forked from diaspora/diaspora
/
encryptable.rb
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/
encryptable.rb
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# Copyright (c) 2010, Diaspora Inc. This file is
# licensed under the Affero General Public License version 3. See
# the COPYRIGHT file.
module Encryptable
def signable_string
raise NotImplementedException("Override this in your encryptable class")
end
def signature_valid?
verify_signature(creator_signature, person)
end
def verify_signature(signature, person)
if person.nil?
Rails.logger.info("Verifying sig on #{signable_string} but no person is here")
return false
elsif person.encryption_key.nil?
Rails.logger.info("Verifying sig on #{signable_string} but #{person.real_name} has no key")
return false
elsif signature.nil?
Rails.logger.info("Verifying sig on #{signable_string} but #{person.real_name} did not sign")
return false
end
Rails.logger.debug("Verifying sig on #{signable_string} from person #{person.real_name}")
validity = person.encryption_key.verify "SHA", Base64.decode64(signature), signable_string
Rails.logger.debug("Validity: #{validity}")
validity
end
def sign_with_key(key)
Rails.logger.debug("Signing #{signable_string}")
Base64.encode64(key.sign "SHA", signable_string)
end
end