Package org.apache.sshd.common.auth

Interface UserAuthMethodFactory<S extends SessionContext,M extends UserAuthInstance<S>>

Type Parameters:

S - The type of SessionContext being provided to the instance creator

M - The authentication method factory type

All Superinterfaces:

NamedResource

public interface UserAuthMethodFactory<S extends SessionContext,M extends UserAuthInstance<S>>
extends NamedResource

Represents a user authentication method

Author:

Apache MINA SSHD Project

Field Summary

Fields

Modifier and Type	Field	Description
static String	HOST_BASED	Host-based authentication method
static String	KB_INTERACTIVE	Keyboard interactive authentication method
static String	PASSWORD	Password authentication method name
static String	PUBLIC_KEY	Public key authentication method name

Fields inherited from interface org.apache.sshd.common.NamedResource

BY_NAME_COMPARATOR, NAME_EXTRACTOR

Method Summary

Modifier and Type	Method	Description
M	createUserAuth(S session)
static <S extends SessionContext,M extends UserAuthInstance<S>> M	createUserAuth(S session, Collection<? extends UserAuthMethodFactory<S,M>> factories, String name)
static boolean	isDataIntegrityAuthenticationTransport(SessionContext session)
static boolean	isSecureAuthenticationTransport(SessionContext session)	According to RFC 4252 - section 8:

Methods inherited from interface org.apache.sshd.common.NamedResource

getName

Field Detail

PASSWORD

static final String PASSWORD

Password authentication method name

See Also:

Constant Field Values

PUBLIC_KEY

static final String PUBLIC_KEY

Public key authentication method name

See Also:

Constant Field Values

KB_INTERACTIVE

static final String KB_INTERACTIVE

Keyboard interactive authentication method

See Also:

Constant Field Values

HOST_BASED

static final String HOST_BASED

Host-based authentication method

See Also:

Constant Field Values

Method Detail

createUserAuth

M createUserAuth(S session)
          throws IOException

Parameters:

session - The session for which authentication is required

Returns:

The authenticator instance

Throws:

IOException - If failed to create the instance

createUserAuth

static <S extends SessionContext,M extends UserAuthInstance<S>> M createUserAuth(S session,
                                                                                       Collection<? extends UserAuthMethodFactory<S,M>> factories,
                                                                                       String name)
                                                                                throws IOException

Type Parameters:

S - The type of SessionContext being provided to the instance creator

M - The authentication method factory type

Parameters:

session - The session through which the request is being made

factories - The available factories

name - The requested factory name

Returns:

The created authenticator instance - null if no matching factory

Throws:

IOException - If failed to create the instance

isSecureAuthenticationTransport

static boolean isSecureAuthenticationTransport(SessionContext session)

According to RFC 4252 - section 8:

      Both the server and the client should check whether the underlying
      transport layer provides confidentiality (i.e., if encryption is
      being used).  If no confidentiality is provided ("none" cipher),
      password authentication SHOULD be disabled.  If there is no
      confidentiality or no MAC, password change SHOULD be disabled.
 

Parameters:

session - The SessionContext being used for authentication

Returns:

true if the context is not null and the ciphers have been established to anything other than "none".

See Also:

CommonModuleProperties.ALLOW_INSECURE_AUTH, SessionContext.isSecureSessionTransport(SessionContext)

isDataIntegrityAuthenticationTransport

static boolean isDataIntegrityAuthenticationTransport(SessionContext session)

Parameters:

session - The SessionContext being used for authentication

Returns:

true if the context is not null and the MAC(s) used to verify packet integrity have been established.

See Also:

CommonModuleProperties.ALLOW_NON_INTEGRITY_AUTH, SessionContext.isDataIntegrityTransport(SessionContext)