# Method __builtin.Nettle.Hash()->P_hash()

Method P_hash

  ``string(8bit)` P_hash(`string(8bit)` `password`, `string(8bit)` `salt`, `int` `rounds`, `int` `bytes`)`

Description

  This is the Password-Based Key Derivation Function used in TLS.

Parameter `password`

  The prf secret.

Parameter `salt`

  The prf seed.

Parameter `rounds`

  Ignored.

Parameter `bytes`

  The number of bytes to generate.