C#与Node JS互相实现DES加密解密

 1 using System;
 2 using System.ComponentModel;
 3 using System.Security.Cryptography;
 4 using System.Text;
 5 
 6 namespace Hello
 7 {
 8     class HelloWorld
 9     {
10         //默认的加密密钥，不得少于8位，否则会报错
11         private static readonly string key = "password";
12 
13         static void Main(string[] args)
14         {
15             String text = HelloWorld.EncryptString("plaintext", key);
16             string decy = HelloWorld.DecryptString("9M2Z9AqQqdfoURRguzzSAA==", key);
17             Console.WriteLine(text);
18             Console.WriteLine(decy);
19         }
20 
21         //解密算法
22         public static string DecryptString(string decryptString, string decryptKey)
23         {
24             try
25             {
26                 
27                 byte[] rgbKey = Encoding.UTF8.GetBytes(decryptKey.Substring(0, 8));
28                  //初始化偏移向量，因为第一个明文分组没有前一组密文进行异或，所以这里是要有一个初始化向量的 
29                 byte[] rgbIV = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF };
30                 byte[] inputByteArray = Convert.FromBase64String(decryptString);
31                 using DESCryptoServiceProvider DCSP = new();
32                 MemoryStream mStream = new MemoryStream();
33                 CryptoStream cStream = new CryptoStream(mStream, DCSP.CreateDecryptor(rgbKey, rgbIV), CryptoStreamMode.Write);
34                 cStream.Write(inputByteArray, 0, inputByteArray.Length);
35                 cStream.FlushFinalBlock();
36                 return Encoding.UTF8.GetString(mStream.ToArray());
37             }
38             catch
39             {
40                 return decryptString;
41             }
42         }
43 
44         //加密算法
45         public static string EncryptString(string encryptString, string encryptKey)
46         {
47             try
48             {
49                 byte[] rgbKey = Encoding.UTF8.GetBytes(encryptKey.Substring(0, 8));
50                 byte[] rgbIV = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF };
51                 byte[] inputByteArray = Encoding.UTF8.GetBytes(encryptString);
52                 using DESCryptoServiceProvider DCSP = new();
53                 MemoryStream mStream = new MemoryStream();
54                 CryptoStream cStream = new CryptoStream(mStream, DCSP.CreateEncryptor(rgbKey, rgbIV), CryptoStreamMode.Write);
55                 cStream.Write(inputByteArray, 0, inputByteArray.Length);
56                 cStream.FlushFinalBlock();
57                 return Convert.ToBase64String(mStream.ToArray());
58             }
59             catch
60             {
61                 return encryptString;
62             }
63         }
64     }
65 }   

 1 const key = 'password'
 2 const arr = [0x12, 0x34, 0x56, 0x78, 0x90, 0xab, 0xcd, 0xef]
 3 const iv = Buffer.from(arr)
 4 
 5 /**
 6  * des-cbc加密函数
 7  * @param plaintext 原文
 8  * @param alg 加密方式，这里统一用cbc加密
 9  * @returns {string} 密文
10  */
11 function encrypt(plaintext, alg) {
12     //创建加密对象，参数为
13     //加密方式(string)， 密钥(string)， 初始向量(ArrayBuffer,二进制数组)
14     let cipher = crypto.createCipheriv(alg, key, iv);
15 
16     //自动填充，否则输入长度不为密码块的倍数时会报错
17     cipher.setAutoPadding(true);
18 
19     //用加密对象进行加密，参数为
20     //data: 原始数据，一般为string，其他类型则忽略输入类型
21     //inputencoding: 数据的输入编码方式，这里转换为unicode
22     //outputencoding: 数据的输出编码方式，这里是用base64，其特点是存在非3倍数时末尾会出现'='
23     //return：返回加密密文，类型为string
24     let ciph = cipher.update(plaintext, 'utf8', 'base64');
25 
26     //将剩余内容全部进行加密并返回总结果，因为上面的一次只能加密部分数据
27     ciph += cipher.final('base64')
28     return ciph
29 }
30 
31 /**
32  * des-cbc解密数据
33  * @param ciphertext 密文
34  * @param alg 解密方式
35  * @returns {string} 原文
36  */
37 function decrypt(ciphertext, alg) {
38     //解码失败则返回空，因为有些早期数据没有密码
39     if(!ciphertext) return ''
40     let dcipher = crypto.createDecipheriv(alg, key, iv);
41     dcipher.setAutoPadding(true);
42     let ciph = dcipher.update(ciphertext, 'base64', 'utf8');
43     ciph += dcipher.final('utf8')
44     return ciph
45 }

//调用

console.log(encrypt('plaintext', 'des-cbc'))
console.log(decrypt('9M2Z9AqQqdfoURRguzzSAA==', 'des-cbc'))