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PureBasic

Check if a Received Email Was Decrypted

See more Email Object Examples

Demonstrates the read-only Chilkat Email.Decrypted property, which is true if the email arrived encrypted and was successfully decrypted. This property is only meaningful when ReceivedEncrypted is true, so you should always check ReceivedEncrypted first — a false value can mean either that the message was not encrypted or that decryption did not succeed. This example loads a received email and reports its encryption/decryption status.

Background: Encrypted email typically uses S/MIME. The sender encrypts the message with the recipient's public-key certificate, and only the holder of the matching private key can decrypt it. When Chilkat loads such a message and has access to the private key, it decrypts automatically; ReceivedEncrypted tells you the message arrived encrypted, and Decrypted tells you whether decryption succeeded.

Chilkat PureBasic Downloads

PureBasic
IncludeFile "CkEmail.pb"

Procedure ChilkatExample()

    success.i = 0

    ;  Demonstrates the Email.Decrypted property.
    ;  Decrypted is true if the email arrived encrypted and was successfully
    ;  decrypted.  It is only meaningful when ReceivedEncrypted is true.

    email.i = CkEmail::ckCreate()
    If email.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    ;  Load an email that was received (from a .eml file).
    success = CkEmail::ckLoadEml(email,"qa_data/eml/received.eml")
    If success = 0
        Debug CkEmail::ckLastErrorText(email)
        CkEmail::ckDispose(email)
        ProcedureReturn
    EndIf

    ;  Always check ReceivedEncrypted first.
    If CkEmail::ckReceivedEncrypted(email) = 1
        If CkEmail::ckDecrypted(email) = 1
            Debug "The email was encrypted and was successfully decrypted."
        Else
            Debug "The email was encrypted but could NOT be decrypted."
        EndIf

    Else
        Debug "The email did not arrive encrypted."
    EndIf



    CkEmail::ckDispose(email)


    ProcedureReturn
EndProcedure