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41 lines
848 B
41 lines
848 B
# frozen_string_literal: true
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# == Schema Information
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#
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# Table name: system_keys
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#
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# id :bigint(8) not null, primary key
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# key :binary
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# created_at :datetime not null
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# updated_at :datetime not null
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#
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class SystemKey < ApplicationRecord
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ROTATION_PERIOD = 1.week.freeze
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before_validation :set_key
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scope :expired, ->(now = Time.now.utc) { where(arel_table[:created_at].lt(now - ROTATION_PERIOD * 3)) }
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class << self
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def current_key
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previous_key = order(id: :asc).last
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if previous_key && previous_key.created_at >= ROTATION_PERIOD.ago
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previous_key.key
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else
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create.key
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end
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end
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end
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private
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def set_key
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return if key.present?
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cipher = OpenSSL::Cipher.new('AES-256-GCM')
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cipher.encrypt
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self.key = cipher.random_key
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end
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end
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