Package org.opends.server.extensions

Class BcryptPasswordStorageScheme

java.lang.Object

org.opends.server.api.PasswordStorageScheme<BcryptPasswordStorageSchemeCfg>

org.opends.server.extensions.BcryptPasswordStorageScheme

All Implemented Interfaces:

ConfigurationChangeListener<BcryptPasswordStorageSchemeCfg>

public final class BcryptPasswordStorageScheme
extends PasswordStorageScheme<BcryptPasswordStorageSchemeCfg>
implements ConfigurationChangeListener<BcryptPasswordStorageSchemeCfg>

This class defines a Directory Server password storage scheme that will encode values using the BCrypt encryption algorithm. This implementation supports only the user password syntax and not the auth password syntax.

Constructor Summary

Constructors

Constructor	Description
BcryptPasswordStorageScheme()

Method Summary

Modifier and Type	Method	Description
ConfigChangeResult	applyConfigurationChange(BcryptPasswordStorageSchemeCfg configuration)	Applies the configuration changes to this change listener.
ByteString	encodePassword(ByteSequence plaintext)	Encodes the provided plaintext password for this storage scheme, without the name of the associated scheme.
String	getStorageSchemeName()	Retrieves the name of the password storage scheme provided by this handler.
void	initializePasswordStorageScheme(BcryptPasswordStorageSchemeCfg configuration, ServerContext serverContext)	Initializes this password storage scheme handler based on the information in the provided configuration entry.
boolean	isConfigurationChangeAcceptable(BcryptPasswordStorageSchemeCfg configuration, List<LocalizableMessage> unacceptableReasons)	Indicates whether the proposed change to the configuration is acceptable to this change listener.
boolean	isRehashNeeded(ByteSequence storedPassword)	Indicates whether the encoded password needs to be rehashed because the password storage scheme configuration changed.
boolean	isStorageSchemeSecure()	Indicates whether this password storage scheme should be considered "secure".
boolean	passwordMatches(ByteSequence plaintextPassword, ByteSequence storedPassword)	Indicates whether the provided plaintext password included in a bind request matches the given stored value.

Methods inherited from class org.opends.server.api.PasswordStorageScheme

authPasswordMatches, destroySilently, encodeAuthPassword, encodePasswordWithScheme, finalizePasswordStorageScheme, getAuthPasswordPlaintextValue, getAuthPasswordSchemeName, getPlaintextValue, isConfigurationAcceptable, isReversible, supportsAuthPasswordSyntax

Methods inherited from class java.lang.Object

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

Constructor Detail

BcryptPasswordStorageScheme

public BcryptPasswordStorageScheme()

Method Detail

initializePasswordStorageScheme

public void initializePasswordStorageScheme(BcryptPasswordStorageSchemeCfg configuration,
                                            ServerContext serverContext)

Description copied from class: PasswordStorageScheme

Initializes this password storage scheme handler based on the information in the provided configuration entry. It should also register itself with the Directory Server for the particular storage scheme that it will manage.

Specified by:

initializePasswordStorageScheme in class PasswordStorageScheme<BcryptPasswordStorageSchemeCfg>

Parameters:

configuration - The configuration entry that contains the information to use to initialize this password storage scheme handler.

serverContext - The server context

getStorageSchemeName

public String getStorageSchemeName()

Description copied from class: PasswordStorageScheme

Retrieves the name of the password storage scheme provided by this handler.

Specified by:

getStorageSchemeName in class PasswordStorageScheme<BcryptPasswordStorageSchemeCfg>

Returns:

The name of the password storage scheme provided by this handler.

isConfigurationChangeAcceptable

public boolean isConfigurationChangeAcceptable(BcryptPasswordStorageSchemeCfg configuration,
                                               List<LocalizableMessage> unacceptableReasons)

Description copied from interface: ConfigurationChangeListener

Indicates whether the proposed change to the configuration is acceptable to this change listener.

Specified by:

isConfigurationChangeAcceptable in interface ConfigurationChangeListener<BcryptPasswordStorageSchemeCfg>

Parameters:

configuration - The new configuration containing the changes.

unacceptableReasons - A list that can be used to hold messages about why the provided configuration is not acceptable.

Returns:

Returns true if the proposed change is acceptable, or false if it is not.

applyConfigurationChange

public ConfigChangeResult applyConfigurationChange(BcryptPasswordStorageSchemeCfg configuration)

Description copied from interface: ConfigurationChangeListener

Applies the configuration changes to this change listener.

Specified by:

applyConfigurationChange in interface ConfigurationChangeListener<BcryptPasswordStorageSchemeCfg>

Parameters:

configuration - The new configuration containing the changes.

Returns:

Returns information about the result of changing the configuration.

encodePassword

public ByteString encodePassword(ByteSequence plaintext)

Description copied from class: PasswordStorageScheme

Encodes the provided plaintext password for this storage scheme, without the name of the associated scheme. Note that the provided plaintext password should not be altered in any way.

Specified by:

encodePassword in class PasswordStorageScheme<BcryptPasswordStorageSchemeCfg>

Parameters:

plaintext - The plaintext version of the password.

Returns:

The password that has been encoded using this storage scheme.

passwordMatches

public boolean passwordMatches(ByteSequence plaintextPassword,
                               ByteSequence storedPassword)

Description copied from class: PasswordStorageScheme

Indicates whether the provided plaintext password included in a bind request matches the given stored value. The provided stored value should not include the scheme name in curly braces.

Specified by:

passwordMatches in class PasswordStorageScheme<BcryptPasswordStorageSchemeCfg>

Parameters:

plaintextPassword - The plaintext password provided by the user as part of a simple bind attempt.

storedPassword - The stored password to compare against the provided plaintext password.

Returns:

true if the provided plaintext password matches the provided stored password, or false if not.

isStorageSchemeSecure

public boolean isStorageSchemeSecure()

Description copied from class: PasswordStorageScheme

Indicates whether this password storage scheme should be considered "secure". If the encoding used for this scheme does not obscure the value at all, or if it uses a method that is trivial to reverse (e.g., base64), then it should not be considered secure.

This may be used to determine whether a password may be included in a set of search results, including the possibility of overriding access controls in the case that access controls would allow the password to be returned but the password is considered too insecure to reveal.

Specified by:

isStorageSchemeSecure in class PasswordStorageScheme<BcryptPasswordStorageSchemeCfg>

Returns:

false if it may be trivial to discover the original plain-text password from the encoded form, or true if the scheme offers sufficient protection that revealing the encoded password will not easily reveal the corresponding plain-text value.

isRehashNeeded

public boolean isRehashNeeded(ByteSequence storedPassword)

Description copied from class: PasswordStorageScheme

Indicates whether the encoded password needs to be rehashed because the password storage scheme configuration changed. Only password storage schemes with specific configuration parameters, such as PBKDF2, need to override this method.

Overrides:

isRehashNeeded in class PasswordStorageScheme<BcryptPasswordStorageSchemeCfg>

Parameters:

storedPassword - An existing hashed password including the name of the storage scheme.

Returns:

whether the stored password should be rehashed.