Java tutorial
/* * Copyright 2012 the original author or authors. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.brekka.phalanx.core.services.impl; import java.util.UUID; import org.brekka.phalanx.api.model.AuthenticatedPrincipal; import org.brekka.phalanx.core.dao.PrincipalDAO; import org.brekka.phalanx.core.model.AsymmetricKeyPair; import org.brekka.phalanx.core.model.Principal; import org.brekka.phalanx.core.services.AsymmetricCryptoService; import org.brekka.phalanx.core.services.PrincipalService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import org.springframework.transaction.annotation.Propagation; import org.springframework.transaction.annotation.Transactional; @Service @Transactional public class PrincipalServiceImpl implements PrincipalService { @Autowired private PrincipalDAO principalDAO; @Autowired private AsymmetricCryptoService asymmetricCryptoService; @Override @Transactional(propagation = Propagation.SUPPORTS) public AuthenticatedPrincipal authenticate(Principal principal, String password) { Principal managedUser = principalDAO.retrieveById(principal.getId()); AsymmetricKeyPair defaultKeyPair = managedUser.getDefaultKeyPair(); InternalPrivateKeyToken privateKeyToken = (InternalPrivateKeyToken) asymmetricCryptoService .decrypt(defaultKeyPair, password); InternalAuthenticatedUser authenticatedUser = new InternalAuthenticatedUser(managedUser, privateKeyToken); return authenticatedUser; } @Override @Transactional(propagation = Propagation.REQUIRED) public Principal createPrincipal(String password) { Principal principal = new Principal(); AsymmetricKeyPair keyPair = asymmetricCryptoService.generateKeyPair(password, principal); principal.setDefaultKeyPair(keyPair); principalDAO.create(principal); return principal; } @Override @Transactional(propagation = Propagation.REQUIRED) public Principal retrieveById(UUID principalId) { return principalDAO.retrieveById(principalId); } @Override @Transactional(propagation = Propagation.REQUIRED) public void deletePrincipal(UUID principalId) { principalDAO.delete(principalId); } }