47 lines
1.3 KiB
Ruby
47 lines
1.3 KiB
Ruby
module Encryptable
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def signable_string
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""
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end
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def verify_creator_signature
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verify_signature(creator_signature, person)
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end
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def verify_signature(signature, person)
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if person.nil?
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Rails.logger.info("Verifying sig on #{signable_string} but no person is here")
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return false
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elsif person.key.nil?
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Rails.logger.info("Verifying sig on #{signable_string} but #{person.real_name} has no key")
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return false
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elsif signature.nil?
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Rails.logger.info("Verifying sig on #{signable_string} but #{person.real_name} did not sign")
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return false
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end
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Rails.logger.info("Verifying sig on #{signable_string} from person #{person.real_name}")
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verify_signature_from_key(signature, person.key)
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end
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def verify_signature_from_key signature, key
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validity = key.verify "SHA", Base64.decode64(signature), signable_string
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Rails.logger.info("Validity: #{validity}")
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validity
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end
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protected
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def sign_if_mine
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if self.person == User.owner
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self.creator_signature = sign
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end
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end
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def sign
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sign_with_key(User.owner.key)
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end
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def sign_with_key(key)
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Rails.logger.info("Signing #{signable_string}")
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Base64.encode64(key.sign "SHA", signable_string)
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end
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end
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