Seeking simple shc: (SMART Health Card) Validator

Without debating the larger issues of the current California SMART Health
Card COVID-Vaccincation & Test QR credentials, does anyone have an open
source project for a simple linkable-to-iOS library (c, c++, objective-c,
or swift) that can validate shc: data with hard-coded root certs? Ideally
without javascript shims.

I've got a fairly simple QR vault app in the Mac and iOS App store (mostly
written for securing other QRs like shamir SSKR shards of cryptographic
seeds, URs, and other airgapped wallet artifiacts) called Gordian QR Tool,
but I'd really rather not store a shc: certificate without at least
minimally validating it first.

-- Christopher Allen