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(Go) 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.
success := false // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. mailman := MailMan_Ref.html">chilkat.NewMailMan() // Set the POP3 server's hostname mailman.SetMailHost("pop.example.com") // Set the POP3 login/password. mailman.SetPopUsername("myLogin") mailman.SetPopPassword("myPassword") stUidls := StringTable_Ref.html">chilkat.NewStringTable() success = mailman.FetchUidls(stUidls) if success == false { fmt.Println(mailman.LastErrorText()) mailman.DisposeMailMan() stUidls.DisposeStringTable() return } email := Email_Ref.html">chilkat.NewEmail() cert := Cert_Ref.html">chilkat.NewCert() count := stUidls.Count() i := 0 for i < count { // Download the full email. success = mailman.FetchByUidl(*stUidls.StringAt(i),false,0,email) if success == false { fmt.Println(mailman.LastErrorText()) mailman.DisposeMailMan() stUidls.DisposeStringTable() email.DisposeEmail() cert.DisposeCert() return } fmt.Println(i) fmt.Println("From: ", email.From()) fmt.Println("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 { fmt.Println("This email was signed.") // Check to see if the signatures were verified. if email.SignaturesValid() == true { fmt.Println("Digital signature(s) verified.") fmt.Println("Signer: ", email.SignedBy()) success = email.LastSignerCert(0,cert) if success == false { fmt.Println(email.LastErrorText()) mailman.DisposeMailMan() stUidls.DisposeStringTable() email.DisposeEmail() cert.DisposeCert() return } fmt.Println("Signing cert: ", cert.SubjectCN()) } } else { fmt.Println("Digital signature verification failed.") } i = i + 1 } mailman.Pop3EndSession() mailman.DisposeMailMan() stUidls.DisposeStringTable() email.DisposeEmail() cert.DisposeCert() |
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