docs: def scrypt(password, salt, N=SCRYPT_N, r=SCRYPT_r, p=SCRYPT_p, olen=64):
      """Returns a key derived using the scrypt key-derivarion function
  
      N must be a power of two larger than 1 but no larger than 2 ** 63 (insane)
      r and p must be positive numbers such that r * p < 2 ** 30
  
      The default values are:
      N -- 2**14 (~16k)
      r -- 8
      p -- 1
  
      Memory usage is proportional to N*r. Defaults require about 16 MiB.
      Time taken is proportional to N*p. Defaults take <100ms of a recent x86.
  
      The last one differs from libscrypt defaults, but matches the 'interactive'
      work factor from the original paper. For long term storage where runtime of
      key derivation is not a problem, you could use 16 as in libscrypt or better
      yet increase N if memory is plentiful.
      """
      check_args(password, salt, N, r, p, olen)
  
      try:
          return _scrypt(password=password, salt=salt, N=N, r=r, p=p, buflen=olen)
      except:
          raise ValueError