53 lines
1.8 KiB
Ruby
53 lines
1.8 KiB
Ruby
# Copyright 2010 Diaspora Inc.
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#
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# This file is part of Diaspora.
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#
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# Diaspora is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# Diaspora is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with Diaspora. If not, see <http://www.gnu.org/licenses/>.
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#
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module Encryptable
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def signable_string
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raise NotImplementedException("Override this in your encryptable class")
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end
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def signature_valid?
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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.encryption_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.debug("Verifying sig on #{signable_string} from person #{person.real_name}")
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validity = person.encryption_key.verify "SHA", Base64.decode64(signature), signable_string
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Rails.logger.debug("Validity: #{validity}")
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validity
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end
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def sign_with_key(key)
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Rails.logger.debug("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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