Computer services, namely, authentication of people and authentication of digital signatures within an electronic operation or communication occurring via Internet or via another computer network; computer services, namely, development, design, implementation, testing, analysis, and consulting services related to security, access, authorization, authentication, and identification systems for computers, computer hardware, and computer networks; computer services and related services, namely, management services for computer networks and Internet security consisting of the verification, authentication, distribution, and management of public key infrastructure, issuance, verification, and management of digital certificates, and integration with business software. Development, implementation, integration, and operation of computer systems, methods, and procedures for the issuance and management of certificates or digital identities; computer platform used to publish or approve and sign, digitally, a document on the Internet, by one or several people or entities