Certification authority (CA)

Certification authority (CA),

Definition of Certification authority (CA):

  1. Quality control: Duly accredited firm of professionals certified to inspect and verify the conformance of a producers or suppliers documented quality control procedure(s) with the requirements of a quality standard such as ISO 14000.

  2. Internet commerce: Trusted third-party (a bank or a firm such as VeriSign) that issues digital certificates under a public-key infrastructure (PKI) to guaranty that the two parties to a transaction are who they claim to be. CA authenticates a users identity and creates a public-key for message encoding (encryption), and a private-key for message decoding (decryption). Each certification authority has its own identification requirements and validation procedures for issuing certificates, such as drivers permit, passport, fingerprints, notarized declaration, or other documents. Usually, different certificates with different levels of security are issued to suit different user requirements; for example, VeriSign has four classes of certificates with Class-1 having the lowest level of confidence and Class-4 the highest.

  3. Products: Firm (such as Underwriters Laboratory) that allows its certification mark to be used on the goods manufactured by other firms.

Meaning of Certification authority (CA) & Certification authority (CA) Definition