get random strings from your mic

random.sh

#!/usr/bin/env bash

clip() {
  # sync clipboards
  xclip -o | xclip -sel clip

  # print to stdout
  xclip -o
}

audioSource() {
  # record 1 second of audio
  arecord -d 1 /tmp/rand.wav
}

hmac() {
  # hmac of audio with random key -> base64 32
  hmac256 --binary $(openssl rand --base64 32) /tmp/rand.wav | base64 | cut -c 1-32 | xclip
}

clean() {
  # cleanup
  rm /tmp/rand.wav
}

main() {
  audioSource
  hmac
  clip
  clean
}

main