(Lianja) PKCS7 Encrypt MIME

Encrypt MIME using a digital certificate to create PKCS7 encrypted S/MIME.

Chilkat Lianja Extension Download Chilkat Lianja Extension

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

loMime = createobject("CkMime")

// Build a simple MIME message to be encrypted:
llSuccess = loMime.AddHeaderField("Content-Type","text/plain")
llSuccess = loMime.AddHeaderField("abc","123")
loMime.SetBody("This is a test")

// A digital certificate is required to create PKCS7 encrypted MIME.
// It can come from a variety of sources: .cer file, .pfx file, PEM files,
// an in-memory representation, or directly from a Windows
// registry-based certificate store.

// This example will load a certificate object from a .cer file.
// Note: Only the public-key is required to encrypt.  (Decryption
// requires a private key.)

loCert = createobject("CkCert")
llSuccess = loCert.LoadFromFile("myCert.cer")
if (llSuccess = .F.) then
    ? loCert.LastErrorText
    release loMime
    release loCert
    return
endif

// Encrypt the MIME:
llSuccess = loMime.Encrypt(loCert)
if (llSuccess = .F.) then
    ? loMime.LastErrorText
    release loMime
    release loCert
    return
endif

// Display the MIME:
? loMime.GetMime()

// The resulting S/MIME looks something like this:

// abc: 123
// Content-Disposition: attachment; filename="smime.p7m"
// Content-Transfer-Encoding: base64
// Content-Type: application/x-pkcs7-mime;
//  name="smime.p7m"
// 
// MIICAQYJKoZIhvcNAQcDoIIB8jCCAe4CAQAxggGFMIIBgQIBADBpMFUxCzAJBgNVBAYTAlpBMSUw
// IwYDVQQKExxUaGF3dGUgQ29uc3VsdGluZyAoUHR5KSBMdGQuMR8wHQYDVQQDExZUaGF3dGUgQ29k
// ZSBTaWduaW5nIENBAhB4ouTcAmLszrGi170k1deSMA0GCSqGSIb3DQEBAQUABIIBABz59iwVufLZ
// QIPs0whUYMtBjIQxg5IOCxpoKJeJmLVzu9Q5Q1poxG9uYOveybS9c4wbl5A0DFfKTW5O4HhHcOHW
// TgcH4iqdwhiFWm/q9d5rjceJWBFQsGOcgoXSU/U2Xp+N47/+Pqyc5XJbxKnOc4YhPzO320JZsNB6
// p1NGk5SNnWqgbUDmEnfH8ZPHSV7dNi2aiFALYTyLjyp0lqJCsdZ524OPTZFfusrl/9ibPAW7jKuI
// FgDCcBtRJvolVF8iIHxaTw4rhk0qb1KWzxvB5j9HSLdyIKIPhZbxeS10bx18YkSsBlKfdKRalQag
// 3oWSRdsK9/N75YHG8Pm+x9BOHUAwYAYJKoZIhvcNAQcBMBkGCCqGSIb3DQMCMA0CAToECAb+toBW
// txZigDhGZKSpUpuTiWvvSMemX/c79sSnMpuefVwGKFTDgXVLE2SoD5a9Yh5vcG7Mhl2IkilVwOMc
// fi23+g==


release loMime
release loCert