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Example code of plenta/contao-encryption

Informations about the package contao-encryption

Contao Encryption

A replacement service for the deprecated Contao encryption class (Contao\Encryption).
Please set an encryption key before using the dca callbacks or encryption services.

Install using Contao Manager

Search for encryption and you will find this extension.

Install using Composer

Upgrade to 3.0.0 and above

The underlying phpseclib extension has been upgraded to version 3 since plenta/contao-encryption 3.0.0.
phpseclib 2 used to truncate the encryption key to 56 characters and phpseclib 3 does not truncate the encryption key.
There is a new parameter plenta_contao_encryption.truncate_encryption_key to keep the extension backwards compatible. The default value is true. This means the encryption still works like phpseclib2. If you want to use longer encryption keys you have to set the plenta_contao_encryption.truncate_encryption_key parameter to false.

If you set the plenta_contao_encryption.truncate_encryption_key parameter to false and you have already encrypted data with an encryption key longer then 56 characters on your system you will not be able to decrypt your data.

Encryption Key

Please read this thoroughly otherwise you might lose all your encrypted data!

This extension uses the standard encryption key %kernel.secret% as default. Symfony recommends changing the %kernel.secret% periodically. Therefore, it is highly recommended setting a dedicated encryption key for this extension.

Truncate encryption key

phpseclib 2 used to truncate the encryption key to 56 characters and phpseclib 3 does not truncate the encryption key.
The parameter plenta_contao_encryption.truncate_encryption_key has been introduced in version 3.0.0 to keep the extension backwards compatible. The default value is true. This means the encryption still works like phpseclib2. If you want to use longer encryption keys you have to set the plenta_contao_encryption.truncate_encryption_key parameter to false.

If you set the plenta_contao_encryption.truncate_encryption_key parameter to false and you have already encrypted data with an encryption key longer then 56 characters on your system you will not be able to decrypt your data.

How to set a dedicated encryption key

The config parameter is called encryption_key and it lives under the namespace plenta_contao_encryption. Its value should be a series of characters, numbers and symbols chosen randomly and the recommended length is around 32 characters.

Keep a backup of your encryption key. If you lose it you can not recover your data.
If you want to change the encryption key, you have to decrypt all your encrypted data with the old encryption key and then encrypt it with the new one.

You can also use environment variables.

Example > DCA

Example > Url parameter

All versions of contao-encryption with dependencies

PHP Build Version
Package Version
Requires php Version ^7.4 || ^8.0
contao/core-bundle Version ^4.4 || ^5.0
phpseclib/phpseclib Version ^3.0.14
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