org.eclipse.jetty.util.security

## Class Credential

- java.lang.Object
- - org.eclipse.jetty.util.security.Credential

- All Implemented Interfaces:
    Serializable
  Direct Known Subclasses:
    Credential.Crypt, Credential.MD5, Password

      public abstract class Credential
      extends Object
      implements Serializable

  Credentials. The Credential class represents an abstract mechanism for checking authentication credentials. A credential instance either represents a secret, or some data that could only be derived from knowing the secret.

  Often a Credential is related to a Password via a one way algorithm, so while a Password itself is a Credential, a UnixCrypt or MD5 digest of a a password is only a credential that can be checked against the password.

  This class includes an implementation for unix Crypt an MD5 digest.

  See Also:
    `Password`, Serialized Form

- - ### Nested Class Summary

    Nested Classes
    Modifier and Type | Class and Description
    --- | ---
    `static class` | `Credential.Crypt` Unix Crypt Credentials
    `static class` | `Credential.MD5` MD5 Credentials

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `Credential()`

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `abstract boolean` | `check(Object credentials)` Check a credential
    `static Credential` | `getCredential(String credential)` Get a credential from a String.

    - ### Methods inherited from class java.lang.Object

      `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- - ### Constructor Detail

    - #### Credential

          public Credential()

  - ### Method Detail

    - #### check

          public abstract boolean check(Object credentials)

      Check a credential
      Parameters:
        `credentials` - The credential to check against. This may either be another Credential object, a Password object or a String which is interpreted by this credential.
      Returns:
        True if the credentials indicated that the shared secret is known to both this Credential and the passed credential.

    - #### getCredential

          public static Credential getCredential(String credential)

      Get a credential from a String. If the credential String starts with a known Credential type (eg "CRYPT:" or "MD5:" ) then a Credential of that type is returned. Else the credential is assumed to be a Password.
      Parameters:
        `credential` - String representation of the credential
      Returns:
        A Credential or Password instance.

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