DeepCover® Secure Authenticator with SHA-256 Analog Devices Inc. DeepCover® Secure Authenticator with SHA-256 is an embedded security solution to cloak sensitive data under multiple layers of advanced physical security to provide the most secure key storage possible. The SHA-256 coprocessor is an I²C slave controlled by a host processor which delivers unsurpassed low-cost IP protection, clone prevention, and peripheral authentication. ADI DeepCover Secure Authenticator with SHA-256 is ideal for authentication and secure feature control.