我有一个使用案例,需要使用AES 256算法对文本进行编码并发送。客户端代码是用C#编写的,将解密该代码。
JS中的加密代码:
const crypto = require('crypto');
algorithm = 'aes-256-cbc',
secret = '1234567890123456',
keystring = crypto.createHash('sha256').update(String(secret)).digest('base64').substr(0, 16);
iv = crypto.createHash('sha256').update(String(secret)).digest('base64').substr(0, 16);
inputEncoding = 'utf8',
outputEncoding = 'base64';
function encrypt(text) {
let cipher = crypto.createCipheriv('aes-256-cbc', keystring, iv);
let encrypted = cipher.update(text, inputEncoding, outputEncoding)
encrypted += cipher.final(outputEncoding);
return encrypted;
}
客户端使用的代码已更新:
var keybytes = Encoding.UTF8.GetBytes(passwordKey);
var iv = Encoding.UTF8.GetBytes(passwordKey);
private byte[] EncryptStringToBytes(string plainText, byte[] key, byte[] iv)
{
try
{
// Check arguments.
if (plainText == null || plainText.Length <= 0)
{
throw new ArgumentNullException("plainText");
}
if (key == null || key.Length <= 0)
{
throw new ArgumentNullException("key");
}
if (iv == null || iv.Length <= 0)
{
throw new ArgumentNullException("key");
}
byte[] encrypted;
// Create a RijndaelManaged object
// with the specified key and IV.
using (var rijAlg = new RijndaelManaged())
{
rijAlg.Mode = CipherMode.CBC;
rijAlg.Padding = PaddingMode.PKCS7;
rijAlg.FeedbackSize = 128;
rijAlg.Key = key;
rijAlg.IV = iv;
// Create a decrytor to perform the stream transform.
var encryptor = rijAlg.CreateEncryptor(rijAlg.Key, rijAlg.IV);
// Create the streams used for encryption.
using (var msEncrypt = new MemoryStream())
{
using (var csEncrypt = new CryptoStream(msEncrypt, encryptor, CryptoStreamMode.Write))
{
using (var swEncrypt = new StreamWriter(csEncrypt))
{
//Write all data to the stream.
swEncrypt.Write(plainText);
}
encrypted = msEncrypt.ToArray();
}
}
}
// Return the encrypted bytes from the memory stream.
return encrypted;
}
catch (Exception ex)
{
throw ex;
//LoggerCS.logError("Utility", "EncryptStringToBytes", JsonConvert.SerializeObject(null), ex.ToString(), ex.StackTrace);
}
return null;
}
在C#中使用的keyString和IV值相同,并使用Utf8进行加密。想要在Node JS中找到相应的操作。