Method for issuing a digital certificate by a certification authority, arrangement for performing the method, and computer system of a certification authority

This invention describes a specific way for a digital certificate authority to verify a device's identity before issuing it a digital certificate. It uses a challenge-response system where the authority sends a unique, random mathematical challenge, and the device must respond correctly. The device's initial request for a certificate must also be signed using its own private key, proving its ownership of the public key it wants certified.

Why it matters: Filed before the massive proliferation of IoT devices, this method offers a robust way to authenticate devices for certificate issuance. The increased attack surface and regulatory pressures around device security since 2010 make scalable and secure device identity management critically important.

Status: Not in forceListed as no longer active. The specific reason is not in the record we hold.
How hard to build: SpecializedSoftware logic, cryptographic protocols

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