Java

Create PKCS7 Attached/Opaque Signature (S/MIME)

See more MIME Examples

Create an S/MIME message with a PKCS7 attached/opaque signature. Chilkat2 Java

import com.chilkatsoft.chilkat2.Cert;
import com.chilkatsoft.chilkat2.ChilkatException;
import com.chilkatsoft.chilkat2.Mime;

public class ChilkatExample {

    public static void main(String[] args) {
        // This example requires the Chilkat API to have been previously unlocked.
        // See Global Unlock Sample for sample code.

        Mime mime = new Mime();

        // Load a certificate w/ private key for signing.
        // There are many ways of getting a certificate object:
        // from a pfx file, from .cer and private-key files, from the
        // Windows registry-based certificate stores, etc.
        // Load a PFX file into a certificate object.
        Cert cert = new Cert();
        String pfxFilepath = "pfxFiles/something.pfx";
        String pfxPassword = "secret";
        try {
            cert.loadPfxFile(pfxFilepath, pfxPassword);
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        // Create a very simple MIME message to be signed:
        mime.addHeaderField("Subject", "This is a test");
        mime.addHeaderField("MyCustomHeader", "abc123");
        mime.setContentType("text/plain");
        mime.setBody("This is a plain-text body.");

        // Examine the MIME prior to signing:
        System.out.println("--- MIME prior to signing ---");
        System.out.println(mime.getMime());

        // The MIME prior to signing looks like this:
        // -------------------------------------------------------------------------------

        // Subject: This is a test
        // MyCustomHeader: abc123
        // Content-Type: text/plain
        //
        // This is a plain-text body.

        // -------------------------------------------------------------------------------

        // The default hash algorithm used in the signing process is "SHA1".
        // To change it, set the SigningHashAlg property:
        mime.setSigningHashAlg("SHA256");

        // Convert the MIME to PKCS7 signed-data.
        try {
            mime.convertToSigned(cert);
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        // Examine the signed MIME
        System.out.println("--- MIME converted to PKCS7 signed-data ---");
        System.out.println(mime.getMime());

        // The MIME after signing looks like this:
        // -------------------------------------------------------------------------------

