Package org.opends.server.extensions

Class CryptPasswordStorageScheme

java.lang.Object
org.opends.server.api.PasswordStorageScheme<CryptPasswordStorageSchemeCfg>
org.opends.server.extensions.CryptPasswordStorageScheme
All Implemented Interfaces:
ConfigurationChangeListener<CryptPasswordStorageSchemeCfg>
public final class CryptPasswordStorageScheme extends PasswordStorageScheme<CryptPasswordStorageSchemeCfg> implements ConfigurationChangeListener<CryptPasswordStorageSchemeCfg>
This class defines a Directory Server password storage scheme based on the UNIX Crypt algorithm. This is a legacy one-way digest algorithm intended only for situations where passwords have not yet been updated to modern hashes such as SHA-1 and friends. This implementation does perform weak salting, which means that it is more vulnerable to dictionary attacks than schemes with larger salts.

  • Constructor Details

    • CryptPasswordStorageScheme

      public CryptPasswordStorageScheme()

  • Method Details

    • initializePasswordStorageScheme

      public void initializePasswordStorageScheme(CryptPasswordStorageSchemeCfg 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<CryptPasswordStorageSchemeCfg>
      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<CryptPasswordStorageSchemeCfg>
      Returns:
      The name of the password storage scheme provided by this handler.

    • encodePassword

      public ByteString encodePassword(ByteString plaintext) throws LdapException
      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<CryptPasswordStorageSchemeCfg>
      Parameters:
      plaintext - The plaintext version of the password.
      Returns:
      The password that has been encoded using this storage scheme.
      Throws:
      LdapException - If a problem occurs while processing.

    • passwordMatches

      public boolean passwordMatches(ByteString plaintextPassword, ByteString 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<CryptPasswordStorageSchemeCfg>
      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<CryptPasswordStorageSchemeCfg>
      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.

    • isConfigurationAcceptable

      public boolean isConfigurationAcceptable(CryptPasswordStorageSchemeCfg configuration, List<LocalizableMessage> unacceptableReasons)
      Description copied from class: PasswordStorageScheme
      Indicates whether the provided configuration is acceptable for this password storage scheme. It should be possible to call this method on an uninitialized password storage scheme instance in order to determine whether the password storage scheme would be able to use the provided configuration.
      Overrides:
      isConfigurationAcceptable in class PasswordStorageScheme<CryptPasswordStorageSchemeCfg>
      Parameters:
      configuration - The password storage scheme configuration for which to make the determination.
      unacceptableReasons - A list that may be used to hold the reasons that the provided configuration is not acceptable.
      Returns:
      true if the provided configuration is acceptable for this password storage scheme, or false if not.

    • isConfigurationChangeAcceptable

      public boolean isConfigurationChangeAcceptable(CryptPasswordStorageSchemeCfg 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<CryptPasswordStorageSchemeCfg>
      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(CryptPasswordStorageSchemeCfg configuration)
      Description copied from interface: ConfigurationChangeListener
      Applies the configuration changes to this change listener.
      Specified by:
      applyConfigurationChange in interface ConfigurationChangeListener<CryptPasswordStorageSchemeCfg>
      Parameters:
      configuration - The new configuration containing the changes.
      Returns:
      Returns information about the result of changing the configuration.