏览器扩展程序，因此您也可以在Linux和Chromebook(Chromebooks)上使用它。我更喜欢Mailvelope，因为它可以让我加密我选择的任何电子邮件，而无需实际为每个电子邮件安装工具。
(Download)前往他们的网站下载 Mailvelope 浏览器扩展，(their website)并确保(Mailvelope)选择Chrome或Firefox。完成后，单击Mailvelope挂锁即可开始使用。
下一步包括生成两对密钥，为此单击选项。填写(Fill)您的详细信息，然后提交，完成后它将生成您的密钥。将生成的密钥放在密钥环上并使用加密 s2018 RSA及更高版本；对于更高的设置，您需要单击“高级(Advanced)”。填写您的详细信息后单击提交，此时将生成密钥。
现在您需要做的就是下载密钥并将其发送给您想要访问电子邮件的联系人，这样可以确保没有第三方干预。也就是说，我会再次提醒您注意保护密钥，否则加密将毫无用处。
撰写加密电子邮件
为了撰写电子邮件，您和您的朋友都需要交换公钥，并且都需要通过选择左侧的“导入密钥”来导入彼此的密钥。(Import Keys)再次注意不要导入相同的密钥。为了导入，您需要将联系人的公钥粘贴到文本框中，然后点击“导入”按钮。
现在像往常一样访问您的网络邮件并开始输入。开始输入后，您会在右侧看到一个类似于上面屏幕截图的小徽标。单击相同将带您进入加密的撰写窗口。这也将确保您的电子邮件完成并保存在您常用的电子邮件服务器上的草稿中。
如果您收到来自某人的加密消息，请将指针悬停在该消息上，然后会出现一个信封图标。一旦提示输入电子邮件的密码，您就可以开始了。
(Encrypt Emails)使用Virtru 安全电子邮件(Virtru Secure Email)加密技术加密电子邮件
旧的公钥加密并不适合每个人的需要。如今，大多数用户更喜欢使用像S/MIME这样的加密方法来保护您的电子邮件，但这仅在您在组织内发送电子邮件时才有效。此外，由于他们中的许多人不使用S/MIME标准，他们将无法访问加密的电子邮件。
不要担心，最好的解决办法是使用Virtru Secure Email extension for Microsoft Outlook。从其官方网站下载Virtru Secure Email插件，然后在安装完成后运行该文件。(Virtru Secure Email)
重新启动 Outlook(Restart Outlook)，您将看到Virtru 欢迎(Virtru Welcome)屏幕。单击(Click)“授权我”，然后选择您要授权的电子邮件地址。单击(Click)“激活(Activate)这些电子邮件”，您就可以开始了。
如屏幕截图所示，Virtru切换将出现在您的Outlook中。确保在发送消息时按钮处于非活动状态。与PGP(PGP)相比，整个加密过程非常轻松。
您需要做的就是确保在您发送电子邮件时打开Virtru切换开关，这就是扩展程序管理您其余的麻烦。现在在接收者的最后，如果他们有Virtru ，事情就会被排序，但如果他们没有，那么他们需要安装Virtru Secure Reader。
读者(Reader)通过登录他们的Gmail帐户或通过链接验证他们的电子邮件来验证。验证您的身份后，收件人可以直接阅读邮件。此外(Furthermore)，收件人可以使用安全阅读器进行回复，他们发送的附件也将被加密。
其他有用的功能包括设置到期日期的选项，是的，使用此扩展程序，您可以在发送之前明确指定您的消息何时到期。另一个值得一提的功能是禁用转发(Disable Forward)，不用说，这将确保收件人无法将消息转发给任何人。
Virtru是免费供个人使用的，您可以在此处(download it here)为Outlook和Firefox下载它。如果您是Chrome用户，您可以下载 Virtru Chrome 扩展程序(download the Virtru Chrome Extension)。还有其他免费的 Outlook 电子邮件加密插件(free Email Encryption Add-ins for Outlook)可供使用。
阅读(Read)：如何向 Outlook 添加数字签名。
在 Outlook 中加密电子邮件
Microsoft Outlook提供了一项安全功能。在撰写消息时，转到File > Properties。之后单击安全设置(Security Settings)，然后选择加密邮件内容和附件(Encrypt message contents and attachments)复选框。编写完消息后，只需单击发送(Send)。
如果您想加密所有传出消息，您可以通过单击文件(File)选项卡并选择选项 >Trust Center > Trust Center Settings来实现。现在您需要为每封邮件打开加密，这可以通过转到加密电子邮件下的电子邮件安全(Email Security)选项卡并选择以下选项来(Encrypt contents and attachments for outgoing messages)完成。此外，您也可以前往“设置”并选择特定证书。
如果接收者没有对应的私钥，他会看到这个消息：
This item cannot be displayed in the Reading Pane. Open the item to read its contents.
如果他尝试打开该项目，他将看到以下消息：
Sorry, we’re having trouble opening this item. This could be temporary, but if you see it again you might want to restart Outlook. Your Digital ID name cannot be found by the underlying security system.
我希望你觉得这篇文章有用。
What is Email encryption & how do you encrypt email messages
The meteoric rise in the number of security threatѕ looming on the world wide web callѕ for better security measures, be it on a personal level or as an enterpriѕe. The latеst CIA leаks have demonstrated how no one іs safe from bringing sniffed and amidst all of this mayhem, Encryption takes thе center stage as а ѕavіor. To protеct your email meѕsages from prying eyes, you will have to encrypt them. This post talks about email encryption and shows how to encrypt email messages in Outlook using its native settings, and how to use Virtru Secure Email encryption as well as Mailvelope to encrypt email messages.