        // Subject: This is a test
        // MyCustomHeader: abc123
        // Content-Disposition: attachment; filename="smime.p7m";
        // Content-Transfer-Encoding: base64
        // Content-Type: application/x-pkcs7-mime;
        //  name="smime.p7m"; smime-type="signed-data";
        //
        // MIIObAYJKoZIhvcNAQcCoIIOXTCCDlkCAQExDzANBglghkgBZQMEAgEFADB2BgkqhkiG9w0BBwGg
        // aQRnU3ViamVjdDogVGhpcyBpcyBhIHRlc3QNCk15Q3VzdG9tSGVhZGVyOiBhYmMxMjMNCkNvbnRl
        // bnQtVHlwZTogdGV4dC9wbGFpbg0KDQpUaGlzIGlzIGEgcGxhaW4tdGV4dCBib2R5LqCCCaAwggRm
        // MIIDTqADAgECAhBEvgyLUAAktBHTNi3gs18bMA0GCSqGSIb3DQEBBQUAMIGVMQswCQYDVQQGEwJV
        // UzELMAkGA1UECBMCVVQxFzAVBgNVBAcTDlNhbHQgTGFrZSBDaXR5MR4wHAYDVQQKExVUaGUgVVNF
        // UlRSVVNUIE5ldHdvcmsxITAfBgNVBAsTGGh0dHA6Ly93d3cudXNlcnRydXN0LmNvbTEdMBsGA1UE
        // AxMUVVROLVVTRVJGaXJzdC1PYmplY3QwHhcNOTkwNzA5MTgzMTIwWhcNMTkwNzA5MTg0MDM2WjCB
        // lTELMAkGA1UEBhMCVVMxCzAJBgNVBAgTAlVUMRcwFQYDVQQHEw5TYWx0IExha2UgQ2l0eTEeMBwG
        // A1UEChMVVGhlIFVTRVJUUlVTVCBOZXR3b3JrMSEwHwYDVQQLExhodHRwOi8vd3d3LnVzZXJ0cnVz
        // dC5jb20xHTAbBgNVBAMTFFVUTi1VU0VSRmlyc3QtT2JqZWN0MIIBIjANBgkqhkiG9w0BAQEFAAOC
        // AQ8AMIIBCgKCAQEAzqqBP6OjYXiqMQBVlRGeJw8fHN86m4JoMMBKYR3xLw76vnn3pSPvVVGWhM3b
        // 47luPjHYCiBnx/TZv5TrRwQ+As4qol2HBAn2MJ0Yipeyqhz8QdKhNsv7PZG659lwNfrk55DDm6Ob
        // 0zz1Epl3sbcJ4GjmHLjzlGOIamr+C3bJvvQi5Ge5qxped8GFB90NbL/uBsd3akGepw/X++6UF7f8
        // hb6kq8QcMd3XttHk8O/fFo+yUpPXodSJoQcuv+EBEkIeGuHYlTTbZHko/7ouEcLl6FuSSPtHC8Js
        // 2q0yg0HzpeVBcP1lkG36+lHE+b2WKxkELNNtp9zwf2+DZeJqq4eGdQIDAQABo4GvMIGsMAsGA1Ud
        // DwQEAwIBxjAPBgNVHRMBAf8EBTADAQH/MB0GA1UdDgQWBBTa7WR0FJwUPKvdmam9WyhNizzJ2DBC
        // BgNVHR8EOzA5MDegNaAzhjFodHRwOi8vY3JsLnVzZXJ0cnVzdC5jb20vVVROLVVTRVJGaXJzdC1P
        // YmplY3QuY3JsMCkGA1UdJQQiMCAGCCsGAQUFBwMDBggrBgEFBQcDCAYKKwYBBAGCNwoDBDANBgkq
        // hkiG9w0BAQUFAAOCAQEACB9SsTdEeNv9zrnalZaYqlVkgLVaQN0hpcXB818sTMhHWmnq6PA1NfTQ
        // JfPIpqSHSr0bsXMIvdTDyrY1u1mGdzHNp4AUrhPv/LFI+WslJS1RtixtRcGYyIpWXT7uQ04+ayeO
        // 0DpLhQtf0+1qp3XL0VqHLzl1E1pysAKBn77wD4RUIGJsadThTcYNmUMBDRKWjHidv1CisUSqas8X
        // es9vD9T4JFVf8DQWSWY+UEbJY3E4MWK4YrnzU61stSuiEqoZTwnaXueTxo4UCP7wMIAYoIaFTch9
        // 14sD/m7V950WrJIsoCPlnJFSH5TfF5Rzw7PBwXEFIAB4vRNSHag+zQAfyDCCBTIwggQaoAMCAQIC
        // EQDm/GiUo2tiCnVnsAEgJ0r7MA0GCSqGSIb3DQEBBQUAMIGVMQswCQYDVQQGEwJVUzELMAkGA1UE
        // CBMCVVQxFzAVBgNVBAcTDlNhbHQgTGFrZSBDaXR5MR4wHAYDVQQKExVUaGUgVVNFUlRSVVNUIE5l
        // dHdvcmsxITAfBgNVBAsTGGh0dHA6Ly93d3cudXNlcnRydXN0LmNvbTEdMBsGA1UEAxMUVVROLVVT
        // RVJGaXJzdC1PYmplY3QwHhcNMDkxMDEyMDAwMDAwWhcNMTAxMDEyMjM1OTU5WjCBoDELMAkGA1UE
        // BhMCVVMxDjAMBgNVBBEMBTYwMTg3MREwDwYDVQQIDAhJbGxpbm9pczEQMA4GA1UEBwwHV2hlYXRv
        // bjEaMBgGA1UECQwRMTcxOSBFIEZvcmVzdCBBdmUxHzAdBgNVBAoMFkNoaWxrYXQgU29mdHdhcmUs
        // IEluYy4xHzAdBgNVBAMMFkNoaWxrYXQgU29mdHdhcmUsIEluYy4wggEiMA0GCSqGSIb3DQEBAQUA
        // A4IBDwAwggEKAoIBAQC5ueUJPjI74J5Yavc3JUCWHEMMd2C9T+4VDuUcN7vzYuIOjsyV1yhzAl8+
