Java 实现 加盐 加密和解密

使用Spring Boot创建的项目

1. 首先pom文件

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.3.2.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    
    <!-- 这里的起名字，写自己的项目名包名啥的，创建项目的时候会自动生成，不用和这里的一样 -->
    <groupId>zhongguo.sunyongchao</groupId>
    
    <artifactId>demo</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>demo</name>
    <description>demo</description>
    
    <properties>
        <java.version>1.8</java.version>
    </properties>
    
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>

        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-boot-starter</artifactId>
            <version>3.1.0</version>
        </dependency>

        <!-- 加密依赖 重要的依赖写三遍注释-->
        <!-- 加密依赖 -->
        <!-- 加密依赖 -->
        <dependency>
            <groupId>com.github.ulisesbocchio</groupId>
            <artifactId>jasypt-spring-boot-starter</artifactId>
            <version>3.0.3</version>
        </dependency>

    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <excludes>
                        <exclude>
                            <groupId>org.projectlombok</groupId>
                            <artifactId>lombok</artifactId>
                        </exclude>
                    </excludes>
                </configuration>
            </plugin>
        </plugins>
    </build>

</project>

2. JasyptUtil工具类

import org.jasypt.encryption.pbe.PooledPBEStringEncryptor;
import org.jasypt.encryption.pbe.config.SimpleStringPBEConfig;

/**
 * @author 孙永潮
 * @date 2022/9/6
 */
public class JasyptUtil {
    /**
     * Jasypt生成加密结果
     *
     * @param password 配置文件中设定的加密盐值
     * @param value    加密值
     * @return
     */
    public static String encyptPwd(String password, String value) {
        PooledPBEStringEncryptor encryptor = new PooledPBEStringEncryptor();
        encryptor.setConfig(cryPTor(password));
        String result = encryptor.encrypt(value);
        return result;
    }

    /**
     * 解密
     *
     * @param password 配置文件中设定的加密盐值
     * @param value    解密密文
     * @return
     */
    public static String decyptPwd(String password, String value) {
        PooledPBEStringEncryptor encryptor = new PooledPBEStringEncryptor();
        encryptor.setConfig(cryPTor(password));
        String result = encryptor.decrypt(value);
        return result;
    }

    public static SimpleStringPBEConfig cryPTor(String password) {
        SimpleStringPBEConfig config = new SimpleStringPBEConfig();
        config.setPassword(password);
        config.setAlgorithm("PBEWithMD5AndDES");
        config.setKeyObtentionIterations("1000");
        config.setPoolSize("1");
        config.setProviderName("SunJCE");
        config.setSaltGeneratorClassName("org.jasypt.salt.RandomSaltGenerator");
        config.setStringOutputType("base64");
        return config;
    }
}

3. JasyptTest测试类

import cn.tedu.util.JasyptUtil;
import lombok.extern.slf4j.Slf4j;
import org.junit.jupiter.api.Test;

/**
 * @author 孙永潮
 * @date 2022/9/6
 */
@Slf4j
public class JasyptTest {
    //盐
    private static final String SALT = "^&gas.com";
    /**
     * 测试加密解密
     */
    @Test
    void testJasypt() {
        // 加密（第一个参数是 “盐”，第二个参数是 密码）
        String encPwd = JasyptUtil.encyptPwd(SALT, "#$!QAZ2qwe^&*");
        log.info("加密后的值为：{}", encPwd);

        // 解密
        String decPwd = JasyptUtil.decyptPwd(SALT, encPwd);
        log.info("解密后的值为：{}", decPwd);
    }
}

2022年9月第一次听盖哥的《威远故事》，感触颇为深刻，泪流满面，我也要过好 自己余生的岁月。