Imports github.com/hgfischer/go-otp github.com/mattn/go-sqlite3 github.com/urfave/cli rsc.io/qr Standard library imports bufio bytes crypto/rand crypto/rsa crypto/sha256 crypto/x509 database/sql encoding/pem errors fmt image image/png io io/ioutil log net/http os os/user path/filepath strings text/tabwriter time