Xojo Plugin

Check if a MIME Tree Contains Encrypted Parts

Demonstrates the Chilkat Mime.ContainsEncryptedParts method, which returns whether the currently visible MIME tree contains a CMS/PKCS #7 encrypted entity. It takes no arguments.

Note: The file path is relative to the application's current working directory. Absolute paths may also be used. Supply the path to your own file.

Background: The tree-wide counterpart to IsEncrypted: it finds an encrypted entity nested anywhere in the message, not just at the top. This lets you detect partially-encrypted messages and decide which parts require decryption before processing.

Chilkat Xojo Plugin Downloads

Download Chilkat for Xojo Plugin

Xojo Plugin

Dim success As Boolean
success = False

//  Demonstrates the Mime.ContainsEncryptedParts method, which returns whether the MIME tree contains a CMS/PKCS #7 encrypted entity.  It takes no arguments.

Dim mime As New Chilkat.Mime
success = mime.LoadMimeFile("qa_data/message.eml")
If (success = False) Then
    System.DebugLog(mime.LastErrorText)
    Return
End If

If (mime.ContainsEncryptedParts()) Then
    System.DebugLog("The message tree contains an encrypted part.")
Else
    System.DebugLog("The message tree contains no encrypted part.")
End If