Déjà Dup Backup Tool

What encryption algorithm is used? (AES-128, AES-256, CAST5, DES)

Asked by andrey_campbell on 2011-10-29

You might say that this has been answered here:

https://answers.launchpad.net/deja-dup/+question/130020

- but it's not answered.

Merely saying that it's symmetric encryption does not answer the question.

Just repeating that person's question: "GnuPG has many cipher suites, modes and key sizes. Which cipher suite, mode and keysize is used from GnuPG to encrypt the data files ?"

I wouldn't trust Deja Dup to encrypt my data with a weak encryption algorithm. There are hundreds of symmetric encryption algorithms, and I could come up with one in just 10 lines of code (that could be cracked in 2 minutes).

So again: what encryption algorithm is used, and how can I control which one from the many GnuPG supports is being used?

Question information

Language:
English Edit question
Status:
Answered
For:
Déjà Dup Edit question
Assignee:
No assignee Edit question
Last query:
2011-10-29
Last reply:
2011-10-31

To clarify further: Duplicity has many parameters that can be used to control the encryption algorithm used by GnuPG. So the better question to ask is: which of the many algorithms Duplicity knows about (from the ones supported by GnuPG) is being used, and how can I control that?

Michael Terry (mterry) said : #2

Deja Dup uses the default in GnuPG, which as of this writing is CAST5. This can't be changed via Deja Dup.

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