Jmeter怎么使用RSA进行加密

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前言

在接口测试或者性能测试中，经常会遇到要对数据进行加密的情况。本文主要介绍的是利用RSA加密的情况。其中引用的加密代码来自互联网，不知是哪位大牛分享的，在此表示感谢！

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一、使用步骤

1.添加BeanShell预处理程序

2.编写脚本

代码如下：

import org.apache.commons.codec.binary.Base64;
import java.io.ByteArrayOutputStream;
import java.security.Key;
import java.security.KeyFactory;
import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.Signature;
import java.security.interfaces.RSAPrivateKey;
import java.security.interfaces.RSAPublicKey;
import java.security.spec.PKCS8EncodedKeySpec;
import java.security.spec.X509EncodedKeySpec;
import java.util.HashMap;
import java.util.Map;
import javax.crypto.Cipher;
import java.net.URLEncoder;
String RSA_PUB_KEY = props.get("pukey");//RSA加密的公钥
String KEY_ALGORITHM = "RSA";
String SIGNATURE_ALGORITHM = "MD5withRSA";
int MAX_ENCRYPT_BLOCK = 117;
int MAX_DECRYPT_BLOCK = 128;

public static byte[] decryptByPublicKey(byte[] encryptedData, String publicKey) throws Exception {
    
    
    byte[] keyBytes = Base64.decodeBase64(publicKey);
    X509EncodedKeySpec x509KeySpec = new X509EncodedKeySpec(keyBytes);
    KeyFactory keyFactory = KeyFactory.getInstance(KEY_ALGORITHM);
    Key publicK = keyFactory.generatePublic(x509KeySpec);
    Cipher cipher = Cipher.getInstance(keyFactory.getAlgorithm());
    cipher.init(Cipher.DECRYPT_MODE, publicK);
    int inputLen = encryptedData.length;
    ByteArrayOutputStream out = new ByteArrayOutputStream();
    int offSet = 0;
    byte[] cache;
    int i = 0;
    // 对数据分段解密
    while (inputLen - offSet > 0) {
    
    
        if (inputLen - offSet > MAX_DECRYPT_BLOCK) {
    
    
            cache = cipher.doFinal(encryptedData, offSet, MAX_DECRYPT_BLOCK);
        } else {
    
    
            cache = cipher.doFinal(encryptedData, offSet, inputLen - offSet);
        }
        out.write(cache, 0, cache.length);
        i++;
        offSet = i * MAX_DECRYPT_BLOCK;
    }
    byte[] decryptedData = out.toByteArray();
    out.close();
    return decryptedData;
}

public static byte[] encryptByPublicKey(byte[] data, String publicKey) throws Exception {
    
    
    byte[] keyBytes = Base64.decodeBase64(publicKey);
    X509EncodedKeySpec x509KeySpec = new X509EncodedKeySpec(keyBytes);
    KeyFactory keyFactory = KeyFactory.getInstance(KEY_ALGORITHM);
    Key publicK = keyFactory.generatePublic(x509KeySpec);
    // 对数据加密
    Cipher cipher = Cipher.getInstance(keyFactory.getAlgorithm());
    cipher.init(Cipher.ENCRYPT_MODE, publicK);
    int inputLen = data.length;
    ByteArrayOutputStream out = new ByteArrayOutputStream();
    int offSet = 0;
    byte[] cache;
    int i = 0;
    // 对数据分段加密
    while (inputLen - offSet > 0) {
    
    
        if (inputLen - offSet > MAX_ENCRYPT_BLOCK) {
    
    
            cache = cipher.doFinal(data, offSet, MAX_ENCRYPT_BLOCK);
        } else {
    
    
            cache = cipher.doFinal(data, offSet, inputLen - offSet);
        }
        out.write(cache, 0, cache.length);
        i++;
        offSet = i * MAX_ENCRYPT_BLOCK;
    }
    byte[] encryptedData = out.toByteArray();
    out.close();
    return encryptedData;
}

String str = "12345678";//这里设置为自己的密码
String result = "";

try {
    
    
    result = Base64.encodeBase64String(encryptByPublicKey(str.getBytes(), RSA_PUB_KEY));

    result1 = encryptByPublicKey(str.getBytes(), RSA_PUB_KEY);
    System.out.println(result);
} catch(Exception e) {
    
    
    // TODO Auto-generated catch block
    e.printStackTrace();
}

print(result);
vars.put("rsa_pwd", result);//rsa_pwd是jmeter脚本中引用的变量名
return result1;

 

代码解析：
1、第10行填写的是RSA的公钥

2、第81行填写的是需要加密的原始字符串，比如要对密码进行加密，这里就填写密码。

3、第95行代码，将加密后的字符串result存储为Jmeter的变量，方便在Jmeter中进行引用。

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总结

以上就是今天要讲的内容，本文仅仅简单介绍了在Jmeter中怎么使用RSA进行加密。