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Uses bash script with b2 python CLI to encrypt and upload to a Backblaze B2 backup bucket.

Just a simple project as I wanted to implement my own backup system that fully encrypts the files but still retains paths for future restores.

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Uses OpenSSL with a password key file (tested using an RSA key generated via ssh-keygen)

It is preferred to have 2 different password key files to prevent a single hack to be able to break the filename and the file itself.

Uses a base64 AES-256-CBC method to produce the filename as well as concatenating a sha1sum for confirmation of the file contents once decrypted (on restore).

Filenames are also base64'd after the encryption to ensure they are valid as filenames

Uses AES-256-CBC as well for the file encryption, this is simplified by not adding a salt for reduced complexity on decryption.

Since this is a bash script, this obviously requires BASH.

This is currently tested and being run on Windows 10 with the Ubuntu BASH shell system running as well as ArchLinux.

Caveat on running it within Windows is that it needs to run using SUDO or as root even if it is only running to backup user directories.

Read about it here: https://www.howtogeek.com/249966/how-to-install-and-use-the-linux-bash-shell-on-windows-10/

client.config - Required to have variables set for configuration, pointing to important files required for information such as directories to backup and API key.

DirsToBackup.config - List of directory paths to check for files and backup, creates a blank one when not available. This name can be changed in the client.config tile to any name.

apikey.config - file that contains the Backblaze App API key in the format "ACCOUNTID:APIKEY" where the account id and API key are separated by ":". This file name can be changed in the client.config file.

Can enable debug logging and terminal echo by enabling DEBUG=1 on the client.config file.

upload log - stores a manifest/list of all files uploaded today and their corresponding encrypted filenames

backup log - log file for each showing what the script has done on that run

The current Download script (Restore) is capable of restoring 1 file with the uploaded filename as the parameter provided. The filename can be found on the upload log

 ./DownloadFromBackup.sh "B2-FILENAME"