        // uxzE+dhfcRK8qw9JbRV56Dzfyz5DqJH9x0rlbzkM24NeNZyM1kXIs2NHCJTYlYUqlVLZ2SXpiqru
        // nnYEFScZho3knWoBYC4841sdUay70pqluo2Y1CBbx5t+zYPXit370hEGzKLNK6XRTevcVQQMvL/f
        // d/gz241M8KBT8yvqTAjv6NJz9tHNUqhYO5mTT65nsIwKQ5/T8L+hsOHi4VM2QdVW6ZD9jrfPIfES
        // yOyfXCx2l9oEHfB3gwgdYQ4Mq9hRG77mIc9H+pw1V0yMmQmEVs0LP6hvAgMBAAGjggFuMIIBajAf
        // BgNVHSMEGDAWgBTa7WR0FJwUPKvdmam9WyhNizzJ2DAdBgNVHQ4EFgQUBMe/RfjpWAOjAMHml1qw
        // DvPa4OowDgYDVR0PAQH/BAQDAgeAMAwGA1UdEwEB/wQCMAAwEwYDVR0lBAwwCgYIKwYBBQUHAwMw
        // EQYJYIZIAYb4QgEBBAQDAgQQMEYGA1UdIAQ/MD0wOwYMKwYBBAGyMQECAQMCMCswKQYIKwYBBQUH
        // AgEWHWh0dHBzOi8vc2VjdXJlLmNvbW9kby5uZXQvQ1BTMEIGA1UdHwQ7MDkwN6A1oDOGMWh0dHA6
        // Ly9jcmwudXNlcnRydXN0LmNvbS9VVE4tVVNFUkZpcnN0LU9iamVjdC5jcmwwNAYIKwYBBQUHAQEE
        // KDAmMCQGCCsGAQUFBzABhhhodHRwOi8vb2NzcC5jb21vZG9jYS5jb20wIAYDVR0RBBkwF4EVYWRt
        // aW5AY2hpbGthdHNvZnQuY29tMA0GCSqGSIb3DQEBBQUAA4IBAQAP/2IpG75SHSFFqjHqvCXy0n0O
        // MTQk2IexnIUBlF7wm0oZquXBG2GlOPd9IXNr7k3wf4G+nZ6rgit6slVT1VxZS8RzqhGT3ZRTa2ud
        // dSqJyKxxrqdBJMY/WWaWVtCSU74AKAAm/ONwD1Zz39IZ2Mr8ApXn2LnZy4ZgI3hZnVR8I92/sppl
        // +NKWr0iMBpcz2KEwXZ5lrS5/4qRFlY+LQgRBFnjoM9WDW1lGEqeHFQQ/dqyrNiRAp+l7OzPBS4aM
        // nfxS+Yj/blpnuW41dVi9TJTXozRwiHzQ41FfrkJMD4JZULc539SK1EU1cYMl13x3JODHlng2IrjZ
        // pCKrFCsSCP2BMYIEJTCCBCECAQEwgaswgZUxCzAJBgNVBAYTAlVTMQswCQYDVQQIEwJVVDEXMBUG
        // A1UEBxMOU2FsdCBMYWtlIENpdHkxHjAcBgNVBAoTFVRoZSBVU0VSVFJVU1QgTmV0d29yazEhMB8G
        // A1UECxMYaHR0cDovL3d3dy51c2VydHJ1c3QuY29tMR0wGwYDVQQDExRVVE4tVVNFUkZpcnN0LU9i
        // amVjdAIRAOb8aJSja2IKdWewASAnSvswDQYJYIZIAWUDBAIBBQCgggJKMBgGCSqGSIb3DQEJAzEL
        // BgkqhkiG9w0BBwEwHAYJKoZIhvcNAQkFMQ8XDTEwMDYzMDE0NTg0MFowLwYJKoZIhvcNAQkEMSIE
        // ILEFXqrFbp/l0XOJyyjW1IJhjJxJaOhLUlZTc8VcabVMMF8GCSqGSIb3DQEJDzFSMFAwCwYJYIZI
        // AWUDBAECMAoGCCqGSIb3DQMHMA4GCCqGSIb3DQMCAgIAgDANBggqhkiG9w0DAgIBQDAHBgUrDgMC
        // BzANBggqhkiG9w0DAgIBKDCBvAYJKwYBBAGCNxAEMYGuMIGrMIGVMQswCQYDVQQGEwJVUzELMAkG
        // A1UECBMCVVQxFzAVBgNVBAcTDlNhbHQgTGFrZSBDaXR5MR4wHAYDVQQKExVUaGUgVVNFUlRSVVNU
        // IE5ldHdvcmsxITAfBgNVBAsTGGh0dHA6Ly93d3cudXNlcnRydXN0LmNvbTEdMBsGA1UEAxMUVVRO
        // LVVTRVJGaXJzdC1PYmplY3QCEQDm/GiUo2tiCnVnsAEgJ0r7MIG+BgsqhkiG9w0BCRACCzGBrqCB
        // qzCBlTELMAkGA1UEBhMCVVMxCzAJBgNVBAgTAlVUMRcwFQYDVQQHEw5TYWx0IExha2UgQ2l0eTEe
        // MBwGA1UEChMVVGhlIFVTRVJUUlVTVCBOZXR3b3JrMSEwHwYDVQQLExhodHRwOi8vd3d3LnVzZXJ0
        // cnVzdC5jb20xHTAbBgNVBAMTFFVUTi1VU0VSRmlyc3QtT2JqZWN0AhEA5vxolKNrYgp1Z7ABICdK
        // +zANBgkqhkiG9w0BAQEFAASCAQBfYh75saVFNXRPOzXOemaoVIFz+OHSsQB1fqXbV+hjGkxuvWAT
        // ldq32luVFFCz2gErWDT8eZ0yFVVwi16XyP7ptZeGU4cIGtrOozq78dziWwbNB021c3Dcw0vmH83m
        // FrU8ZNXYhL2+Lu4PlgvSCxHtC9EKrsP0s3WvBk3nMgXhu4Nmvkl1pCAofhAXWs545TfFB3jLEgeR
        // spbT6PhRR2lErXKF/Ga5NUyUqpw/Ba2YB3fFsbwiMyncmYicnUT2eYxxYBPtX9X6DQSKh3+iLNz0
        // sx89fluXIoqWONjR/XyN8zYd6WtEqMMwY6HQPAblFEuMPHZIhC0h/hfGAVisKLmh
        //

        // -------------------------------------------------------------------------------
    }
}