Title: WP jCryption Security
Author: andreyk
Published: <strong>2015年1月1日</strong>
Last modified: 2015年5月16日

---

プラグインを検索

![](https://ps.w.org/wp-jcryption/assets/banner-772x250.png?rev=1057868)

このプラグインは **WordPress の最新3回のメジャーリリースに対してテストされていま
せん**。もうメンテナンスやサポートがされていないかもしれず、最新バージョンの WordPress
で使用した場合は互換性の問題が発生する可能性があります。

![](https://s.w.org/plugins/geopattern-icon/wp-jcryption_68bca9.svg)

# WP jCryption Security

 作者: [andreyk](https://profiles.wordpress.org/andreyk/)

[ダウンロード](https://downloads.wordpress.org/plugin/wp-jcryption.zip)

 * [詳細](https://ja.wordpress.org/plugins/wp-jcryption/#description)
 * [レビュー](https://ja.wordpress.org/plugins/wp-jcryption/#reviews)
 *  [インストール](https://ja.wordpress.org/plugins/wp-jcryption/#installation)
 * [開発](https://ja.wordpress.org/plugins/wp-jcryption/#developers)

 [サポート](https://wordpress.org/support/plugin/wp-jcryption/)

## 説明

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.

## スクリーンショット

 * [[
 * HTTP headers without encryption.
 * [[
 * Log-in process encrypted by WP jCryption.

## インストール

Upload wp-jcryption.zip using the wordpress plugin installation interface
 and activate
the plugin. On the very first activation 1024-bit RSA key pair will be generated
and the list of forms the plugin is primarily destinated for will be saved. You 
may add other form IDs to this list on the plugin settings page: Settings – WP jCryption.

## FAQ

  Installation Instructions

Upload wp-jcryption.zip using the wordpress plugin installation interface
 and activate
the plugin. On the very first activation 1024-bit RSA key pair will be generated
and the list of forms the plugin is primarily destinated for will be saved. You 
may add other form IDs to this list on the plugin settings page: Settings – WP jCryption.

  Why should I use this plugin?

If you don’t use https on your site your password could be stolen through
 man-in-
the-middle attack when you are submitting log-in form because form data (including
password) are being sent as plain text. This plugin encrypts submitted data in a
way similar to https transmission.

  Does this plugin encrypts transmission of my site pages entirely?

No. The plugin encrypts only data being posted from most important forms
 (that 
contain password fields: login, reset password, user profile) and forms you specify
additionally. To secure all incoming and outgoing traffic of your site a SSL certificate
is needed.

  I have SSL certificate installed on my site already. Do I need to install the 
plugin?

No.

  Can I check whether the form data are being sent encrypted?

Yes, you can do it by means of Firefox LiveHTTPHeaders extension, Fiddler or similar
tools.

  What are system requirements for the plugin?

PHP version >= 5.3 with OpenSSL PHP extension.

  Do I need to generate RSA private and public key files with Linux commands?

No. PHP generates keys for you and save them in a database. So, this plugin is usable
on (almost) any shared hosting.

  The plugin works with login form but disables other form during it’s being submitted.

Try to enable the plugin option: Fix button id=”submit” and name=”submit”.

## 評価

![](https://secure.gravatar.com/avatar/b6853eab0d51da161561de8cca10ba04b2cea39ed97c1f728acea8fcc5ffe617?
s=60&d=retro&r=g)

### 󠀁[Don't have SSL? Then this is indispensable!](https://wordpress.org/support/topic/dont-have-ssl-then-this-is-indispensable/)󠁿

 [Gahapati](https://profiles.wordpress.org/gahapati/) 2016年9月3日

For a number of years I found this plugin to be quite indispensable, since until
recently I did not have access to SSL-encryption. If ever I were to set up WordPress
on a server that lacked SSL again, WP jCryption Security would be the first plugin
to install!

