(Lianja) Load .eml and Decrypt (smime.p7m)

Loads an encrypted email from a .eml file and decrypts using certificate w/ private key found in a .p12 (or .pfx) file.

The Content-Type and Content-Disposition email headers of the email to be decrypted look similar to this:

Content-Type: application/x-pkcs7-mime; smime-type=enveloped-data;
	name="smime.p7m"
Content-Disposition: attachment; filename="smime.p7m"

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loEmail = createobject("CkEmail")

// Add a PFX (or .p12) to be used for decryption
llSuccess = loEmail.AddPfxSourceFile("myCert.p12","passwordForP12")
if (llSuccess <> .T.) then
    ? loEmail.LastErrorText
    release loEmail
    return
endif

// Loading the .eml automatically decrypts.
llSuccess = loEmail.LoadEml("encrypted.eml")
if (llSuccess <> .T.) then
    ? loEmail.LastErrorText
    release loEmail
    return
endif

// The email now exists as it was prior to encryption.
// Your app may access the email's subject, body, attachments,
// etc. using the Chilkat Email API...

// Save the decrypted email:
llSuccess = loEmail.SaveEml("decrypted.eml")
if (llSuccess <> .T.) then
    ? loEmail.LastErrorText
    release loEmail
    return
endif

? "Success."


release loEmail