andreyk

The plugin increases security of a site in case it has no SSL certificate, 
useful for owners of small sites who want to secure their passwords and 
other posted data but don’t want to buy SSL certificate for each domain 
and subdomain: it protects from sniffering the most important data such as 
passwords when they are being sent from forms of your site to the server.
When the form served by the plugin is submitted all input data are being 
joined into a string, then this string is being encrypted with AES algorythm 
by disposable key and only encrypred string will be sent.
A browser encrypts the disposable key in javascript by the RSA public key 
and sends it to the server; then the server decrypts it with the RSA private 
key and then use it to decrypt the posted data with AES.
Translations included: Ukrainian, Russian, German and Brazilian Portuguese.
I just adapted usage in WordPress the jCryption jQuery plugin, v. 3.1.0. 
Please check www.jcryption.org to learn how jCryption works.

WP jCryption Security

Prevents forms data against sniffing network traffic through encryption provided by jCryption javascript library.

CodeLeaf

EmailProtect
Version 4.0.3
WARNING! Breaking changes: Version 4.0.x does no longer support the MailEncrypt Gutenberg Block. Your email addresses are still protected
<h3>WordPress anti-spam email plugin</h3>
Simple, fast and no-config plugin to protect your email address. No need for shortcodes or blocks. EmailProtect encrypts all your email addresses in your blog.
<h3>Usage</h3>
Only install and activate EmailProtect in your WordPress backend. Now all your email addresses are protected against spam-bots. No configuration required.
<h3>How are my email addresses encrypted?</h3>
EmailProtect scans all of your posts, sites and other content for email addresses. If an email address is found, it is simply replaced with a special tag. 
If a bot is now crawling your site, the tag cannot be decrypted. Only for an actual user our script decrypts this tag and the email address can be viewed.
Example
This is what your user sees:
Here is my email address <a href="mailto:contact@code-leaf.de" rel="nofollow ugc">contact@code-leaf.de</a>.
This is what a spam-bot sees:
<pre><code>Here is my email address
<a href ="#" data-email-protect-click="eqpvcevBeqfg/ngch0fg">
 
</a>
</code></pre>
<h3>Versions</h3>
<ul>
<li>
4.0.3
<ul>
<li>updated dependencies</li>
</ul>
</li>
<li>
4.0.2
<ul>
<li>shortcode renders to <code></code> not <code></code></li>
<li>legacy index files added</li>
</ul>
</li>
<li>
4.0.1
<ul>
<li>better email recognition</li>
<li>fixed bugs</li>
</ul>
</li>
<li>
4.0.0
<ul>
<li>breaking changes for users of version 3.0 or older</li>
<li>Gutenberg-Block deprecated</li>
<li>ClassicEditor menu integration deprecated</li>
<li>backend menu removed</li>
<li>refactored complete code base</li>
<li>shortcode deprecation in version 5</li>
</ul>
</li>
<li>
3.0
<ul>
<li>new design</li>
<li>renaming</li>
<li>integration in Gutenberg Editor via ‘MailEncrypt Block’</li>
<li>backend generator running now on client</li>
<li>fixed bugs</li>
</ul>
</li>
<li>
2.0.3
<ul>
<li>added Internationalization</li>
<li>added German language pack</li>
</ul>
</li>
<li>
2.0.2
<ul>
<li>updated readme</li>
<li>fixed 2.0.1 bug also in js files</li>
</ul>
</li>
<li>
2.0.1
<ul>
<li>fixed wrong shortcode</li>
</ul>
</li>
<li>
2.0
<ul>
<li>better compatibility with modern WordPress versions</li>
<li>main language: english</li>
<li>removed bugs and side effects</li>
<li>ajax handling with wp core</li>
<li>menu page instead of options page (included stylesheet now locally)</li>
<li>js updated to ES6 (if usable)</li>
<li>removed deprecated php functions</li>
</ul>
</li>
<li>
1.0
<ul>
<li>js function added</li>
<li>0.3 bugs fixed</li>
</ul>
</li>
<li>
0.3
<ul>
<li>changed menu for generating encrypted email addresses</li>
<li>changed icon in tinymce editor</li>
<li>menu css and js now serving per cdn</li>
<li>now working with WordPress 4.7.3</li>
</ul>
</li>
<li>
0.2.3
<ul>
<li>menu with Bootstrap</li>
</ul>
</li>
<li>
0.2.2
<ul>
<li>menu added</li>
<li>ajax text-to-encrypted-text generator added</li>
</ul>
</li>
<li>
0.2.1
<ul>
<li>bugs v0.2 repair</li>
</ul>
</li>
<li>
0.2
<ul>
<li>added button in tinymce editor for easy shortcode creation</li>
</ul>
</li>
<li>
0.1
<ul>
<li>initial Version</li>
</ul>
</li>
</ul>
Til version 4.0.0 known as ‘WP Mail Encrypt’, til version 3.0 known as ‘Mail Crypter’
<h3>Source</h3>
wordpress.org: 
<a href="https://de.wordpress.org/plugins/email-protect/" rel="nofollow ugc">https://de.wordpress.org/plugins/mail-protect/</a>
The full sourcecode can be found on github:
github.com: 
<a href="https://github.com/mc17uulm/email-protect" rel="nofollow ugc">https://github.com/mc17uulm/mail-protect</a>

Email Protect

Simple, fast and no-config plugin to protect your email address. No need for shortcodes or blocks. EmailProtect encrypts all your email addresses in y …

WP jCryption Security vs Email Protect