During which of the following steps is the public/private key-pair generated for Public Key Infrastructure (PKI)?

Key Recovery is the process of retrieving a previously generated private key from a secure archive, not the step where keys are originally created.

During the Initialization phase of PKI, the entity generates its cryptographic key pair consisting of a public and private key. This step must occur first so the public key can be submitted during Registration and later signed by a Certificate Authority during the Certification phase.

Registration is the step where the entity submits identity information and its public key to a Registration Authority, not where the key pair is generated.

Certification is the step where the Certificate Authority signs and issues the digital certificate binding the public key to the entity's identity.