Swift

Add a PFX Source to MailMan for Decryption

Demonstrates the Chilkat MailMan.AddPfxSourceFile method, which adds a PFX/PKCS#12 file to the MailMan object's internal list of sources used for locating certificates and private keys — for example, to decrypt S/MIME email downloaded from the server. The second argument is the PFX password. This example configures a POP3 connection and registers a PFX source.

Background: When MailMan downloads an encrypted (S/MIME) message, it needs the recipient's private key to decrypt it. On Windows and macOS the OS certificate stores are searched automatically, but when the key lives in a standalone PFX file — common on Linux or in server deployments — AddPfxSourceFile tells MailMan where to find it. A PFX bundles the certificate and its private key in one password-protected file.

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Swift


func chilkatTest() {
    var success: Bool = false

    //  Demonstrates the MailMan.AddPfxSourceFile method, which adds a PFX/PKCS#12 file to the
    //  MailMan object's internal list of sources used for locating certificates and private
    //  keys (for example, to decrypt downloaded S/MIME email).  The 2nd argument is the PFX
    //  password.

    let mailman = CkoMailMan()!

    //  Configure the POP3 server connection.
    mailman.mailHost = "pop.example.com"
    mailman.mailPort = 995
    mailman.popSsl = true
    mailman.popUsername = "user@example.com"
    mailman.popPassword = "myPassword"

    //  Provide a PFX so that encrypted emails downloaded from the server can be decrypted.

    success = mailman.addPfxSourceFile(pfxFilePath: "qa_data/certs/decryption.pfx", password: "pfx_password")
    if success == false {
        print("\(mailman.lastErrorText!)")
        return
    }

    print("Added the PFX certificate/private-key source.")

    //  Note: The path "qa_data/certs/decryption.pfx" is a relative local filesystem path,
    //  relative to the current working directory of the running application.

}