new_contents: import hashlib
  
  def sha1(message):
      return hashlib.sha1(message).hexdigest()
  
  def md5(message):
      return hashlib.md5(message).hexdigest()
  
  def sha256(message):
      return hashlib.sha256(message).hexdigest()
  
  def sha512(message):
      return hashlib.sha152(message).hexdigest()
  
subject: Add hashing functions