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Status Future consideration
Workspace DataPower Gateway
Created by Guest
Created on Apr 5, 2019

Support numeric claims in JOSE DataPower library

The IBM DataPower JOSE library does not support numeric values for claims - it should according to the spec.

We have a production implementation of the Open Banking specification. As part of this we implement the Message Signing specification which uses a JSON Web Token (this must be a JSON number representing the number of seconds from 1970-01-01T0:0:0Z as measured in GMT until the date/time. )

There are various claims in the JWT protected header. One of these needs to be a numeric value : http://openbanking.org.uk/iat

https://openbanking.atlassian.net/wiki/spaces/DZ/pages/641992418/Read+Write+Data+API+Specification+-+v3.0#Read/WriteDataAPISpecification-v3.0-MessageSigning

If a numeric value is supplied - the JOSE library throws an error when parsing it

var jwsObject = jose.parse(jwsRequestHeader)

Error: mpgw (webapi): Invalid type 'number (1554393946)' detected on method invocation. Method name: setProtected; Parameter index: 1; Expected type: string

This is related to an earlier RFE (id: 129394) we raised which had a similar issue with Boolean values not being supported (for the b64 claim):

https://www.ibm.com/developerworks/rfe/execute?use_case=viewRfe&CR_ID=129394

A patch was released to us early - we ask the same for this (with increased urgency as this is now in production)

Idea priority Urgent
RFE ID 131757
RFE URL
RFE Product IBM DataPower Gateways