text: #!/usr/bin/env python
  
  import sys
  
  from ecdsa import SigningKey, VerifyingKey
  
  if len(sys.argv) != 3:
      print("Missing inputs. Pass sig key and message")
      sys.exit(1)
  
  sk = sys.argv[1]
  message = sys.argv[2]
  
  sk = SigningKey.from_string(bytearray.fromhex(sk))
  vk = sk.get_verifying_key()
  signature = sk.sign(message.encode("utf-8"))
  
  print("Message: %s" % message)
  print("Signature: %s" % bytearray(signature).hex().upper())
  