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(Swift) POP3 Read S/MIME Encrypted EmailRead S/MIME encrypted email. Note: This example requires Chilkat v11.0.0 or greater.
func chilkatTest() { var success: Bool = false // 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. let mailman = CkoMailMan()! // Set the POP3 server's hostname mailman.mailHost = "pop.someMailServer.com" // Set the POP3 login/password. mailman.popUsername = "myLogin" mailman.popPassword = "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 = mailman.addPfxSourceFile("/pfxFiles/certs_and_keys_1.pfx", password: "pfxPassword1") if success == false { print("\(mailman.lastErrorText!)") return } success = mailman.addPfxSourceFile("/pfxFiles/certs_and_keys_2.pfx", password: "pfxPassword2") if success == false { print("\(mailman.lastErrorText!)") 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. let bundle = CkoEmailBundle()! var keepOnServer: Bool = true var headersOnly: Bool = false // Irrelevent because we are NOT downloading headers-only var numBodyLines: Int = 0 success = mailman.fetchAll(keepOnServer, headersOnly: headersOnly, numBodyLines: numBodyLines, bundle: bundle) if success == false { print("\(mailman.lastErrorText!)") 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 let email = CkoEmail()! var i: Int = 0 while i < bundle.messageCount.intValue { bundle.email(at: i, email: email) print("\(email.from!)") print("\(email.subject!)") // 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 email.receivedEncrypted == true { print("This email was encrypted when received.") if email.decrypted == true { print("This email was successfully decrypted. It was encrypted by:") print("\(email.encryptedBy!)") } else { print("This email was not decrypted.") } } if email.receivedSigned == true { print("This email was signed when received.") if email.signaturesValid == true { print("The signature was verified. It was signed by:") print("\(email.signedBy!)") } else { print("The signature verification failed.") } } // The email's body, HTML body, attachments, etc. // are decrypted and available just like any non-encrypted email. print("--") i = i + 1 } } |
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