IssuerAlternativeName: failed to decode: unexpected ASN.1 DER tag: got CONTEXT-SPECIFIC [5] (primitive)

[farble1670]

Steps to reproduce:

• Using either CA DMV or Google Wallet holder app, engage w/ Showcase app to verify mDL, using QR code, using my REAL CA issued mDL
• See "Issuer not authenticated"
• Everything else seems to work. Data from mDL is displayed.

Detailed error:

Response Processing Errors: {"certificate_errors":["IACA certificate error: IssuerAlternativeName: failed to decode: unexpected ASN.1 DER tag: got CONTEXT-SPECIFIC [5] (primitive)"]}

Could be this?

IssuerAlternativeName ::= GeneralNames
GeneralNames ::= SEQUENCE SIZE (1..MAX) OF GeneralName

and,

GeneralName ::= CHOICE {
...
    ediPartyName                    [5]     EDIPartyName,  <-- tag [5] from the error message?
... }

Feel free to edit the above out if it's wrong / misleading.

I don't see that tag in any of the preloaded roots, so I guess this is from the DS cert? It wasn't clear how I could dump the content of that though. Not familiar w/ Rust. Where does println from Rust go in Android? Also wasn't clear how to get a handle to the cert chain to log it.

Let me know if I can provide anything else.