42 Authentication services for computer security; authentication, issuance and validation of digital certificates; certification services of data transmitted via telecommunications; certification services of messages transmitted via telecommunications; computer security services for managing digital certificates; computer security services in the nature of administering digital certificates; computer security services in the nature of managing digital certificates; computer security services in the nature of providing digital certificates; computer security services in the nature of providing authentication, issuance, validation and revocation of digital certificates; electronic cryptology services in the nature of digital certificate and digital signature verification services; encryption, decryption and authentication of information, messages and data; digital signature verification services [electronic cryptology services]; software as a service (SaaS) for authentication, verification of identity, security, privacy, and login; software as a service (SaaS) for cryptographic key generation and management; software as a service (SaaS) for cryptographic signature creation and verification; software as a service (SaaS) to issue, verify, transmit, send, receive, share, store, manage, control, encrypt, and decrypt digital credentials, digital identity data, digital documents, digital files, and digital representations of qualifications, certifications, entitlements, and memberships; software as a service (SaaS), namely, blockchain and distributed ledger technology (DLT) software; hosting, rental, and leasing of software for authentication, verification of identity, security, privacy, and login; hosting, rental, and leasing of software for cryptographic key generation and management; hosting, rental, and leasing of software for cryptographic signature creation and verification; hosting, rental, and leasing of software to issue, verify, transmit, send, receive, share, store, manage, control, encrypt, and decrypt digital credentials, digital identity data, digital documents, digital files, and digital representations of qualifications, certifications, entitlements, and memberships; hosting, rental, and leasing of blockchain and distributed ledger technology (DLT) software; development, installation, integration, maintenance, and support services of software for authentication, verification of identity, security, privacy, and login; development, installation, integration, maintenance, and support services of software for cryptographic key generation and management; development, installation, integration, maintenance, and support services of software for cryptographic signature creation and verification; development, installation, integration, maintenance, and support services of software to issue, verify, transmit, send, receive, share, store, manage, control, encrypt, and decrypt digital credentials, digital identity data, digital documents, digital files, and digital representations of qualifications, certifications, entitlements, and memberships; development, installation, integration, maintenance, and support services of blockchain and distributed ledger technology (DLT) software