Imports github.com/makiuchi-d/gozxing github.com/makiuchi-d/gozxing/qrcode github.com/skip2/go-qrcode golang.org/x/crypto/bcrypt Standard library imports bytes crypto/hmac crypto/sha1 crypto/sha512 encoding/base32 encoding/base64 encoding/binary fmt image image/color math/rand os strconv strings time