How to do xml signing in ruby
digest, digital-signature, ruby, xml
Solution
If you're still interested I made this gem a week ago. It's still in development but the basic stuff is implemented. This gem is tested against signatures created with the xmlsec library. http://www.aleksey.com/xmlsec/
I'm actively working with this gem at the moment so bugs should be fixed relatively quick.
https://rubygems.org/gems/xmldsig
Problem
I need to sign xml using ruby, someone know any method or lib for that? My xml skeleton is: ``` <?xml version="1.0" encoding="ISO-8859-1"?> <Message> <MessageId> <ServiceId>service</ServiceId> <Version>1.0</Version> <MsgDesc>Service Description</MsgDesc> <Code>4</Code> <FromAddress>from</FromAddress> <ToAddress>to</ToAddress> <Date>2012-10-29</Date> </MessageId> <MessageBody/> <Signature xmlns="http://www.w3.org/2000/09/xmldsig#"> <SignedInfo> <CanonicalizationMethod Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/> <SignatureMethod Algorithm="http://www.w3.org/2000/09/xmldsig#rsa-sha1"/> <Reference URI=""> <Transforms> <Transform Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-signature"/> </Transforms> <DigestMethod Algorithm="http://www.w3.org/2000/09/xmldsig#sha1"/> <DigestValue>??????</DigestValue> </Reference> </SignedInfo> <SignatureValue>????????????</SignatureValue> <KeyInfo> <X509Data> <X509Certificate>????????</X509Certificate> </X509Data> </KeyInfo> </Signature> </message> ``` I tried this code for DigestValue and I have tested it, comparing it with my java example, but DigestValue is not matching with the response of my java example: ``` require 'base64' require 'openssl' to_sign_xml = File.read 'service.xml' digest = OpenSSL::Digest::SHA1.digest(to_sign_xml) digest = Base64.encode64(digest.to_s).gsub(/\n/, '') raise digest.inspect ``` My file service.xml contain that: ``` <Message> <MessageId> <ServiceId>service</ServiceId> <Version>1.0</Version> <MsgDesc>Service Description</MsgDesc> <Code>4</Code> <FromAddress>from</FromAddress> <ToAddress>to</ToAddress> <Date>2012-10-29</Date> </MessageId> <MessageBody/> <Message> ```