Contents

require 'secretsharing'

module VaultTree
  module Crypto
    class GeneratedShamirKey

      def initialize(params)
        @outstanding_shares = params[:outstanding_shares]
        @recovery_threshold = params[:recovery_threshold]
      end

      # String representation of the newly generated sharmir key
      #
      # @return [String] Secure Hash digest of the generated secret integer
      def key
        create_secret
        LockSmith.new(message: secret_string).secure_hash
      end

      # Shares associated with the newly generated Sharmir key
      #
      # @return [Array] Array of strings
      def shares
        create_secret
        shares_array.map{|s| s.to_s}
      end

      # Fixnum representation if string value given
      #
      # @return [FixNum]
      def outstanding_shares
        @outstanding_shares.to_i
      end

      # Fixnum representation if string value given
      #
      # @return [FixNum]
      def recovery_threshold
        @recovery_threshold.to_i
      end

      private

      def secret_string
        shamir_object.secret.to_s
      end

      def shares_array
        shamir_object.shares
      end

      def shamir_object
        @shamir_object ||= SecretSharing::Shamir.new(outstanding_shares, recovery_threshold)
      end

      def create_secret
        shamir_object.create_random_secret unless secret_set?
      end

      def secret_set?
        shamir_object.secret_set?
      end
    end
  end
end

Version data entries

2 entries across 2 versions & 1 rubygems

Version	Path
vault-tree-0.3.4	lib/vault-tree/lock_smith/generated_shamir_key.rb
vault-tree-0.3.3	lib/vault-tree/lock_smith/generated_shamir_key.rb