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(Unicode C) POP3 Read S/MIME Encrypted EmailRead S/MIME encrypted email.
#include <C_CkMailManW.h> #include <C_CkEmailBundleW.h> #include <C_CkEmailW.h> void ChilkatSample(void) { HCkMailManW mailman; BOOL success; HCkEmailBundleW bundle; int i; HCkEmailW email; // This example assumes the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. // The mailman object is used for receiving (POP3) // and sending (SMTP) email. mailman = CkMailManW_Create(); // Set the POP3 server's hostname CkMailManW_putMailHost(mailman,L"pop.someMailServer.com"); // Set the POP3 login/password. CkMailManW_putPopUsername(mailman,L"myLogin"); CkMailManW_putPopPassword(mailman,L"myPassword"); // If running on Microsoft Windows, the Chilkat mailman // will automatically search the registry-based certificate stores // for matching certificates and private keys required for // decryption. However, on Linux, MAX OS X, and other // operating systems, no such thing exists. Therefore, you'll // need to specify one or more PFX (.p12 / .pfx) files as // sources for locating the certs required for decyrption. success = CkMailManW_AddPfxSourceFile(mailman,L"/pfxFiles/certs_and_keys_1.pfx",L"pfxPassword1"); if (success != TRUE) { wprintf(L"%s\n",CkMailManW_lastErrorText(mailman)); CkMailManW_Dispose(mailman); return; } success = CkMailManW_AddPfxSourceFile(mailman,L"/pfxFiles/certs_and_keys_2.pfx",L"pfxPassword2"); if (success != TRUE) { wprintf(L"%s\n",CkMailManW_lastErrorText(mailman)); CkMailManW_Dispose(mailman); return; } // ... // Note: On MS Windows, it is not required to provide PFX sources // if the needed certs and private keys are already installed // on the system (in the registry-based certificate stores). // Copy the all email from the user's POP3 mailbox // into a bundle object. The email remains on the server. bundle = CkMailManW_CopyMail(mailman); if (CkMailManW_getLastMethodSuccess(mailman) == FALSE) { wprintf(L"%s\n",CkMailManW_lastErrorText(mailman)); CkMailManW_Dispose(mailman); return; } // S/MIME security envelopes are automatically "unwrapped" // when a message is retrieved from the server. Signed emails are automatically verified, and // encrypted emails are automatically decrypted, restoring the email to the original state before // signing and/or encrypting. Information about the signing and encrypting certificates can be // retrieved from the Email object (methods: GetSignedByCert, GetEncryptedByCert; // properties: SignedBy, EncryptedBy, SignaturesValid, Decrypted, ReceivedSigned, // ReceivedEncrypted). // Loop over the bundle, i = 0; while (i < CkEmailBundleW_getMessageCount(bundle)) { email = CkEmailBundleW_GetEmail(bundle,i); wprintf(L"%s\n",CkEmailW_ck_from(email)); wprintf(L"%s\n",CkEmailW_subject(email)); // At this point, if the email was signed and/or encrypted, it is already "unwrapped", i.e. // the email is already decrypted and in a state as if it were never signed or encrypted. // You may check to see if the email was received encrypted or signed, and if so, // whether it was successfully unwrapped and who signed or encrypted it: if (CkEmailW_getReceivedEncrypted(email) == TRUE) { wprintf(L"This email was encrypted when received.\n"); if (CkEmailW_getDecrypted(email) == TRUE) { wprintf(L"This email was successfully decrypted. It was encrypted by:\n"); wprintf(L"%s\n",CkEmailW_encryptedBy(email)); } else { wprintf(L"This email was not decrypted.\n"); } } if (CkEmailW_getReceivedSigned(email) == TRUE) { wprintf(L"This email was signed when received.\n"); if (CkEmailW_getSignaturesValid(email) == TRUE) { wprintf(L"The signature was verified. It was signed by:\n"); wprintf(L"%s\n",CkEmailW_signedBy(email)); } else { wprintf(L"The signature verification failed.\n"); } } // The email's body, HTML body, attachments, etc. // are decrypted and available just like any non-encrypted email. wprintf(L"--\n"); CkEmailW_Dispose(email); i = i + 1; } CkEmailBundleW_Dispose(bundle); CkMailManW_Dispose(mailman); } |
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