A method of validating a certificate by tracing each CA that signs the certificate up through the hierarchy to the root CA is known as

A method of validating a certificate by tracing each CA that signs the certificate up through the hierarchy to the root CA is known as

• A. Certificate chaining
• B. Certificate authority
• C. Root certificate
• D. Public key infrastructure

Answer: (A)

Certificate chaining, or building a chain of trust, is the process of validating a certificate by tracing the signatures from the end-entity certificate up through any intermediate certificates to a root certificate that is trusted. Each certificate in the chain is signed by the next certificate up, creating a path to a trusted root. During validation, every link must be valid: the signatures must be correct, the certificates must be within their validity periods, and there must be no revocation issues blocking the path. If such a continuous path to a trusted root exists, trust in the end-entity certificate is established. The other terms refer to components or the overall framework rather than the validation method: a certificate authority is the issuer, a root certificate is the top trusted anchor, and a PKI is the broader system that supports issuing, managing, and revoking certificates.

Certificate chaining, or building a chain of trust, is the process of validating a certificate by tracing the signatures from the end-entity certificate up through any intermediate certificates to a root certificate that is trusted. Each certificate in the chain is signed by the next certificate up, creating a path to a trusted root. During validation, every link must be valid: the signatures must be correct, the certificates must be within their validity periods, and there must be no revocation issues blocking the path. If such a continuous path to a trusted root exists, trust in the end-entity certificate is established. The other terms refer to components or the overall framework rather than the validation method: a certificate authority is the issuer, a root certificate is the top trusted anchor, and a PKI is the broader system that supports issuing, managing, and revoking certificates.