39 lines
890 B
Ruby
39 lines
890 B
Ruby
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class SignatureService
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CONFIG_PATH = Rails.root.join("config", "signing_key.yml")
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class << self
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def generate
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RbNaCl::Util.bin2hex(RbNaCl::SigningKey.generate)
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end
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def verify(signature, message)
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message = Base64.urlsafe_encode64(message)
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begin
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signing_key.verify_key
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.verify(RbNaCl::Util.hex2bin(signature), message)
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rescue RbNaCl::BadSignatureError, RbNaCl::LengthError
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return false
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end
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end
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def sign(message)
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message = Base64.urlsafe_encode64(message)
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RbNaCl::Util.bin2hex(signing_key.sign(message))
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end
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private
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def signing_key
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@@signing_key ||= RbNaCl::SigningKey.new(RbNaCl::Util.hex2bin(config[:key]))
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end
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def config
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if File.exist?(CONFIG_PATH)
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YAML.safe_load(File.read(CONFIG_PATH)).symbolize_keys
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else
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{}
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end
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end
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end
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end
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