SignAndEncrypt Method
Signs and encrypts the current message.
Syntax
int SignAndEncrypt();
Remarks
This method both signs and encrypts the input message into a single PKCS encoded envelope. The value in DetachedSignature is ignored: the class will always generate an attached signature when calling this method. All other properties used by calling the Sign and Encrypt methods are used in the same manner.
Please note that the message headers, including the Sender, Recipient(s), and Subject, are not encrypted. If this is sensitive information, consider including these headers in the message body as a MIME entity, and providing other headers for the S/MIME wrapper.
Input and Output Properties
The class will determine the source and destination of the input and output based on which properties are set.
The order in which the input properties are checked is as follows:
When a valid source is found the search stops. The order in which the output properties are checked is as follows:
- OutputFile
- OutputMessage: The output data is written to this property if no other destination is specified.
The headers of the input message (if any) will be read from InputMessageHeaders or InputMessageHeadersString.
The headers of the resulting message will be available in the OutputMessageHeaders and OutputMessageHeadersString properties.
Error Handling
This method returns a result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message. (Note: This method's result code can also be obtained by calling the GetLastErrorCode() method after it returns.)