The subject matter herein is directed to a digital data locker that acts as an intermediary between end users operating end user device and document providers. The data locker provides the end user with a secure and easy way to manage, store, and retrieve data that is stored at the document providers. Specifically, the features provided by the data locker include, but are not limited to, a dual level of encryption for data, content assurance to determine whether the data is corrupted, and dissociation between an identity of an end user and the data of the end user stored at the document providers. More specifically, an end user device operated by the end user, through use of a single application, may access the data locker to securely store and retrieve data on/from the document providers.