Source:
public boolean isValidPassword(String serverName, Object existingCredentials) throws DirectoryServerManagerException { DirContext dirContext; try { dirContext = this.connectionSource.getContext(); } catch (UserStoreException e) { throw new DirectoryServerManagerException("Unable to retrieve directory connection.", e); } String searchBase = this.realmConfiguration.getUserStoreProperty(LDAPConstants.USER_SEARCH_BASE); String searchFilter = getServicePrincipleFilter(serverName); SearchControls searchControls = new SearchControls(); searchControls.setSearchScope(SearchControls.SUBTREE_SCOPE); searchControls.setReturningAttributes(new String[]{LDAPServerManagerConstants.LDAP_PASSWORD}); try { NamingEnumeration<SearchResult> namingEnumeration = dirContext .search(searchBase, searchFilter, searchControls); while (namingEnumeration.hasMore()) { SearchResult searchResult = namingEnumeration.next(); Attributes attributes = searchResult.getAttributes(); Attribute userPassword = attributes.get(LDAPServerManagerConstants.LDAP_PASSWORD); NamingEnumeration passwords = userPassword.getAll(); String passwordHashMethod = null; if (passwords.hasMore()) { byte[] byteArray = (byte[]) passwords.next(); String password = new String(byteArray, Charset.forName("UTF-8")); if (password.startsWith("{")) { passwordHashMethod = password.substring(password.indexOf("{") + 1, password.indexOf("}")); } return password.equals(getPasswordToStore((String) existingCredentials, passwordHashMethod)); } } } catch (NamingException e) { log.error("Failed, validating password. Can not access the directory service", e); throw new DirectoryServerManagerException("Failed, validating password. " + "Can not access the directory service", e); } finally { try { JNDIUtil.closeContext(dirContext); } catch (UserStoreException e) { log.error("Unable to close directory context.", e); } } return false; }

Target:
public boolean isValidPassword(String serverName, Object existingCredentials) throws DirectoryServerManagerException { DirContext dirContext; try { dirContext = this.connectionSource.getContext(); } catch (UserStoreException e) { throw new DirectoryServerManagerException("Unable to retrieve directory connection.", e); } String searchBase = this.realmConfiguration.getUserStoreProperty(LDAPConstants.USER_SEARCH_BASE); String searchFilter = getServicePrincipleFilter(serverName); SearchControls searchControls = new SearchControls(); searchControls.setSearchScope(SearchControls.SUBTREE_SCOPE); searchControls.setReturningAttributes(new String[]{LDAPServerManagerConstants.LDAP_PASSWORD}); try { NamingEnumeration<SearchResult> namingEnumeration = dirContext .search(searchBase, searchFilter, searchControls); while (namingEnumeration.hasMore()) { SearchResult searchResult = namingEnumeration.next(); Attributes attributes = searchResult.getAttributes(); Attribute userPassword = attributes.get(LDAPServerManagerConstants.LDAP_PASSWORD); NamingEnumeration passwords = userPassword.getAll(); String passwordHashMethod = null; if (passwords.hasMore()) { byte[] byteArray = (byte[]) passwords.next(); String password = new String(byteArray, StandardCharsets.UTF_8); if (password.startsWith("{")) { passwordHashMethod = password.substring(password.indexOf("{") + 1, password.indexOf("}")); } return password.equals(getPasswordToStore((String) existingCredentials, passwordHashMethod)); } } } catch (NamingException e) { log.error("Failed, validating password. Can not access the directory service", e); throw new DirectoryServerManagerException("Failed, validating password. " + "Can not access the directory service", e); } finally { try { JNDIUtil.closeContext(dirContext); } catch (UserStoreException e) { log.error("Unable to close directory context.", e); } } return false; }