Comeonin.Config

This module provides an abstraction layer for configuration. The following are valid configuration items.

crypto_mod is only needed for some convenience functions in the main Comeonin module. With this setting, you can decide which algorithm you want to use, :bcrypt or :pbkdf2, to hash the password.

Please read the documentation for the main Comeonin module, which explains why the default values for bcrypt_log_rounds and pbkdf2_rounds are not always the best values to use.

pass_length is for use with the gen_password function in the Comeonin.Password module and is the default length of the generated password. pass_min_length is for use with the valid_password? function in the same module and is the minimum allowed length.

Examples

The simplest way to change the default values would be to add the following to the config.exs file in your project.

config :comeonin,
  crypto_mod: :pbkdf2,
  bcrypt_log_rounds: 14,
  pbkdf2_rounds: 100_000,
  pass_length: 16,
  pass_min_length: 12

If you want to have different values when developing and testing, you can create separate files for each environment: dev.exs, prod.exs and test.exs, and add the configuration values to the respective file.

For example, in test.exs and dev.exs:

use Mix.Config

config :comeonin,
  bcrypt_log_rounds: 4,
  pbkdf2_rounds: 1_000

And in prod.exs:

use Mix.Config

config :comeonin,
  bcrypt_log_rounds: 14,
  pbkdf2_rounds: 100_000

If you use separate files for the different environments, remember to add, or uncomment, the line import_config "#{Mix.env}.exs" to the config.exs file.