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This app supports generating, saving, loading, parsing and verifying Android key and ID attestation data. The app is used for self-testing, so it has no network permission. The certificate revocation data is embedded in the apk and will not be updated online. If the system is compromised, parsing and verifying is not safe, you should save the data to a file and then load the file on another device to verify it. This app also supports loading attestation data generated by other software, and the supported storage format is PkiPath and PKCS7.