What went wrong?

I'm getting deprecation warnings with openSSL encryption.

[2019/09/05 08:38:52][info] Using Encryptor::OpenSSL to encrypt the archive.
[2019/09/05 08:40:22][warn] Pipeline STDERR Messages:
[2019/09/05 08:40:22][warn] (Note: may be interleaved if multiple commands returned error messages)
[2019/09/05 08:40:22][warn]
[2019/09/05 08:40:22][warn] *** WARNING : deprecated key derivation used.
[2019/09/05 08:40:22][warn] Using -iter or -pbkdf2 would be better.

What steps did you follow?

1. backup perform --trigger config
2. Check the log output

How is your copy of backup configured?

Use config encryption step:

encrypt_with OpenSSL do |encryption|
encryption.password = 'Some password'
encryption.base64 = true
encryption.salt = true
end

Tell us about the computer that runs the backup gem

• Operating system: Ubuntu 18.04.2 LTS
• Backup 4.4.1
• openssl version OpenSSL 1.1.1 11 Sep 2018