Alternate keyring backend implementations for use with the keyring package.

Keyrings in this package may have security risks or other implications. These backends were extracted from the main keyring project to make them available for those who wish to employ them, but are discouraged for general production use. Include this module and use its backends at your own risk.

For example, the PlaintextKeyring stores passwords in plain text on the file system, defeating the intended purpose of this library to encourage best practices for security.