What is Email encryption?
Email encryption is the process of converting email information or data into a code, one that cannot be accessed by unauthorized people. Ok let me simplify it for you, the best analogy is that Encryption is the lock and key mechanism, to open a lock you will be needing a key, and similarly to access a stream of encrypted data one will be needing the encryption key. Messaging platforms have started using Encryption and it only makes sense for us to use the same while using our emails. In this segment, I will explain to you how to send encrypted emails to various email clients.
Messaging platforms have started using Encryption and it only makes sense for us to use the same while using emails. In this post, we will explain to you how to send encrypted emails to various email clients.
Most of the important documents including Bank statements, contracts, agreements like NDA, job offers, and many others are few documents that are expected to be private, and in some cases, they are legally bound to be so. In order to encrypt your Emails, one would be needing access to a couple of tools.
Read: How to encrypt Emails in Microsoft Outlook app and Outlook.com.
How do you encrypt email messages with Mailvelope
This particular program works on both Windows and Mac. Furthermore, since it’s a browser extension that is available for Google Chrome and Mozilla you can also use it on Linux and Chromebooks. I prefer Mailvelope since it lets me encrypt any email of my choice without actually installing a tool for each one of them.
Download the Mailvelope browser extension by heading over to their website and make sure that you choose either the Chrome or Firefox. Once done click on the Mailvelope padlock to get started.
The next step includes generating two pairs of keys, for this very purpose click on the options. Fill in your details and then submit, once done it will generate your key. Put the generated key on the keyring and use encryption s2018 RSA and higher; for higher settings, you need to click on “Advanced.” After filling in your details click submit and at this juncture, the keys will be generated.
Now all you need to do is download the key and send it to the contacts that you want to have access to the email, this ensures that there is no third-party meddling around. That said I would once again caution you on safeguarding the key without which the encryption is pretty useless.
Composing Encrypted Emails
In order to compose an email, both you and your friend need to have exchanged public keys, and both need to import each other key by selecting the “Import Keys” on the left-hand side. Again be careful as to not import the same key. In order to import you need to paste your contact’s public key into the text box and then hit the “Import” button.
Now access your webmail as you usually do and start typing. Once you start typing you will see a tiny logo on the right similar to the screenshot above. Clicking on the same will take you to an encrypted compose window. This will also ensure that your emails done to get saved in drafts on your usual email server.
In case you receive an encrypted message from someone hover your pointer over the message and an envelope icon will appear. Once prompted enter the password for the email and you will be good to go.
Encrypt Emails with Virtru Secure Email encryption
The older public-key encryption will not suit everyone’s needs. Most of the users these days prefer using an encryption method like S/MIME that will protect your email, however this only works if you are sending emails within the organization. Also since many of them don’t use the S/MIME standard they will not be able to access the encrypted email.
Don’t fret the best way out of this is to use Virtru Secure Email extension for Microsoft Outlook. Download the Virtru Secure Email plugin from its official website and then run the file once the installation is complete.
Restart Outlook and you will see a Virtru Welcome screen. Click on “Authorise Me” and now select the email address you want to authorize. Click “Activate these emails” and you are good to go.
As seen in the screenshot the Virtru toggle will appear in your Outlook. Ensure that the button is inactive state whenever you are sending the message. The entire encryption process is extremely effortless as opposed to the PGP one.
All you need to do is ensure that the Virtru toggle is switched On when you are sending an email and that’s it the extension manages the rest of your troubles. Now at the recipient’s end, things are sorted if they have Virtru but if they don’t then they need to install a Virtru Secure Reader.
The Reader is verified by either logging by their Gmail account or by verifying their email with a link. Once your identity is verified the recipient can read the message directly. Furthermore, the recipients can reply by using the secure reader and the attachments they send will also be encrypted.
Other useful features include an option to set an expiration date, yes with this extension you can explicitly specify when your message should expire before you send it. Yet another mention worthy feature is to Disable Forward, needless to say, this will ensure that the recipient cannot forward the message to anyone.
Virtru is free for personal use and you can download it here for Outlook and Firefox. If you are a Chrome user, you can download the Virtru Chrome Extension. There are other free Email Encryption Add-ins for Outlook too that are available.
Read: How to Add a Digital Signature to Outlook.
Encrypt email messages in Outlook
Microsoft Outlook has a security feature to offer. While composing a message go to File > Properties. After that click on Security Settings and then select Encrypt message contents and attachments checkbox. Once you are done composing the message simply click on Send.
In case you want to encrypt all the outgoing messages you can do so by clicking on the File tab and selecting Options > Trust Center > Trust Center Settings. Now you need to toggle on the encryption for every message and this can be done by heading over to Email Security tab under the encrypted email and select the following option “Encrypt contents and attachments for outgoing messages.” Also, you can head over to Settings and choose a specific certificate too.
If the recipient doesn’t have the corresponding private key, he will see this message:
This item cannot be displayed in the Reading Pane. Open the item to read its contents.
And if he tries to open the item, he will see this message:
Sorry, we’re having trouble opening this item. This could be temporary, but if you see it again you might want to restart Outlook. Your Digital ID name cannot be found by the underlying security system.
I hope you find this post useful.
