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(.NET Core C#) POP3 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.
bool success = false; // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. Chilkat.MailMan mailman = new Chilkat.MailMan(); // Set the POP3 server's hostname mailman.MailHost = "pop.example.com"; // Set the POP3 login/password. mailman.PopUsername = "myLogin"; mailman.PopPassword = "myPassword"; Chilkat.StringTable stUidls = new Chilkat.StringTable(); success = mailman.FetchUidls(stUidls); if (success == false) { Debug.WriteLine(mailman.LastErrorText); return; } Chilkat.Email email = new Chilkat.Email(); Chilkat.Cert cert = new Chilkat.Cert(); int count = stUidls.Count; int i = 0; while (i < count) { // Download the full email. success = mailman.FetchByUidl(stUidls.StringAt(i),false,0,email); if (success == false) { Debug.WriteLine(mailman.LastErrorText); return; } Debug.WriteLine(Convert.ToString(i)); Debug.WriteLine("From: " + email.From); Debug.WriteLine("Subject: " + email.Subject); // 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.ReceivedSigned == true) { Debug.WriteLine("This email was signed."); // Check to see if the signatures were verified. if (email.SignaturesValid == true) { Debug.WriteLine("Digital signature(s) verified."); Debug.WriteLine("Signer: " + email.SignedBy); success = email.LastSignerCert(0,cert); if (success == false) { Debug.WriteLine(email.LastErrorText); return; } Debug.WriteLine("Signing cert: " + cert.SubjectCN); } } else { Debug.WriteLine("Digital signature verification failed."); } i = i + 1; } mailman.Pop3EndSession(); |
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