EncryptAndSignFile Method
Encrypts and signs a file.
Syntax
int EncryptAndSignFile(const QString& qsSourceFile, const QString& qsDestFile);
Remarks
Use this method to encrypt and sign a file and save the protected message in another file.
Specify encryption keys in EncryptingKeys property, and/or encryption password via Passphrase property. Use SigningKeys to provide the signing keys.
Please note that you might need to provide a passphrase to decrypt your signing key. This can be done via KeyPassphraseNeeded event, or by assigning the passphrase to the key object's Passphrase property.
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.)