Android key attestation for POST /a

[ottodimi]

Wire AndroidAttestationService, cert chain verification, and embedded Google hardware attestation roots. Extend BundleIdentifier with certificate_sha256_digest_base64 for attestation signature checks.

[NnnOooPppEee]

I think it would be at least 3 cert in the chain, but I did not do research on this, do you have a sense of why we chosed 2?

[ottodimi]

Actually I just instinctively used 2 because I have special treatment for first and last cert in chain. Honestly it could be 1.

[socket-security]

Warning

Review the following alerts detected in dependencies.

According to your organization's Security Policy, it is recommended to resolve "Warn" alerts. Learn more about Socket for GitHub.

Action	Severity	Alert  (click "▶" to expand/collapse)
Warn		License policy violation: cargo webpki-roots under CDLA-Permissive-2.0 License: CDLA-Permissive-2.0 - the applicable license policy does not allow this license (4) (webpki-roots-1.0.6/Cargo.toml) License: CDLA-Permissive-2.0 - the applicable license policy does not allow this license (4) (webpki-roots-1.0.6/LICENSE) From: ? → cargo/reqwest@0.12.28 → cargo/aws-config@1.8.14 → cargo/aws-sdk-kinesis@1.101.0 → cargo/aws-sdk-kms@1.102.0 → cargo/aws-sdk-dynamodb@1.107.0 → cargo/webpki-roots@1.0.6 ℹ Read more on: This package | This alert | What is a license policy violation? Next steps: Take a moment to review the security alert above. Review the linked package source code to understand the potential risk. Ensure the package is not malicious before proceeding. If you're unsure how to proceed, reach out to your security team or ask the Socket team for help at support@socket.dev. Suggestion: Find a package that does not violate your license policy or adjust your policy to allow this package's license. Mark the package as acceptable risk. To ignore this alert only in this pull request, reply with the comment @SocketSecurity ignore cargo/webpki-roots@1.0.6. You can also ignore all packages with @SocketSecurity ignore-all. To ignore an alert for all future pull requests, use Socket's Dashboard to change the triage state of this alert.

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