![](https://secure.gravatar.com/avatar/93a1c7798169c84b5cabf316a321e86190361e5b82a8ae0f19770f0546fcde42?
s=60&d=retro&r=g)

### 󠀁[Great](https://wordpress.org/support/topic/great-4369/)󠁿

 [sotnas](https://profiles.wordpress.org/sotnas/) 2016年9月3日

A small necessary tool!

 [ 3件のレビューをすべて表示 ](https://wordpress.org/support/plugin/wp-jcryption/reviews/)

## 貢献者と開発者

WP jCryption Security はオープンソースソフトウェアです。以下の人々がこのプラグイン
に貢献しています。

貢献者

 *   [ andreyk ](https://profiles.wordpress.org/andreyk/)

[“WP jCryption Security” をあなたの言語に翻訳しましょう。](https://translate.wordpress.org/projects/wp-plugins/wp-jcryption)

### 開発に興味がありますか ?

[コードを閲覧](https://plugins.trac.wordpress.org/browser/wp-jcryption/)するか、
[SVN リポジトリ](https://plugins.svn.wordpress.org/wp-jcryption/)をチェックするか、
[開発ログ](https://plugins.trac.wordpress.org/log/wp-jcryption/)を [RSS](https://plugins.trac.wordpress.org/log/wp-jcryption/?limit=100&mode=stop_on_copy&format=rss)
で購読してみてください。

## 変更履歴

#### 0.5.1

 * Minified javascript.

#### 0.5

 * Minified javascript.
 * Changed endpoint URL to avoid it got cached by caching plugins.
 * Unset session jCryptionKey after decryption.

#### 0.4.1

 * German and Brazilian Portuguese translations by Matthias.

#### 0.4

 * removed unnecessary printing $_POST in the end of wp_jcryption_entry function
   (
   it was there for testing purpose but could be a target for XSS, thanks to Konstantin
   Kovshenin for this notice).

#### 0.3

 * ‘fix_submit’ plugin setting is checked on install to let the plugin work with
   the user profile form;
 * testing of system requirements enhanced.

#### 0.2

 * jCryption entry point moved into the ‘plugins_loaded’ action.

#### 0.1

 * initial version, with separate entry point file using SHORTINIT.

## メタ

 *  バージョン **0.5.1**
 *  最終更新日 **11年前**
 *  有効インストール数 **40+**
 *  WordPress バージョン ** 3.8.1またはそれ以降 **
 *  検証済み最新バージョン: **4.8.28**
 *  言語
 * [English (US)](https://wordpress.org/plugins/wp-jcryption/)
 * タグ
 * [encryption](https://ja.wordpress.org/plugins/tags/encryption/)[forms](https://ja.wordpress.org/plugins/tags/forms/)
   [login](https://ja.wordpress.org/plugins/tags/login/)[password](https://ja.wordpress.org/plugins/tags/password/)
   [security](https://ja.wordpress.org/plugins/tags/security/)
 *  [詳細を表示](https://ja.wordpress.org/plugins/wp-jcryption/advanced/)

## 評価

 5つ星中4.7つ星

 *  [  2 5-星レビュー     ](https://wordpress.org/support/plugin/wp-jcryption/reviews/?filter=5)
 *  [  1 4-星レビュー     ](https://wordpress.org/support/plugin/wp-jcryption/reviews/?filter=4)
 *  [  0 3-星レビュー     ](https://wordpress.org/support/plugin/wp-jcryption/reviews/?filter=3)
 *  [  0 2-星レビュー     ](https://wordpress.org/support/plugin/wp-jcryption/reviews/?filter=2)
 *  [  0 1-星レビュー     ](https://wordpress.org/support/plugin/wp-jcryption/reviews/?filter=1)

[Your review](https://wordpress.org/support/plugin/wp-jcryption/reviews/#new-post)

[すべてのレビューを見る](https://wordpress.org/support/plugin/wp-jcryption/reviews/)

## 貢献者

 *   [ andreyk ](https://profiles.wordpress.org/andreyk/)

## サポート

意見や質問がありますか ?

 [サポートフォーラムを表示](https://wordpress.org/support/plugin/wp-jcryption/)