GraffitiSuite - UI Shouldn't Be Hard

Table of Contents

GraffitiTOTPProvider is a class that supports the creation and validation of time-based one time passcodes.

This class exposes no enumerations.

This class exposes no constants.

This class exposes no events.

Name	Parameters	Return Type	Description
Constructor	None	None	Creates a new instance. Note that the Secret property should be populated at some point in order for the class to function as expected.
Constructor	secret as String	None	Creates a new instance with the secret pre-set.
Generate	time as DateTime = nil	UInteger	Generates a new code for the time specified. If not time is specified then DateTime.now is used.
GenerateBackupCodes	count as Integer = 4	Integer()	Generates a set of backup codes. These should be stored somewhere with user data so that they can be compared if validation fails when the user enters a failing code.
ToQRCode	user as String service as String width as Integer height as Integer	Picture	Uses Xojo’s built-in Barcode.Image functionality to generate a QR code that the user can scan to add the TOTP credentials to their authenticator app. This does not currently function on Xojo Web as Barcode.Image is not supported, but will require no future changes once it is.
ToURI	user as String service as String	String	Returns the OTPAUTH:// URI for the secret plus the parameters. May be used with GraffitiQR to display QR codes for authenticator scanning.
Verify	code as UInteger	Boolean	Checks the code to see if it matches with the one generated for the current timeframe, last timeframe, or the next timeframe.

Name	Type	Default Value	Description
Secret	String	“”	Secret string used for generation and validation. This should be unique to each user, and will need to be stored to use for verification later.

This class currently has no examples.

GraffitiTOTPProvider