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(Unicode 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.
#include <CkMailManW.h> #include <CkStringTableW.h> #include <CkEmailW.h> #include <CkCertW.h> void ChilkatSample(void) { bool success = false; // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. CkMailManW mailman; // Set the POP3 server's hostname mailman.put_MailHost(L"pop.example.com"); // Set the POP3 login/password. mailman.put_PopUsername(L"myLogin"); mailman.put_PopPassword(L"myPassword"); CkStringTableW stUidls; success = mailman.FetchUidls(stUidls); if (success == false) { wprintf(L"%s\n",mailman.lastErrorText()); return; } CkEmailW email; CkCertW cert; int count = stUidls.get_Count(); int i = 0; while (i < count) { // Download the full email. success = mailman.FetchByUidl(stUidls.stringAt(i),false,0,email); if (success == false) { wprintf(L"%s\n",mailman.lastErrorText()); return; } wprintf(L"%d\n",i); wprintf(L"From: %s\n",email.ck_from()); wprintf(L"Subject: %s\n",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.get_ReceivedSigned() == true) { wprintf(L"This email was signed.\n"); // Check to see if the signatures were verified. if (email.get_SignaturesValid() == true) { wprintf(L"Digital signature(s) verified.\n"); wprintf(L"Signer: %s\n",email.signedBy()); success = email.LastSignerCert(0,cert); if (success == false) { wprintf(L"%s\n",email.lastErrorText()); return; } wprintf(L"Signing cert: %s\n",cert.subjectCN()); } } else { wprintf(L"Digital signature verification failed.\n"); } i = i + 1; } mailman.Pop3EndSession(); } |
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