Azure Key Vault のサンプル版 7.0、8.0
Azure Key Vault を使用したサンプル アプリケーション
このアプリケーションは、JDBC ドライバー バージョン 7.0、8.0、Azure-Keyvault (バージョン 1.0.0)、Adal4j (バージョン 1.6.0)、およびそれらの依存関係を使用して実行可能です。 プロジェクトのプロジェクト オブジェクト モデル (POM) ファイルにこれらのライブラリを追加することで、基になる依存関係を解決できます。 機能の依存関係の詳細については、「Microsoft JDBC Driver for SQL Server の機能の依存関係」をご覧ください。
import java.net.URISyntaxException;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
import com.microsoft.aad.adal4j.AuthenticationContext;
import com.microsoft.aad.adal4j.AuthenticationResult;
import com.microsoft.aad.adal4j.ClientCredential;
import com.microsoft.sqlserver.jdbc.SQLServerColumnEncryptionAzureKeyVaultProvider;
import com.microsoft.sqlserver.jdbc.SQLServerColumnEncryptionKeyStoreProvider;
import com.microsoft.sqlserver.jdbc.SQLServerConnection;
import com.microsoft.sqlserver.jdbc.SQLServerException;
import com.microsoft.sqlserver.jdbc.SQLServerKeyVaultAuthenticationCallback;
public class AKV {
static String connectionUrl = "jdbc:sqlserver://localhost;integratedSecurity=true;encrypt=true;database=test;columnEncryptionSetting=enabled";
static String applicationClientID = "Your Client ID";
static String applicationKey = "Your Application Key";
static String keyID = "Your Key ID";
static String cmkName = "AKV_CMK_JDBC";
static String cekName = "AKV_CEK_JDBC";
static String akvTable = "akvTable";
static String createTableSQL = "create table " + akvTable + " ("
+ "PlainNvarcharMax nvarchar(max) null,"
+ "RandomizedNvarcharMax nvarchar(max) COLLATE Latin1_General_BIN2 ENCRYPTED WITH (ENCRYPTION_TYPE = RANDOMIZED, ALGORITHM = 'AEAD_AES_256_CBC_HMAC_SHA_256', COLUMN_ENCRYPTION_KEY = "
+ cekName + ") NULL,"
+ "DeterministicNvarcharMax nvarchar(max) COLLATE Latin1_General_BIN2 ENCRYPTED WITH (ENCRYPTION_TYPE = DETERMINISTIC, ALGORITHM = 'AEAD_AES_256_CBC_HMAC_SHA_256', COLUMN_ENCRYPTION_KEY = "
+ cekName + ") NULL" + ");";
public static void main(String[] args)
throws ClassNotFoundException, Exception {
Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
try (Connection connection = DriverManager.getConnection(connectionUrl);
Statement statement = connection.createStatement()) {
statement.execute("DBCC FREEPROCCACHE");
System.out.println("Create SQLServerColumnEncryptionAzureKeyVaultProvider with 'authenticationCallback' and 'executorService(null)'");
/* Constructor added in 6.0.0 driver version and removed in 6.2.2 driver, now added back in 7.0.0 driver
* [Supports SQLServerKeyVaultAuthenticationCallback in 7.0 for backwards compatibility]
* This constructor is marked @deprecated since it no longer uses 'ExecutorService' parameter passed. */
@SuppressWarnings("deprecation")
SQLServerColumnEncryptionAzureKeyVaultProvider akvProvider1 = new SQLServerColumnEncryptionAzureKeyVaultProvider(
tryAuthenticationCallback(), null);
setupKeyStoreProviders(akvProvider1.getName(), akvProvider1);
testAKV(akvProvider1.getName(), akvProvider1, connection, statement);
statement.execute("DBCC FREEPROCCACHE");
System.out.println("Create SQLServerColumnEncryptionAzureKeyVaultProvider with 'authenticationCallback'");
/* Constructor added in 7.0.0 driver version [Supports SQLServerKeyVaultAuthenticationCallback in 7.0 for backwards compatibility]
* This constructor is recommended to replace the above deprecated constructor */
SQLServerColumnEncryptionAzureKeyVaultProvider akvProvider2 = new SQLServerColumnEncryptionAzureKeyVaultProvider(
tryAuthenticationCallback());
testAKV(akvProvider2.getName(), akvProvider2, connection, statement);
statement.execute("DBCC FREEPROCCACHE");
System.out.println("Create SQLServerColumnEncryptionAzureKeyVaultProvider with 'clientId' and 'clientKey'");
/* Constructor added in 6.2.2 driver version [Continued Support] */
SQLServerColumnEncryptionAzureKeyVaultProvider akvProvider3 = new SQLServerColumnEncryptionAzureKeyVaultProvider(
applicationClientID, applicationKey);
testAKV(akvProvider3.getName(), akvProvider3, connection, statement);
System.exit(0);
}
}
private static SQLServerKeyVaultAuthenticationCallback tryAuthenticationCallback()
throws URISyntaxException, SQLServerException {
SQLServerKeyVaultAuthenticationCallback authenticationCallback = new SQLServerKeyVaultAuthenticationCallback() {
@Override
public String getAccessToken(String authority, String resource,
String scope) {
