The EncryptedStorage plugin provides an encrypted local storage mechanism to allow
storage of an application's private data on the user's device.
EncryptedStorage Plugin Overview
The Kapsel EncryptedStorage plugin adds an encrypted key/value pair storage option to Cordova, which uses the same API method signature as the browser’s local storage option and is non-blocking.
Kapsel EncryptedStorage API Reference
The Kapsel EncryptedStorage API Reference provides usage information for EncryptedStorage API classes and methods, as well as provides sample source code.