(Swift 3,4,5...) Decrypt2

Demonstrates how to decrypt MIME using a certificate and private key where the certificate and its corresponding private key are stored in separate files -- a .cer for the certificate, and a .pem for the private key.

Chilkat Downloads for the Swift Programming Language MAC OS X (Cocoa) Objective-C/Swift Libs iOS Objective-C/Swift Libs

func chilkatTest() {
    // This example assumes the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    let mime = CkoMime()!

    // Load the certificate from a .cer file.
    let cert = CkoCert()!
    var success: Bool = cert.load(fromFile: "aaworkarea/myCert.cer")
    if success == false {
        print("\(cert.lastErrorText!)")
        return
    }

    // Load the private key from an encrypted PEM file.
    // (A private key can be loaded from other file formats also..)
    let privKey = CkoPrivateKey()!
    success = privKey.loadEncryptedPemFile("aaworkarea/myPrivateKey.pem", password: "myPassword")
    if success == false {
        print("\(privKey.lastErrorText!)")
        return
    }

    success = mime.loadFile("aaworkarea/encryptedMime.txt")
    if success == false {
        print("\(mime.lastErrorText!)")
        return
    }

    // Decrypt using the cert and associated private key
    success = mime.decrypt2(cert, privateKey: privKey)
    if success == false {
        print("\(mime.lastErrorText!)")
        return
    }

    // Save the S/MIME to a file.
    success = mime.save("aaworkarea/decryptedMime.txt")
    if success == false {
        print("\(mime.lastErrorText!)")
        return
    }

    print("success!")

}