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(Lianja) Create CMS (PKCS7) Detached MIME SignatureDemonstrates how to add a CMS detached signature to MIME.
// This example assumes the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. loMime = createobject("CkMime") // Load a certificate w/ private key for signing. loCert = createobject("CkCert") llSuccess = loCert.LoadPfxFile("qa_data/pfx/ecc256_12345.p12","12345") if (llSuccess <> .T.) then ? loCert.LastErrorText release loMime release loCert return endif ? "Cert: " + loCert.SubjectDN // Create a simple MIME message to be signed: loMime.AddHeaderField("Subject","This is a test") loMime.AddHeaderField("MyCustomHeader","abc123") loMime.ContentType = "text/plain" loMime.SetBody("This is a plain-text body.") // Examine the MIME prior to signing: ? "--- MIME prior to signing ---" ? loMime.GetMime() // The MIME prior to signing looks like this: // Subject: This is a test // MyCustomHeader: abc123 // Content-Type: text/plain; format=flowed // // This is a plain-text body. // Use SHA256 as the hash algorithm in the CMS signature. loMime.SigningHashAlg = "SHA256" // Add a detached signature: llSuccess = loMime.AddDetachedSignature(loCert) if (llSuccess = .F.) then ? loMime.LastErrorText release loMime release loCert return endif // Examine the MIME with detached signature: ? "--- MIME with detached signature ---" ? loMime.GetMime() // Content-Type: multipart/signed; boundary="----=_NextPart_6e3_c655_9641494d.b4f00501"; // protocol="application/x-pkcs7-signature"; // micalg=sha256 // // ------=_NextPart_6e3_c655_9641494d.b4f00501 // Subject: This is a test // MyCustomHeader: abc123 // Content-Type: text/plain; format=flowed // // This is a plain-text body. // ------=_NextPart_6e3_c655_9641494d.b4f00501 // Content-Transfer-Encoding: base64 // Content-Type: application/x-pkcs7-signature; name="smime.p7s" // Content-Disposition: attachment; filename="smime.p7s" // // MIID7AYJKoZIhvcNAQcCoIID3TCCA9kCAQExDzANBglghkgBZQMEAgEFADALBgkqhkiG9w0BBwGg // ggJxMIICbTCCAhOgAwIBAgIJAJuS2kgOoyr+MAkGByqGSM49BAEwWzELMAkGA1UEBhMCQVUxEzAR // BgNVBAgTClNvbWUtU3RhdGUxITAfBgNVBAoTGEludGVybmV0IFdpZGdpdHMgUHR5IEx0ZDEUMBIG // A1UEAxMLZWNjMjU2LXRlc3QwHhcNMTYwODIzMTU0OTM5WhcNNDQwMTA4MTU0OTM5WjBbMQswCQYD // VQQGEwJBVTETMBEGA1UECBMKU29tZS1TdGF0ZTEhMB8GA1UEChMYSW50ZXJuZXQgV2lkZ2l0cyBQ // dHkgTHRkMRQwEgYDVQQDEwtlY2MyNTYtdGVzdDBZMBMGByqGSM49AgEGCCqGSM49AwEHA0IABARy // Hd86A7+qQ4DlIfKynZaFGdGLpkU3GlQwqaVD6GIJg3QIDhaWEksYtZ9OWjNHn9a6+i/P9o5/NrdI // SP0VWDWjgcAwgb0wHQYDVR0OBBYEFGmd2DfK4c3VBTVn8ebKH2BTmRicMIGNBgNVHSMEgYUwgYKA // FGmd2DfK4c3VBTVn8ebKH2BTmRicoV+kXTBbMQswCQYDVQQGEwJBVTETMBEGA1UECBMKU29tZS1T // dGF0ZTEhMB8GA1UEChMYSW50ZXJuZXQgV2lkZ2l0cyBQdHkgTHRkMRQwEgYDVQQDEwtlY2MyNTYt // dGVzdIIJAJuS2kgOoyr+MAwGA1UdEwQFMAMBAf8wCQYHKoZIzj0EAQNJADBGAiEAhuiwGy0lZKtK // LA13Ffc8AMTK7NsePPSfs0clXlZUR78CIQDXsJXpYsJ7tlTeockrK+6099sG/gGFTRPiQYU8juyf // LzGCAT8wggE7AgEBMGgwWzELMAkGA1UEBhMCQVUxEzARBgNVBAgTClNvbWUtU3RhdGUxITAfBgNV // BAoTGEludGVybmV0IFdpZGdpdHMgUHR5IEx0ZDEUMBIGA1UEAxMLZWNjMjU2LXRlc3QCCQCbktpI // DqMq/jANBglghkgBZQMEAgEFAKBpMBgGCSqGSIb3DQEJAzELBgkqhkiG9w0BBwEwHAYJKoZIhvcN // AQkFMQ8XDTIyMDUwODE0MzM1NFowLwYJKoZIhvcNAQkEMSIEIMvNpYuymLvF68aFFe+l3NEQTdkB // 7T8U6/j+Y5FgDlIUMAoGCCqGSM49BAMCBEYwRAIgQ6migEn3Le9ciIVUP/qc2JZAJZWjpulJXY9Q // IZJ3XK0CIGZwpLOgiv7ES8958hqT9a/q7aPc1xmkaZHtsat/k+Ki // // ------=_NextPart_6e3_c655_9641494d.b4f00501-- release loMime release loCert |
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