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# frozen_string_literal: true
module ActiveRecord
module Encryption
# A key is a container for a given +secret+
#
# Optionally, it can include +public_tags+. These tags are meant to be stored
# in clean (public) and can be used, for example, to include information that
# references the key for a future retrieval operation.
class Key
attr_reader :secret, :public_tags
def initialize(secret)
@secret = secret
@public_tags = Properties.new
end
def self.derive_from(password)
secret = ActiveRecord::Encryption.key_generator.derive_key_from(password)
ActiveRecord::Encryption::Key.new(secret)
end
def id
Digest::SHA1.hexdigest(secret).first(4)
end
end
end
end
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