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TPM key attestation is the ability of the entity requesting a certificate to cryptographically prove to a CA that the RSA key in the certificate request is protected by either "a" or "the" TPM that the CA trusts.

The attestation process uses a series of measurements that are unique to an enclave. You can use these measurements to create access policies in external services to grant the enclave access to special cryptographic operations.

Attestation, also called consular Attestation, refers to a consular practice ensuring authenticity of the very last signature or the seal affixed to a document related to the application from a natural person, legal person or other organization.

This attestation provides assurance that the properties of the device (for example, the serial number) are legitimate (as attested to by the device's Secure Enclave and verified by Apple's servers) and not spoofed.

Attestation services in India play a vital role in verifying the authenticity and legality of various documents. By obtaining attested documents, individuals ensure compliance with legal requirements, facilitate international travel and employment, prevent fraud, and enhance professional and educational opportunities.

The SafetyNet Attestation API provides a cryptographically-signed attestation, assessing the device's integrity. In order to create the attestation, the API examines the device's software and hardware environment, looking for integrity issues, and comparing it with the reference data for approved Android devices.

To remedy this, Keymaster introduced key attestation in Android 7.0 (Keymaster 2) and ID attestation in Android 8.0 (Keymaster 3). Key attestation aims to provide a way to strongly determine if an asymmetric key pair is hardware-backed, what the properties of the key are, and what constraints are applied to its usage.