DEPRECATED - D8 File Encrypt moved to Drupal.org
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readme.md

File Encrypt

The file encrypt module allows you to encrypt files uploaded via Drupal using the encrypt and key modules. When the files are requested, they'll get decrypted automatically.

Configure file encrypt

Ideally first configure a different path at which the encrypted files should be stored. Similar to private files you need an entry in settings.php for that:

$settings['encrypted_file_path'] = '';

The next step is to go to your file/image field settings and click on "field settings". Under upload destination choose 'Encrypted files'.

Encrypt file metadata

For encrypting metadata like title and description use the field_encrypt method. @TODO

Architecture

The overall architecture contains of one key compoment: an encrypt:// stream wrapper. It supports URLs looking like encrypt://{encryption_profile}/folder/filename.extension

On \Drupal\file_encrypt\EncryptStreamWrapper::stream_close it writes encrypted data to the filesystem. On \Drupal\file_encrypt\EncryptStreamWrapper::stream_open it reades encrypted data and decrypts it.

On top of that the module registers a route on /encrypt/files/{encryption_profile}/{...filepath}, which passes along the profile and filepath to the stream wrapper. This allows to use the stream wrapper via HTTP.