SoFunction
Updated on 2025-04-14

Steps to implement data encryption by integrating jasypt in SpringBoot

Hey! Hello everyone! In this information age, ensuring data security is really the top priority. As developers, each of us wants to protect those sensitive data, right? Today I will talk to you about how to integrate jasypt in SpringBoot to achieve data encryption and ensure that our information will not be targeted at will during storage and transmission.

Have you heard of jasypt? It is a super popular Java library, providing simple and efficient encryption and decryption interfaces. After integrating jasypt, our SpringBoot application can easily handle the encryption and decryption of sensitive data without having to worry about complex encryption algorithms! Next, let’s take a look at how to operate it step by step!

Step 1: Introducing jasypt dependencies

Let's first introduce the dependencies of jasypt. If you are using Maven to build the project, you canAdd the following line:

<dependency>
    <groupId></groupId>
    <artifactId>jasypt-spring-boot-starter</artifactId>
    <version>3.0.4</version>
</dependency>

Friends who use Gradle should not worry, the following method also applies:

implementation ':jasypt-spring-boot-starter:3.0.4'

Remember to change the version number to the latest one, it is very necessary to keep it updated!

Step 2: Configure the encryption password

Next, we need an encrypted password to get jasypt to work. This password can be placedorHowever, for safety reasons, it is recommended to store it in environment variables better.

For exampleThe configuration is as follows:

jasypt:
  encryptor:
    password: YOUR_SECRET_PASSWORD

If you want to be more secure, set the password as an environment variable and set it in the local environment like this:

export JASYPT_ENCRYPTOR_PASSWORD=YOUR_SECRET_PASSWORD

In this way, even if the code is disclosed, sensitive information will not be easily leaked. It is a great way!

Step 3: Encrypt the data

Encryption is now started! In SpringBoot, encrypting and decrypting data with jasypt is simply too simple. Let's take a specific example, suppose we have such a database connection string:

jdbc:mysql://localhost:3306/mydb?useSSL=false

We want to encrypt this connection string, which can be used to leverage the command line tools provided by jasypt. Just enter the following in the command line:

java -cp jasypt-1.9.  input="jdbc:mysql://localhost:3306/mydb?useSSL=false" password="YOUR_SECRET_PASSWORD"

After running, you can get an encrypted string, like this:

ENC(encrypted_string_here)

Put this string of encrypted strings into the configuration file and become:

spring:
  datasource:
    url: ENC(encrypted_string_here)

Step 4: Use the encrypted configuration

In Spring, jasypt will automatically recognizeENC(...)It is very convenient to decrypt the string in form and then help you decrypt it! We can use this data source setup directly in the code.

For example, take a look at the following simple one@ConfigurationClass, help configure database connection:

import ;
import ;
import ;
import ;
@Configuration
public class DataSourceConfig {
    @Bean
    public DataSource dataSource() {
        DriverManagerDataSource dataSource = new DriverManagerDataSource();
        // Automatically inject encrypted database connection configuration        (/* Inject variables from configuration file */);
        (/* Inject variables from configuration file */);
        (/* Inject variables from configuration file */);
        return dataSource;
    }
}

Isn't it very simple? In this way, we successfully implement secure encryption of database connection strings, ensuring that even data will not be easily obtained when the program is running.

Step 5: Encrypt business data

In addition to configuration items, we may also process some sensitive business data in the application, such as user passwords or personal information, and must also be encrypted. Then, we can pass jasypt in the service layerStringEncryptorCome and achieve it!

Simple, you can inject thisStringEncryptor：

import .AES256TextEncryptor;
import ;
import ;
@Service
public class UserService {
    @Autowired
    private StringEncryptor stringEncryptor;
    public String encryptData(String data) {
        return (data);
    }
    public String decryptData(String encryptedData) {
        return (encryptedData);
    }
}

When using this service to encrypt and decrypt user data, a sense of security comes with it! For example, we can handle it like this:

String originalPassword = "mySuperSecretPassword";
String encryptedPassword = (originalPassword);
("Encrypted Password: " + encryptedPassword);
String decryptedPassword = (encryptedPassword);
("Decrypted Password: " + decryptedPassword);

Very good! We can easily achieve encryption protection for user-sensitive information!

Tips

When integrating jasypt, there are some small details that need to be paid attention to:

  • Password control: Be sure to ensure that your encryption password is safe, so don’t hard-code it here.
  • Performance considerations: If the data volume is large, like ten thousand levels of data, encryption and decryption may affect performance. It is necessary to perform performance testing!
  • Algorithm selection:jasypt supports a variety of encryption algorithms, and choosing the right algorithm can better protect data.

Today, we will talk about this. I hope this article can help you, make you more skilled in handling data encryption in daily development, and let us work together to protect sensitive information! If you have any questions, please feel free to communicate!

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