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marctrem
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geffrak
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Mar 5, 2026
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Extract device and OS metadata from the undocumented Apple App Attest certificate extension (OID 1.2.840.113635.100.8.7). Adds a DeviceInfo struct to VerifyAttestationOutput with fields for OS version, build, device class, iBoot version, SEP version, platform, and build variant.
Field meanings are reverse-engineered from real attestation payloads and are best-effort. Parsing is lenient — unrecognized or malformed fields are silently skipped, and DeviceInfo is nil when the extension is absent.