Encrypt patient data at rest and in backup files. #251
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Intended for use with the Buendia system key.
Specifically for encryption support.
Essentially, ensure that openmrs.zip and buendia.tar.gz are encrypted using the Buendia system key. The patient chart ZIP is already encrypted with the OpenMRS server password, so we're leaving that untouched for now.
before decrypting. This will hopefully minimize the risk of running out of space on the backup storage device, since the decryption process has to make a copy of the output on disk.
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This PR accomplishes a few things:
/usr/share/buendia/system.keythat is created if not already present duringbuendia-utilspostinstall.buendia-mysqlto use this secret to encrypt a separate set of database keys, and updates the database dependency to MariaDB > 10.1.4 to guarantee that AES-CTR encryption-at-rest is available.buendia-backupto use the system key to encrypt OpenMRS and Buendia configuration data on backup, and to decrypt with same on restore.buendia-backupto backup and restore the system key itself to an external storage device, whenever an external device is used for backup or restore.This PR lays the groundwork for the security reset mode as described in #250 .
The encryption-at-rest, backup, and restore functions are all tested to some extent in integration tests that work in Vagrant. I've tested this functionality manually both on a fresh Vagrant system, and as an upgrade to an existing Vagrant system.