An encrypted archive can sit on a shelf for years. That long life is why the ZUPT backup tool’s arrival in openSUSE Factory is interesting. OpenSUSE announced the acceptance on October 4. The tool brings compression, integrity checks and hybrid post-quantum encryption into the same package.
What the ZUPT backup package adds
The project describes a utility for packing files and directories into archives, checking them and restoring their contents. It also uses multiple CPU cores. Factory acceptance is the development announced this week; openSUSE has not said that all users must switch backup tools.
There is a related distinction for people trying Leap’s new installation options. Our report on Leap 16.1 RC and Immutable Mode explains that work. Think separately about recovering the operating system and recovering your documents. A test installation should not put the only copy of either at risk.
Two kinds of protection
ZUPT supports AES-256 encryption. Its hybrid scheme combines ML-KEM-768 and X25519. OpenSUSE connects that design to the possibility of someone collecting encrypted data now, keeping it, and attacking it with stronger computers later. Integrity verification serves another purpose: checking for corruption or changes in the archive.
ML-KEM has a standards background
NIST finalized its first post-quantum standards in August 2024. The US agency describes algorithms built to resist a future, sufficiently capable quantum computer. ML-KEM is the name used in FIPS 203 for a key-encapsulation mechanism. NIST encourages administrators to start integrating the new standards because that transition takes time.
That background helps explain the choice of technology. It is not a certification of ZUPT by NIST. Nor does the openSUSE announcement turn an encrypted archive into a complete recovery plan by itself.
The unglamorous test that still matters
Take a copied folder, make an archive, and restore it into a different location. Open the restored files. A text document, some photos and a larger file make a better trial than an empty folder. Keep the originals throughout.
Then try answering a harder question: could you do the same restore if this computer stopped booting tomorrow? You would need the archive, the necessary key or password, and a working way to run the tool. A note stored only on the broken machine would be little help.
For now, keep your existing backups running while you examine ZUPT. Record what you used and how the restore worked. The new encryption option is worth understanding, but a backup earns its place in a routine by bringing the files back when you need them.