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Verifier

Verifier is created using govpn-verifier utility.

% govpn-verifier
Passphrase:[hello world]
$argon2d$m=4096,t=128,p=1$bwR5VjeCYIQaa8SeaI3rqg$KCNIqfS4DGsBTtVytamAzcISgrlEWvNxan1UfBrFu10
$argon2d$m=4096,t=128,p=1$bwR5VjeCYIQaa8SeaI3rqg

First line is the verifier for the server side. Second line is for the client – it lacks generated public key. However you can use server’s one on the client side too.

You can check passphrase against verifier by specifying -verifier option with the path to verifier file:

% govpn-verifier -verifier '$argon2d...'
Passphrase:[hello world]
true

Optionally you can store plaintext passphrases on volatile memory (memory disk, encrypted filesystem with restrictive permissions to the file) and provide -key option.