springboot中增强druid实现数据库账号密码加解密

       针对目前越来越严的安全等级要求，我们在做产品研发和项目开发时，越来越需要注意安全问题，各种账号密码的在配置文件中明文存储就是一个很大的安全隐患。

        现针对数据库密码加解密方面，利用druid工具类进行数据库加密，实现项目配置文件中数据库密码密文存储，一定程度上保证了数据安全。

        步骤一：pom中引入druid依赖

<!-- druid数据源驱动 -->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid-spring-boot-starter</artifactId>
            <version>1.1.17</version>
        </dependency>

        步骤二：添加druid的filter

package com.huatech.cloud.filter;

import java.security.PublicKey;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;

import com.alibaba.druid.filter.FilterAdapter;
import com.alibaba.druid.filter.config.ConfigTools;
import com.alibaba.druid.pool.DruidDataSource;
import com.alibaba.druid.proxy.jdbc.DataSourceProxy;

import lombok.extern.slf4j.Slf4j;

@Slf4j
@Component
public class DruidDataSourceFilter extends FilterAdapter {
    
	
    @Value("${crypto.public-key}")
    private String decryptKey;
	
    @Override
    public void init(DataSourceProxy dataSourceProxy) {
		if (!(dataSourceProxy instanceof DruidDataSource)) {
            log.error("ConfigLoader only support DruidDataSource");
            return;
        }

        DruidDataSource dataSource = (DruidDataSource) dataSourceProxy;
        // 判断是否需要解密，如果需要就进行解密行动
        if (isNotEmpty(decryptKey)) {
            decrypt(dataSource);
        }
    }
	
    public void decrypt(DruidDataSource dataSource) {

        try {
            String encryptedUsername = null, encryptedPassword = null;
           
            if (encryptedUsername == null || encryptedUsername.length() == 0) {
            	encryptedUsername = dataSource.getUsername();
            }
            
            if (encryptedPassword == null || encryptedPassword.length() == 0) {
                encryptedPassword = dataSource.getPassword();
            }

            PublicKey publicKey =  ConfigTools.getPublicKey(decryptKey);

            String usernamePlainText = ConfigTools.decrypt(publicKey, encryptedUsername);
            String passwordPlainText = ConfigTools.decrypt(publicKey, encryptedPassword);

            dataSource.setUsername(usernamePlainText);
            dataSource.setPassword(passwordPlainText);
            
        } catch (Exception e) {
            throw new IllegalArgumentException("Failed to decrypt.", e);
        }
    }
    
    public boolean isNotEmpty(String source) {
    	return source != null && !"".equals(source.trim());
    }
	
}

        步骤三：通过Druid的ConfigTools工具类生成秘钥对，最后一个参数为待加密内容

java -cp druid-1.1.17.jar com.alibaba.druid.filter.config.ConfigTools abc
privateKey:MIIBVAIBADANBgkqhkiG9w0BAQEFAASCAT4wggE6AgEAAkEAlL2KkAHx1etX6V/A8JrTmLtvd4H/3yectN0RdkEro2z/ItPNdt/gP7W1PTOusSUrD/N4EVbMWNwaUrzBbRYwgwIDAQABAkB9DY693KSyshdLgtH4eHOGabAhzg6OVAOQnHzd65UA5I6sD1ehGT3jjLvNFovenOpzGY0TeYoIonWTlzIb/NJhAiEAyMU9C6l89KIVOiShC/XPEXgj1LtEO4ik/ZlJ6GNbye8CIQC9qDbmctuX8fNeyJMdSluwXjyUNCmVsOE0cnijY37mrQIgTbnudEFdmufVB/l+T78ON1knpggJ1nKETZm2vz0YIAkCIFphz8gC9KN0qoaBD5rl1Mw4HKaENU0g/jIAW32B7PgBAiEAooZbdtng4IrLw47/5SDWiunYrC2BHR59rApQnKkia1A=
publicKey:MFwwDQYJKoZIhvcNAQEBBQADSwAwSAJBAJS9ipAB8dXrV+lfwPCa05i7b3eB/98nnLTdEXZBK6Ns/yLTzXbf4D+1tT0zrrElKw/zeBFWzFjcGlK8wW0WMIMCAwEAAQ==
password:N9Noez2waEtPZSjc6UI2v3wZVaORBX5JPPZsL4IxUlFCa49wIhGZF71c3hV6z6Gm3s8MvMk0ief5rWdr5+p63g==

        步骤四：application.yml中配置数据源信息和秘钥对公钥

#配置数据源
spring:
  datasource:
    druid:
      type: com.alibaba.druid.pool.DruidDataSource
      driverClassName: com.mysql.cj.jdbc.Driver
      url: jdbc:mysql://localhost:3306/weapp-mall?serverTimezone=Asia/Shanghai&characterEncoding=utf8&useSSL=false&useAffectedRows=true
      username: N9Noez2waEtPZSjc6UI2v3wZVaORBX5JPPZsL4IxUlFCa49wIhGZF71c3hV6z6Gm3s8MvMk0ief5rWdr5+p63g==

password: N9Noez2waEtPZSjc6UI2v3wZVaORBX5JPPZsL4IxUlFCa49wIhGZF71c3hV6z6Gm3s8MvMk0ief5rWdr5+p63g==
# rsa算法加解密配置，配置公钥
crypto: 
  public-key: MFwwDQYJKoZIhvcNAQEBBQADSwAwSAJBAJS9ipAB8dXrV+lfwPCa05i7b3eB/98nnLTdEXZBK6Ns/yLTzXbf4D+1tT0zrrElKw/zeBFWzFjcGlK8wW0WMIMCAwEAAQ==

