(Swift) Encrypt using Cert to produce -----BEGIN PKCS7----- ... -----END PKCS7-----

Demonstrates how to encrypt using a certificate to produce output such as:

-----BEGIN PKCS7-----
MIIHPwYJKoZIhvcNAQcEoIIHMDCCBywC ...
...
...
-----END PKCS7-----

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

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

    let crypt = CkoCrypt2()

    //  Specify the encryption to be used.
    //  "pki" indicates "Public Key Infrastructure" and will create a PKCS7 encrypted (enveloped) message.
    crypt.CryptAlgorithm = "pki"
    crypt.Pkcs7CryptAlg = "aes"
    crypt.KeyLength = 128
    crypt.OaepHash = "sha256"
    crypt.OaepPadding = true

    //  A certificate is needed as the encryption key..
    let cert = CkoCert()
    var success: Bool = cert.LoadFromFile("qa_data/certs/testCert.pem")
    if success != true {
        print("\(cert.LastErrorText)")
        return
    }

    //  Tell the crypt object to use the certificate.
    crypt.SetEncryptCert(cert)

    var toBeEncrypted: String? = "This string is to be encrypted."

    //  Get the result in multi-line BASE64 MIME format.
    crypt.EncodingMode = "base64_mime"

    var encryptedStr: String? = crypt.EncryptStringENC(toBeEncrypted)
    if success != true {
        print("\(crypt.LastErrorText)")
        return
    }

    //  Make a "-----BEGIN PKCS7-----" ... "-----END PKCS7-----" sandwich...
    let sb = CkoStringBuilder()
    sb.AppendLine("-----BEGIN PKCS7-----", crlf: true)
    sb.Append(encryptedStr)
    sb.AppendLine("-----END PKCS7-----", crlf: true)

    var outStr: String? = sb.GetAsString()

    print("\(outStr!)")

    //  Sample output:

    //  -----BEGIN PKCS7-----
    //  MIICYQYJKoZIhvcNAQcDoIICUjCCAk4CAQAxggH5MIIB9QIBADCBsTCBmzELMAkGA1UEBhMCR0Ix
    //  GzAZBgNVBAgTEkdyZWF0ZXIgTWFuY2hlc3RlcjEQMA4GA1UEBxMHU2FsZm9yZDEaMBgGA1UEChMR
    //  Q09NT0RPIENBIExpbWl0ZWQxQTA/BgNVBAMTOENPTU9ETyBTSEEtMjU2IENsaWVudCBBdXRoZW50
    //  aWNhdGlvbiBhbmQgU2VjdXJlIEVtYWlsIENBAhEAuBl4qE2MODB05C5h53M5UDA4BgkqhkiG9w0B
    //  AQcwK6APMA0GCWCGSAFlAwQCAQUAoRgwFgYJKoZIhvcNAQEIMAkGBSsOAwIaBQAEggEAyZejlE37
    //  awl0bCWVbOCqf9yLSN17mZRamG8FHDh3nNu11G0+oyJtsPDEnSKsQig0V67MZ+hcWV+uf4ytcjyx
    //  H0gs5uex+LwkB+c3ZTOt18IYWFtRilg1HFy1ZN3t0D2QbxYy+i1TXOOwp3gAHL45vRCJ0FbKyQ36
    //  pKl0XLe+lRvp2EiJCKVjxtX8VcZOKT4xkG7yOARaCQceth6pA58Dg0yzAz7w4nD2UgAlNzrXG69X
    //  e+7e7yfBv47RRqFiQqDpCn+fM/PmFbUyqBppMwc64yP+fJek8VyJw2/UaXWWM4iSKSflk90tiHwf
    //  loEU3It4arnSv94fZQo0v129aBqpWzBMBgkqhkiG9w0BBwEwHQYJYIZIAWUDBAECBBCohUgm5qX+
    //  TE6PxtPCmWi8gCBgbNg39emAB+AqLozm+vSLjZOGfg3M52gccKUJ8tg8XQ==
    //  -----END PKCS7-----

}