Magento_EncryptionKey module
The Magento_EncryptionKey module provides an advanced encryption model to protect passwords and other sensitive data.
Extensibility
Extension developers can interact with the Magento_EncryptionKey module. For more information about the Magento extension mechanism, see Magento plugins.
The Magento dependency injection mechanism enables you to override the functionality of the Magento_EncryptionKey module.
Layouts
This module introduces the following layouts and layout handles in the view/adminhtml/layout directory:
adminhtml_crypt_key_index
Additional information
For information about significant changes in patch releases, see Release information.
Some more information you can get at Encryption Key article.
