29 lines
813 B
Ruby
29 lines
813 B
Ruby
# frozen_string_literal: true
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class Ed25519SignatureValidator < ActiveModel::EachValidator
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def validate_each(record, attribute, value)
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return if value.blank?
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verify_key = Ed25519::VerifyKey.new(Base64.decode64(option_to_value(record, :verify_key)))
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signature = Base64.decode64(value)
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message = option_to_value(record, :message)
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record.errors.add(attribute, I18n.t('crypto.errors.invalid_signature')) unless verified?(verify_key, signature, message)
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end
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private
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def verified?(verify_key, signature, message)
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verify_key.verify(signature, message)
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rescue Ed25519::VerifyError, ArgumentError
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false
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end
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def option_to_value(record, key)
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if options[key].is_a?(Proc)
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options[key].call(record)
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else
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record.public_send(options[key])
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end
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end
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end
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