System and method for providing secure cloud-based single sign-on connections using a security service provider having zero-knowledge architecture

Abstract

Systems and methods for providing secure single sign-on authentication and management of encrypted vault in a fully cloud-based zero-knowledge environment. A user on a client device attempts to use a network resource. The user is directed to login to the identity provider. The identity provider authenticates the user through a login process. If the user is identified to be a valid user, the identity provider sends the user an attestation sign-on key to confirm the user is valid. The client device sends the attestation sign-on key to a vault service provider, which verifies the attestation using a configured public key. The client device retrieves a data decryption key and an encrypted data key, which are stored in different entities in the system. The encrypted data key is decrypted on the client device using the data decryption key.