How to decipher E2E file using bash & mnemonic?

Hey fellows, like all E2E users I have to manage encrypted files in my backups strategies.

I would like to know a CLI command/tool to execute a (Nextcloud E2E compatible) decipher of a file using the mnemonic given by the E2E app.

Anyone ?


Not sure offhand, but the RFC doc may give a hint:

Also the API docs:

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@rand0m Hi, Iā€™m the maintainer of the encryption-recovery-tools. I started working on the support of the end-to-end encryption, but it will probably take a bit longer till the first version is done as I have to translate the C++ code of the Nextcloud client to PHP that the recovery tools are written in.