Jasypt를 이용한 암호화

- application.yml

spring:
  datasource:
    driver-class-name: com.mysql.cj.jdbc.Driver
    url: jdbc:mysql://localhost:3306/testDb?serverTimezone=Asia/Seoul
    username: userName
    password: password

 

- application.properties

spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/testDb?serverTimezone=Asia/Seoul
spring.datasource.username=userName
spring.datasource.password=password

 

해당 부분은 DB의 정보의 그대로 노출되어 있어 보안상에 문제가 존재한다.

 

1. Dependency 추가

- build.gradle

implementation 'com.github.ulisesbocchio:jasypt-spring-boot-starter:3.0.4'

 

2. Config Class

2-1. 알고리즘 리스트

PBEWITHHMACSHA1ANDAES_128
PBEWITHHMACSHA1ANDAES_256

PBEWITHHMACSHA224ANDAES_128
PBEWITHHMACSHA224ANDAES_256

PBEWITHHMACSHA256ANDAES_128
PBEWITHHMACSHA256ANDAES_256

PBEWITHHMACSHA384ANDAES_128
PBEWITHHMACSHA384ANDAES_256

PBEWITHHMACSHA512ANDAES_128
PBEWITHHMACSHA512ANDAES_256

PBEWITHMD5ANDDES

PBEWITHMD5ANDTRIPLEDES

PBEWITHSHA1ANDDESEDE

PBEWITHSHA1ANDRC2_128
PBEWITHSHA1ANDRC2_40

PBEWITHSHA1ANDRC4_128
PBEWITHSHA1ANDRC4_40

2-2. JasyptConfig 클래스 추가

jasypt:
  encryptor:
    algorithm: ~
    key-obtention-iterations: ~
    pool-size: ~
    bean: jasyptStringEncryptor

@Configuration
@EnableEncryptableProperties
public class JasyptConfig {
    @Value("${jasypt.encryptor.algorithm}")
    private String algorithm;

    @Value("${jasypt.encryptor.key-obtention-iterations}")
    private int keyObtentionIterations;

    @Value("${jasypt.encryptor.pool-size}")
    private int poolSize;

    @Value("${jasypt.encryptor.password}")
    private String password;

    @Bean("jasyptStringEncryptor")
    public PooledPBEStringEncryptor stringEncryptor() {
        PooledPBEStringEncryptor encryptor = new PooledPBEStringEncryptor();
        encryptor.setProvider(new BouncyCastleProvider());
        encryptor.setAlgorithm(algorithm);
        encryptor.setKeyObtentionIterations(keyObtentionIterations);
        encryptor.setPoolSize(poolSize);
        encryptor.setPassword(password);
        return encryptor;
    }
}

3. Test

public class JasyptConfigTest {
    public String jasyptEncrypt(String input) {
        PooledPBEStringEncryptor encryptor = new PooledPBEStringEncryptor();
        encryptor.setProvider(new BouncyCastleProvider());
        encryptor.setKeyObtentionIterations(keyObtentionIterations);
        encryptor.setPoolSize(poolSize);
        encryptor.setPassword(password);
        encryptor.setAlgorithm(algorithm);
        return encryptor.encrypt(input);
    }
    
    @Test
    public void jasypt() {
        String encryptDBurl = jasyptEncrypt(DBurl);
        String encryptDBid = jasyptEncrypt(DBid);
        String encryptDBpwd = jasyptEncrypt(DBpwd);

        System.out.println("\n========================PBKDF2Encryptor========================\n");
        System.out.println("encryptDBurl\nENC(" + encryptDBurl + ")\n");
        System.out.println("encryptDBid\nENC(" + encryptDBid + ")\n");
        System.out.println("encryptDBpwd\nENC(" + encryptDBpwd + ")\n");
    }
}

4. DONE

4-1. 콘솔에 찍힌 값으로 DB 설정값으로 대체

4-2. VM OPTIONS에 다음 값을 추가 -Djasypt.encryptor.password=~~

4-3. 배포 시 : java -jar -Djasypt.encryptor.password=~~