substrate-api-client
                                
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                        CLI wallet with password encryption
Implement password encryption in the CLI, as decribed here
also consider this original comment from @brenzi on this task: the current use of the keystore doesn't provide good devX, because the name of the files in the keystore is cryptic, so it's hard to find out which mnemonic belongs to which address. Moreover, a few use cases would need at least password protection.
I did a bit of research regarding file encryption crates. These are the ones I found:
- https://crates.io/crates/age
- https://crates.io/crates/cocoon
- https://crates.io/crates/sodiumoxide (secretbox)