[英]Java AES/CBC/PKCS5Padding in C#
I have been give Java encryption code that needs to be converted to C#.我一直给Java加密代码需要转换成C#。 I think I'm pretty close... but I'm not sure how to duplicate the IV calculation... any help?我想我已经很接近了……但我不确定如何复制 IV 计算……有什么帮助吗?
Java Code: Java 代码:
public static string getAESencodingResult(String sSrc, String encrypt_key)
{
Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
byte[] raw = encrypt_key.getBytes();
SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");
IvParameterSpec iv = new IvParameterSpec(encrypt_key.getBytes());
cipher.init(Cipher.ENCRYPT_MODE, skeySpec, iv);
byte[] encrypted = cipher.doFinal(sSrc.getBytes("utf-8"));
return new BASE64Encoder().encode(encrypted);
}
C# Code: C# 代码:
static string EncryptStringToBytes(string plainText, byte[] key)
{
byte[] encrypted;
using (RijndaelManaged rijAlg = new RijndaelManaged())
{
rijAlg.Key = key;
// rijAlg.IV = ???
rijAlg.GenerateIV();
rijAlg.Padding = PaddingMode.PKCS7;
rijAlg.Mode = CipherMode.CBC;
ICryptoTransform encryptor = rijAlg.CreateEncryptor(rijAlg.Key, rijAlg.IV);
using (MemoryStream msEncrypt = new MemoryStream())
using (CryptoStream csEncrypt = new CryptoStream(msEncrypt, encryptor, CryptoStreamMode.Write))
using (StreamWriter swEncrypt = new StreamWriter(csEncrypt))
{
swEncrypt.Write(plainText);
if (plainText.Length < 16)
{
for (int i = plainText.Length; i < 16; i++)
swEncrypt.Write((byte)0x0);
}
swEncrypt.Flush();
csEncrypt.FlushFinalBlock();
encrypted = msEncrypt.ToArray();
}
}
return Convert.ToBase64String(encrypted);
}
If I'm not misunderstanding the Java code, you simply need to assign the key value to the IV as well:如果我没有误解 Java 代码,您只需将键值也分配给 IV:
rijAlg.Key = key;
rijAlg.IV = key;
And remove the GenerateIV line:并删除 GenerateIV 行:
rijAlg.GenerateIV();
I understand that you're not in control of the Java code so you can't fix this, but for future readers: you shouldn't use the same IV every time you encrypt something.我了解您无法控制 Java 代码,因此您无法解决此问题,但对于未来的读者:您不应该每次加密时都使用相同的 IV。 See this question for more information.有关更多信息,请参阅此问题。
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.