AuthenticationResult result = null;
try {
ExecutorService service = Executors.newFixedThreadPool(1);
AuthenticationContext context = new AuthenticationContext(
authority, false, service);
ClientCredential cred = new ClientCredential(
applicationClientID, applicationKey);
Future<AuthenticationResult> future = context
.acquireToken(resource, cred, null);
result = future.get();
service.shutdown();
} catch (Exception e) {
e.printStackTrace();
}
return result.getAccessToken();
}
};
return authenticationCallback;
}
private static void testAKV(String CUSTOM_AKV_PROVIDER_NAME,
SQLServerColumnEncryptionKeyStoreProvider akvProvider,
Connection connection, Statement statement)
throws SQLException, InterruptedException {
dropTable(statement);
dropKeys(statement);
System.out.println("createCMK");
createCMK(CUSTOM_AKV_PROVIDER_NAME, statement);
System.out.println("createCEK");
createCEK(akvProvider, statement);
System.out.println("create Table");
statement.execute(createTableSQL);
System.out.println("populate");
populateCharNormalCase(connection);
System.out.println("run the test");
testChar(statement);
}
private static void setupKeyStoreProviders(String CUSTOM_AKV_PROVIDER_NAME,
SQLServerColumnEncryptionKeyStoreProvider akvProvider)
throws SQLServerException {
Map<String, SQLServerColumnEncryptionKeyStoreProvider> map1 = new HashMap<String, SQLServerColumnEncryptionKeyStoreProvider>();
map1.put(CUSTOM_AKV_PROVIDER_NAME, akvProvider);
SQLServerConnection.registerColumnEncryptionKeyStoreProviders(map1);
}
private static void dropTable(Statement statement) throws SQLException {
statement.executeUpdate("if object_id('" + akvTable
+ "','U') is not null" + " drop table " + akvTable);
}
private static void dropKeys(Statement statement) throws SQLException {
statement.executeUpdate(
"if exists (SELECT name from sys.column_encryption_keys where name='"
+ cekName + "')" + " begin"
+ " drop column encryption key " + cekName + " end");
statement.executeUpdate(
"if exists (SELECT name from sys.column_master_keys where name='"
+ cmkName + "')" + " begin" + " drop column master key "
+ cmkName + " end");
}
private static void createCMK(String CUSTOM_AKV_PROVIDER_NAME,
Statement statement) throws SQLException {
String _createColumnMasterKeyTemplate = String.format(
"CREATE COLUMN MASTER KEY [%s] WITH ( KEY_STORE_PROVIDER_NAME = '%s', KEY_PATH = '%s');",
cmkName, CUSTOM_AKV_PROVIDER_NAME, keyID);
statement.execute(_createColumnMasterKeyTemplate);
}
private static void createCEK(
SQLServerColumnEncryptionKeyStoreProvider storeProvider,
Statement statement) throws SQLServerException, SQLException {
String letters = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa";
byte[] valuesDefault = letters.getBytes();
byte[] key = storeProvider.encryptColumnEncryptionKey(keyID, "RSA_OAEP",
valuesDefault);
String cekSql = "CREATE COLUMN ENCRYPTION KEY " + cekName
+ " WITH VALUES " + "(COLUMN_MASTER_KEY = " + cmkName
+ ", ALGORITHM = 'RSA_OAEP', ENCRYPTED_VALUE = 0x"
+ bytesToHexString(key, key.length) + ")" + ";";
statement.execute(cekSql);
}
final static char[] hexChars = {'0', '1', '2', '3', '4', '5', '6', '7', '8',
'9', 'A', 'B', 'C', 'D', 'E', 'F'};
private static String bytesToHexString(byte[] b, int length) {
StringBuilder sb = new StringBuilder(length * 2);
for (int i = 0; i < length; i++) {
int hexVal = b[i] & 0xFF;
sb.append(hexChars[(hexVal & 0xF0) >> 4]);
sb.append(hexChars[(hexVal & 0x0F)]);
}
return sb.toString();
}
private static void populateCharNormalCase(Connection connection)
throws SQLException {
String sql = "insert into " + akvTable + " values(?,?,?)";
try (PreparedStatement pstmt = connection.prepareStatement(sql)) {
for (int i = 1; i <= 5; i++) { //Insert 5 rows
for (int j = 1; j <= 3; j++) {
pstmt.setNString(j, "Row " + i + " Column " + j);
}
pstmt.execute();
}
}
}
/**
* Rerieves the table
*
* @throws SQLException
*/
private static void testChar(Statement statement) throws SQLException {
try (ResultSet rs = statement
.executeQuery("select * from " + akvTable);) {
int numberOfColumns = rs.getMetaData().getColumnCount();
while (rs.next()) {
for (int i = 1; i <= numberOfColumns; i++) {
System.out.println(rs.getString(i));
}
}
}
}
}
関連項目
Azure Key Vault のサンプル版 9.2
Azure Key Vault のサンプル版 6.2.2
Azure Key Vault のサンプル版 6.0.0