Microservice data encryption and decryption tool written in Java

Microservice data encryption and decryption tool written in Java

With the development of the Internet, microservice architecture has become a popular application architecture model. In a microservices architecture, communication and data security are very important considerations. In order to protect the confidentiality of sensitive data, we need to perform encryption and decryption operations on the data. In this article, I will introduce a microservice data encryption and decryption tool written in Java.

This tool uses the AES (Advanced Encryption Standard) algorithm for data encryption and decryption. The AES algorithm is a symmetric encryption algorithm that is widely used for data protection and secure transmission. Below is sample code to demonstrate the process of data encryption and decryption using this tool.

The code for the encryption part is as follows:

import javax.crypto.Cipher;
import javax.crypto.spec.SecretKeySpec;
import java.nio.charset.StandardCharsets;
import java.util.Base64;

public class DataEncryptor {

    private static final String KEY = "1234567890abcdef"; // 密钥，可以自定义

    public static String encrypt(String data) throws Exception {
        Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
        SecretKeySpec secretKeySpec = new SecretKeySpec(KEY.getBytes(StandardCharsets.UTF_8), "AES");
        cipher.init(Cipher.ENCRYPT_MODE, secretKeySpec);
        byte[] encryptedData = cipher.doFinal(data.getBytes(StandardCharsets.UTF_8));
        return Base64.getEncoder().encodeToString(encryptedData);
    }
}

The code for the decryption part is as follows:

import javax.crypto.Cipher;
import javax.crypto.spec.SecretKeySpec;
import java.nio.charset.StandardCharsets;
import java.util.Base64;

public class DataDecryptor {

    private static final String KEY = "1234567890abcdef"; // 密钥，与加密部分保持一致

    public static String decrypt(String encryptedData) throws Exception {
        Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
        SecretKeySpec secretKeySpec = new SecretKeySpec(KEY.getBytes(StandardCharsets.UTF_8), "AES");
        cipher.init(Cipher.DECRYPT_MODE, secretKeySpec);
        byte[] decryptedData = cipher.doFinal(Base64.getDecoder().decode(encryptedData));
        return new String(decryptedData, StandardCharsets.UTF_8);
    }
}

In practical applications, we can encapsulate the above code into a tool class And implement data encryption and decryption by calling methods.

The sample code for using this tool to encrypt and decrypt data is as follows:

public class Main {

    public static void main(String[] args) {
        try {
            String originalData = "Hello, World!"; // 待加密的数据
            String encryptedData = DataEncryptor.encrypt(originalData);
            System.out.println("加密后的数据：" + encryptedData);

            String decryptedData = DataDecryptor.decrypt(encryptedData);
            System.out.println("解密后的数据：" + decryptedData);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

In the above sample code, we first define a data to be encryptedHello, World! , then call the DataEncryptor.encrypt() method to encrypt, and then print the encrypted data. Then call the DataDecryptor.decrypt() method to decrypt, and then print the decrypted data.

Using this tool for data encryption and decryption can effectively protect the security and confidentiality of sensitive data and plays an important role in the microservice architecture. Of course, in practical applications, we also need to choose appropriate encryption algorithms and key management methods based on specific needs and environments.

In summary, this article introduces a microservice data encryption and decryption tool written in Java and gives corresponding code examples. With this tool, we can easily encrypt and decrypt sensitive data to ensure data security and confidentiality. I hope this article will help you with data protection in microservice development.

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