DecodingError: Unable to decode UsNatCoreSegment | Known Child Sensitive Data Consents

[DmitryKoshmanFP]

Hi!

Input GPP strings:

• Opt Out: DBABL~BVQVAAAAAg
• Not Opt Out: DBABL~BVQqAAAAAg

IABGpp Versions: Java 3.2.3, ES 3.1.6.

We want to use a Google US IAB states support. This will allow us to show a popup with privacy options for our users.

First of all, we tried parsing the generated gpp string using the Java version of this library, and on version 3.2.2, the output gpp string from UMP decodes successfully, just like on iabgpp.com last week.

But on version 3.2.3, it gives an error (DecodingError: Unable to decode UsNatCoreSegment 'BVQqAAAAAg'), as on iabgpp.com currently.

At the moment, the ES library can't parse these input strings either.

After some debugging I think that the cause of the problem is a new number of bits for the Known Child Sensitive Data Consents field. Backward compatibility is not implemented for the case when decoder received gpp string with shorter field. And the code tries to get a substring with 56 to 62 index when the original bitstring has only 60 characters.

1. Does this work as intended and the UMP SDK just hasn't updated its encoder or is the problem in IAB decoder?
2. Is there any versioning for such field breaking changes.
3. Are there any planned fixes/updates related to this issue?

[shanir-frid-taboola]

I had the same issue