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(Ruby) IMAP Download and Verify Signed (S/MIME) EmailDemonstrates how to download and verify digitally signed S/MIME email. Note: This example requires Chilkat v11.0.0 or greater.
require 'chilkat' success = false # This example requires the Chilkat API to have been previously unlocked. # See Global Unlock Sample for sample code. imap = Chilkat::CkImap.new() # Connect to an IMAP server. # Use TLS imap.put_Ssl(true) imap.put_Port(993) success = imap.Connect("imap.example.com") if (success == false) print imap.lastErrorText() + "\n"; exit end success = imap.Login("myLogin","myPassword") if (success == false) print imap.lastErrorText() + "\n"; exit end # Select an IMAP mailbox success = imap.SelectMailbox("Inbox") if (success == false) print imap.lastErrorText() + "\n"; exit end # We can choose to fetch UIDs or sequence numbers. fetchUids = true # Get the message IDs of all the emails in the mailbox messageSet = Chilkat::CkMessageSet.new() success = imap.QueryMbx("ALL",fetchUids,messageSet) if (success == false) print imap.lastErrorText() + "\n"; exit end email = Chilkat::CkEmail.new() cert = Chilkat::CkCert.new() i = 0 while i < messageSet.get_Count() uid = messageSet.GetId(i) print "uid: " + uid + "\n"; success = imap.FetchEmail(false,uid,true,email) if (success == false) print imap.lastErrorText() + "\n"; exit end # The security layers of signed and/or encrypted emails # are automatically "unwrapped" when loaded into # a Chilkat email object. # An application only needs to check to see if an email # was received signed or encrypted, and then examine # the success/failure. For example: if (email.get_ReceivedSigned() == true) print "This email was signed." + "\n"; # Check to see if the signatures were verified. if (email.get_SignaturesValid() == true) print "Digital signature(s) verified." + "\n"; print "Signer: " + email.signedBy() + "\n"; # Get the certificate used for signing. success = email.LastSignerCert(0,cert) if (success == false) print "Failed to get signing certificate object." + "\n"; else print "Signing cert: " + cert.subjectCN() + "\n"; end else print "Digital signature verification failed." + "\n"; end end i = i + 1 end # Disconnect from the IMAP server. success = imap.Disconnect() |
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