generate/import/certify key(s) silently on cmd

[Lema KB]

hi all

Could you please help me, how i *silently* generate key-pair, and import
other's public key and then certify this public key on command-line of
windows(cmd.exe)? i mean, setting all as default, and asking only for
key-name and passphrase..

or is it possible to import and certify someones public-key without
generating own key-pair?

thank you in advance
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