Encryption and decryption don't work

[pata2004]

I UNCOMMENTED THE FOLLOWING LINES:
FILE: backup-mysql.sh
uncomment line 11 => encryption_key_file="${parent_dir}/encryption_key"
uncomment Line 37 => declare -ga innobackupex_args=(
uncomment line 38 => "--encrypt=AES256"
uncomment line 39 => "--encrypt-key-file=${encryption_key_file}"
uncomment line 40 => "--encrypt-threads=${processors}"
uncomment line 41 => "--slave-info"
uncomment line 42 => "--incremental"
Add the symbol line 43 => )

FILE: extract-mysql.sh
uncomment line 6 => encryption_key_file="/backups/mysql/encryption_key"
uncomment line 35 => Check whether the encryption key file is available
uncomment line 36 => if [ ! -r "${encryption_key_file}" ]; then
uncomment line 37 => error "Cannot read encryption key at ${encryption_key_file}"
uncomment line 38 => fi
uncomment line 51 => "--decrypt=AES256"
uncomment line 52 => "--encrypt-key-file=${encryption_key_file}"

WHEN I MADE "sudo su - backup extract-mysql.sh *.xbstream" I GET THE FOLLOWINGS ERRORS:
Extracting file incremental-06-22-2018_06-13-55.xbstream
mkdir: created directory './restore/incremental-06-22-2018_06-13-55'
/usr/local/bin/extract-mysql.sh: line 50: incremental-06-22-2018_06-13-55.xbstream: No such file or directory
/usr/local/bin/extract-mysql.sh: line 51: --decrypt=AES256: command not found
/usr/local/bin/extract-mysql.sh: line 52: --encrypt-key-file=/backups/mysql/encryption_key: No such file or directory
mariabackup based on MariaDB server 10.3.7-MariaDB Linux (x86_64)
180622 06:14:22 completed OK!
Finished work on incremental-06-22-2018_06-13-55.xbstream

BUT I HAVE:

• incremental-06-22-2018_06-13-55.xbstream
• encrypt-key-file=/backups/mysql/encryption_key

IT'S A BUG OR I MADE SOMETHING WRONG?
Many thanks

[lexelby]

I believe mariabackup does not support encryption, which is why those lines were commented out when @nullart added support for MariaDB.

Instead, try piping your backup through openssl enc encrypt -aes-256-cbc -salt -kfile <key file>.