Serialization of secret key

[tlepoint]

Serialization and deserialization of a SecretKey is not yet implemented, but will be required for anything that goes beyond "example" code.

[shankars99]

Hey just a heads up I'm working on this one

[shankars99]

Should I add some encryption like AES to the secret key when it is written to or read from a file? Right now it's in plain text

[zefr0x]

Should I add some encryption like AES to the secret key when it is written to or read from a file? Right now it's in plain text

Does it work now?
There seem to be some code related to serialization in the repo, but I couldn't figure how to use it. Can it be done for PublicKeyShare?

[oiwn]

anyone working on this?

[oiwn]

I'll take it!

[zefr0x]

I'll take it!

See #278 and https://github.com/zefr0x/pulp/tree/implserde

As of what I can recall, most of the remaining work is in pulp.

At the time I just implemented what I needed in my fork of pulp, nothing else. It was just to get my project running, so most likely there are improvements and refactoring that must be done.

You might find a way and refactor the implementation to add serialization support without requiring support from pulp.

I'm out of context of the work that has been done in the last year.

[oiwn]

Hmm… A simple solution would probably be good enough. As far as I understand, secret keys are sparse, so it should be possible to serialize only the non-zero values (at least that’s how it is in CKKS, which I’m somewhat familiar with). I’ll need to check this.

[oiwn]

Maybe like this? #316

[oiwn]

@tlepoint probably need to close it? Feel free to add few more easy issues i can take!