Canvas Developer Guide

Getting Started
Using Canvas
Reference
Objects
CanvasRequest
Controller
SignedRequest
Canvas Limits
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SignedRequest

Canvas provides a SignedRequest object that has methods you can use to work with signed requests.

Method Signature Description
verifyAndDecode public static CanvasRequest verifyAndDecode(String input, String secret) throws SecurityException Used to verify and decode a signed request; returns a CanvasRequest Java object.
verifyAndDecodeAsJson public static String verifyAndDecodeAsJson(String input, String secret) throws SecurityException Used to verify and decode a signed request; returns the CanvasRequest data in a JSON string.