Digitally signed livebook cells

Elixir Framework Forums Livebook Forum
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I’m currently exploring how Livebook can be utilised in forensic scenarios such as law enforcement or cybersecurity, specifically for investigating digital data. Something like Maltego but more flexible and linear.

A key requirement for maintaining a valid chain of evidence is digitally signing the data within Livebook, particularly the queried or transformed data in the cells.

Is there any feature/hook in Livebook that allows for digital signing of cell content, including input and output? For instance, using a personal digital certificate, such as a X509 certificate stored on a token via PKCS#11.

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Livebook has the concept of smart cells, where you can create your own cell with additional metadata, and perhaps they could be used as a foundation to build what you need? livebook/lib/livebook/notebook/learn/kino/smart_cells.livemd at main · livebook-dev/livebook · GitHub

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That’s a great idea. SmartCells acting as 'in-between" checkpoints with signatures. I need to consider this further, but initially, it seems it could smoothly fit into the workflow without requiring any modifications to other cells.

Thanks a lot!

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