APTOS, Calif.--(BUSINESS WIRE)--Engage Black, the security business unit of Engage Communication, is announcing the introduction of the BlackVault CA (Certificate Authority) security appliance at this year’s RSA conference in San Francisco (Booth #2644 in the South Hall). The BlackVault CA integrates a Layer 3+ Hardware Security Module (HSM) with application specific certificate authority functionality to simplify and improve the process of secure management and storage of cryptographic keys. h