Spring
데이터 암호화를 위한 JPA Attribute Converter
jayden-lee
2019. 6. 10. 18:09
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User 클래스에서 juminNumber 속성 값을 테이블에 저장할 때 암호화하는 예제입니다.
User Entity 생성
@Entity
@Table(name = "USER")
@DynamicInsert
@DynamicUpdate
@Getter
public class User {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Long id;
@Column(name = "NAME", length = 50, nullable = false)
private String name;
@Column(name = "JUMIN_NUMBER", length = 100, nullable = false)
@Convert(converter = StringCryptoConverter.class)
private String juminNumber;
...
}StringCryptoConverter 생성
@Convert
public class StringCryptoConverter implements AttributeConverter<String, String> {
private static final String ALGORITHM = "AES/ECB/PKCS5Padding";
private static final byte[] KEY = "lelecoder".getBytes();
@Override
public String convertToDatabaseColumn(String attribute) {
Key key = new SecretKeySpec(KEY, "AES");
try {
Cipher cipher = Cipher.getInstance(ALGORITHM);
cipher.init(Cipher.ENCRYPT_MODE, key);
return new String(Base64.getEncoder().encode(cipher.doFinal(attribute.getBytes())));
} catch (Exception e) {
throw new RuntimeException(e);
}
}
@Override
public String convertToEntityAttribute(String dbData) {
Key key = new SecretKeySpec(KEY, "AES");
try {
Cipher cipher = Cipher.getInstance(ALGORITHM);
cipher.init(Cipher.DECRYPT_MODE, key);
return new String(cipher.doFinal(Base64.getDecoder().decode(dbData)));
} catch (Exception e) {
throw new RuntimeException(e);
}
}
}