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Pete Matsyburka
28 lines
538 B
Ruby
28 lines
538 B
Ruby
# frozen_string_literal: true
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module EmailVerificationCodes
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DRIFT_BEHIND = 5.minutes
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module_function
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def generate(value)
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totp = ROTP::TOTP.new(build_totp_secret(value))
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totp.at(Time.current)
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end
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def verify(code, value)
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totp = ROTP::TOTP.new(build_totp_secret(value))
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totp.verify(code, drift_behind: DRIFT_BEHIND)
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end
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def build_totp_secret(value)
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ROTP::Base32.encode(
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Digest::SHA1.digest(
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[Rails.application.secret_key_base, 'form_email_2fa', value].join(':')
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)
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)
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end
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end
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