egadstar / sequel_secure_password

Plugin that adds BCrypt authentication and password hashing to Sequel models.

Sequel secure_password

Plugin adds BCrypt authentication and password hashing to Sequel models. Model using this plugin should have password_digest field.

This plugin was created by extracting has_secure_password strategy from rails.

Installation

Add this line to your application's Gemfile:

gem 'sequel_secure_password'

And then execute:

$ bundle

Or install it yourself as:

$ gem install sequel_secure_password

Usage

Plugin should be used in subclasses of Sequel::Model. Always call super in validate method of your model, otherwise password validations won't be executed. It does not set_allowed_columns and mass assignment policy must be managed separately.

Example model:

class User < Sequel::Model
  plugin :secure_password
end

# cost option can be used to change computational complexity of BCrypt
class HighCostUser < Sequel::Model
  plugin :secure_password, cost: 12
end

# include_validations option can be used to disable default password
# presence and confirmation
class UserWithoutValidations < Sequel::Model
  plugin :secure_password, include_validations: false
end

# digest_column option can be used to use an alternate database column.
# the default column is "password_digest"
class UserWithAlternateDigestColumn < Sequel::Model
  plugin :secure_password, digest_column: :password_hash
end

user = User.new
user.password = "foo"
user.password_confirmation = "bar"
user.valid? # => false

user.password_confirmation = "foo"
user.valid? # => true

user.authenticate("foo") # => user
user.authenticate("bar") # => nil

Contributing

1. Open an issue
2. Discuss proposed change
3. Once we both agree on the change I'll implement it or if you want it really badly, fork the project and create a pull request.

Acknowledgements

• Thanks to @send for implementing the :cost option;
• Thanks to @badosu for motivating me to add :include_validations option.
• Thanks to @AlexWayfer for fixing a bug that prevented inheriting from classes using the plugin.