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.
| Interface | ICredentials | I check credentials. |
| Interface | IUsernameHashedPassword | I encapsulate a username and a hashed password. |
| Interface | IUsernamePassword | I encapsulate a username and a plaintext password. |
| Interface | IAnonymous | I am an explicitly anonymous request for access. |
| Class | DigestedCredentials | Yet Another Simple HTTP Digest authentication scheme. |
| Class | DigestCredentialFactory | Support for RFC2617 HTTP Digest Authentication |
| Class | CramMD5Credentials | An encapsulation of some CramMD5 hashed credentials. |
| Class | UsernameHashedPassword | Undocumented |
| Class | UsernamePassword | Undocumented |
| Class | Anonymous | Undocumented |
| Interface | ISSHPrivateKey | ISSHPrivateKey credentials encapsulate an SSH public key to be checked against a user's private key. |
| Class | SSHPrivateKey | Undocumented |