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我想加密通過Java/C#套接字(Java服務器,C#客戶端)發送的所有數據。 我想使用AES256,但我無法讓Java和C#生成相同的加密代碼。任何人都可以給我兩個例子,1在Java和1在C#中產生相同的結果,並正確地解密結果?C#/ Java | AES256加密/解密
我試了一下,到目前爲止:
public Encrypt(AOBCore instance){
try {
String message="This is just an example";
// Get the KeyGenerator
KeyGenerator kgen = KeyGenerator.getInstance("AES");
kgen.init(256); // 192 and 256 bits may not be available
// Generate the secret key specs.
SecretKey skey = kgen.generateKey(); //Cantget 'test' in here...
byte[] raw = skey.getEncoded();
SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");
// Instantiate the cipher
Cipher cipher = Cipher.getInstance("AES");
cipher.init(Cipher.ENCRYPT_MODE, skeySpec);
byte[] encrypted =
cipher.doFinal(message.getBytes());
System.out.println("encrypted string: " + asHex(encrypted));
cipher.init(Cipher.DECRYPT_MODE, skeySpec);
byte[] original =
cipher.doFinal(encrypted);
String originalString = new String(original);
System.out.println("Original string: " +
originalString + " " + asHex(original));
} catch (Exception e) {
instance.logMessage(e.getMessage());
}
}
public static String asHex (byte buf[]) {
StringBuffer strbuf = new StringBuffer(buf.length * 2);
int i;
for (i = 0; i < buf.length; i++) {
if (((int) buf[i] & 0xff) < 0x10)
strbuf.append("0");
strbuf.append(Long.toString((int) buf[i] & 0xff, 16));
}
return strbuf.toString();
}
}
static void Main(string[] args)
{
while (true)
{
var plain = Console.ReadLine();
var key = GenerateKey(256);
var encoded = Encrypt(plain, key, 256);
Console.WriteLine("Encoded: " + encoded);
Console.WriteLine(Decrypt(encoded, key, 256));
}
}
private static string GenerateKey(int keySize)
{
return "test";
}
private static string Encrypt(string plainStr, string completeEncodedKey, int keySize)
{
RijndaelManaged aesEncryption = new RijndaelManaged();
aesEncryption.KeySize = keySize;
aesEncryption.BlockSize = 256;
aesEncryption.Mode = CipherMode.CBC;
aesEncryption.Padding = PaddingMode.PKCS7;
aesEncryption.IV = Convert.FromBase64String(ASCIIEncoding.UTF8.GetString(Convert.FromBase64String(completeEncodedKey)).Split(',')[0]);
aesEncryption.Key = Convert.FromBase64String(ASCIIEncoding.UTF8.GetString(Convert.FromBase64String(completeEncodedKey)).Split(',')[1]);
byte[] plainText = ASCIIEncoding.UTF8.GetBytes(plainStr);
ICryptoTransform crypto = aesEncryption.CreateEncryptor();
// The result of the encryption and decryption
byte[] cipherText = crypto.TransformFinalBlock(plainText, 0, plainText.Length);
return Convert.ToBase64String(cipherText);
}
private static string Decrypt(string encryptedText, string completeEncodedKey, int keySize)
{
RijndaelManaged aesEncryption = new RijndaelManaged();
aesEncryption.KeySize = keySize;
aesEncryption.BlockSize = 128;
aesEncryption.Mode = CipherMode.CBC;
aesEncryption.Padding = PaddingMode.PKCS7;
aesEncryption.IV = Convert.FromBase64String(ASCIIEncoding.UTF8.GetString(Convert.FromBase64String(completeEncodedKey)).Split(',')[0]);
aesEncryption.Key = Convert.FromBase64String(ASCIIEncoding.UTF8.GetString(Convert.FromBase64String(completeEncodedKey)).Split(',')[1]);
ICryptoTransform decrypto = aesEncryption.CreateDecryptor();
byte[] encryptedBytes = Convert.FromBase64CharArray(encryptedText.ToCharArray(), 0, encryptedText.Length);
return ASCIIEncoding.UTF8.GetString(decrypto.TransformFinalBlock(encryptedBytes, 0, encryptedBytes.Length));
}
你應該展示你到目前爲止所嘗試過的 - 這不是一個代碼工廠,因特網提供了大量的例子。 – home 2012-03-06 13:01:24
添加了我嘗試過的...並且不,我在C#/ Java示例中找不到很多信息。 – Basaa 2012-03-06 13:05:51
看起來像你有同樣的問題http://stackoverflow.com/q/5295110/55209 – 2012-03-06 13:14:06