Twisted Cred: Support for verifying credentials, and providing services to user based on those credentials.
| Module | checkers | Basic credential checkers |
| Module | credentials | This module defines ICredentials, an interface for objects that represent authentication credentials to provide, and also includes a number of useful implementations of that interface. |
| Module | error | Cred errors. |
| Module | portal | The point of integration of application and authentication. |
| Module | strcred | Support for resolving command-line strings that represent different checkers available to cred. |
| Module | _digest | Calculations for HTTP Digest authentication. |