Tag Phone Attestation For Free

Essentially, the attestation levels are designed to protect the integrity of the telecom networks and provide a way to signal confidence levels to other carriers that the calls can be trusted, and at what level.

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.

"Gateway Attestation", "C", indicates the call can only be verified as coming from a known gateway, for instance, a connection to another service provider.

Simply put, an attestation letter (often called an Executive Summary Report) is a statement or declaration from an independent third party that lends credibility to the part of the organization undergoing review.

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.

Key attestation refers to verifying the integrity and authenticity of cryptographic keys stored within an HSM or other hardware device. It involves generating a cryptographic certificate that attests to the validity of the keys and ensures they have not been tampered with or compromised.

Key attestation provides a way for a device's secure hardware to verify that an asymmetric key is in secure hardware, protected against compromise of the Android OS.