         如果觉得RSA加密算法太过复杂，可以使用jasypt工具类来加解密，具体操作如下。

        STEP1：pom.xml中添加依赖

<!-- druid数据源驱动 -->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid-spring-boot-starter</artifactId>
            <version>1.1.17</version>
        </dependency>
        <!-- jasypt -->
        <dependency>
            <groupId>org.jasypt</groupId>
            <artifactId>jasypt</artifactId>
            <version>${jasypt.version}</version>
        </dependency>

        STEP2：引入加解密工具类EncryptorTools

package com.huatech.cloud.config;

import org.jasypt.encryption.StringEncryptor;
import org.jasypt.encryption.pbe.StandardPBEStringEncryptor;
import org.jasypt.encryption.pbe.config.EnvironmentPBEConfig;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.Ordered;

@Configuration
public class EncryptorTools implements Ordered {
	
	@Value("${encryptor.password}")
	private String password;
			
	@ConditionalOnProperty(name = "encryptor.enable", havingValue = "true", matchIfMissing = true)
	@Bean
	public StringEncryptor stringEncryptor() {
		StandardPBEStringEncryptor standardPBEStringEncryptor = new StandardPBEStringEncryptor();
		EnvironmentPBEConfig config = new EnvironmentPBEConfig();
		config.setPassword(password);                
		standardPBEStringEncryptor.setConfig(config);
		return standardPBEStringEncryptor;
	}
	
	public static String decrypt(StringEncryptor stringEncryptor, final String encodedValue) {
		if(stringEncryptor != null) {
			try {
    			return stringEncryptor.decrypt(encodedValue);
    		}catch(Exception e) {
    			return encodedValue;
    		}
		}else {
			return encodedValue;
		}
	}
	
    public static String encrypt(StringEncryptor stringEncryptor, final String plainVaue) {
    	if(stringEncryptor != null) {
    		try {
    			return stringEncryptor.encrypt(plainVaue);
    		}catch(Exception e) {
    			return plainVaue;
    		}
    	}else {
    		return plainVaue;
    	}
    }
    
    public static String encrypt(String password, String plainText){
        StandardPBEStringEncryptor stringEncryptor = new StandardPBEStringEncryptor();
		EnvironmentPBEConfig config = new EnvironmentPBEConfig();
		config.setPassword(password);                
		stringEncryptor.setConfig(config);
        return stringEncryptor.encrypt(plainText);
	}
    
    public static void main(String[] args) {
		System.out.println(encrypt("rdc", "root"));
	}

	@Override
	public int getOrder() {
		return 0;
	}

}

        STEP3：添加druid的filterJasyptDataSourceFilter

package com.huatech.cloud.filter;

import org.jasypt.encryption.StringEncryptor;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import com.alibaba.druid.filter.FilterAdapter;
import com.alibaba.druid.pool.DruidDataSource;
import com.alibaba.druid.proxy.jdbc.DataSourceProxy;
import com.huatech.cloud.config.EncryptorTools;

import lombok.extern.slf4j.Slf4j;

@Slf4j
@Component
public class JasyptDataSourceFilter extends FilterAdapter {
    
	@Autowired(required = false)
	private StringEncryptor stringEncryptor;
	 
	@Override
    public void init(DataSourceProxy dataSourceProxy) {
		if (!(dataSourceProxy instanceof DruidDataSource)) {
            log.error("ConfigLoader only support DruidDataSource");
            return;
        }

        DruidDataSource dataSource = (DruidDataSource) dataSourceProxy;
        // 判断是否需要解密，如果需要就进行解密行动
        dataSource.setUsername(decrypt(dataSource.getUsername()));
        dataSource.setPassword(decrypt(dataSource.getPassword()));
    }
	

	public String decrypt(String ecryptValue) {
		return EncryptorTools.decrypt(stringEncryptor, ecryptValue);
	}
	
}

        STEP4：application.yml中配置数据源信息和加解密密码信息

# jasypt加解密配置
encryptor: 
  enable: true
  password: rdc  
#配置数据源
spring:
  datasource:
    druid:
      type: com.alibaba.druid.pool.DruidDataSource
      driverClassName: com.mysql.cj.jdbc.Driver
      url: jdbc:mysql://localhost:3306/weapp-mall?serverTimezone=Asia/Shanghai&characterEncoding=utf8&useSSL=false&useAffectedRows=true
      username: 8rYwAh2Qj7E7iqLB7S3QOg==
      password: 8rYwAh2Qj7E7iqLB7S3QOg==

 本文相关代码已上传至gitee