[英]Java equivalent of C# DESCrypto
我在C#和Java中具有DESCrypto,如下所示。 使用C#時,我得到正確的結果。 使用Java時出現問題。 如何解決這個問題?
//這在主函數中,它將在安全性類(C#)中調用crypto函數。
private void button1_Click(object sender, EventArgs e)
{
string plainText = "0123456789";
Debug.WriteLine("plainText:" + plainText );
// plainText:0123456789
byte[] encrypted = Security.Encrypt(Encoding.ASCII.GetBytes(plainText));
Debug.WriteLine("encrypted:" + Security.GetString(encrypted));
// encrypted:4F792B474936462B6A4F62635A6142464D54782F4E413D3D
byte[] decrypted = Security.Decrypt(encrypted);
Debug.WriteLine("decrypted:" + Encoding.ASCII.GetString(decrypted)); //
// decrypted:0123456789
}
//這是一個安全類(C#)
public class Security
{
private static byte[] IV_64 = new byte[] { 0, 0, 0, 0, 0, 0, 0, 0 };
private static byte[] KEY_64 = new byte[] { 7, 1, 7, 7, 5, 5, 4, 7 };
public static byte[] GetBytes(string value)
{
SoapHexBinary shb = SoapHexBinary.Parse(value);
return shb.Value;
}
public static string GetString(byte[] value)
{
SoapHexBinary shb = new SoapHexBinary(value);
return shb.ToString();
}
public static byte[] Decrypt(byte[] value)
{
MemoryStream mstream = new MemoryStream(Convert.FromBase64String(Encoding.ASCII.GetString(value)));
CryptoStream cstream = new CryptoStream(mstream, new DESCryptoServiceProvider().CreateDecryptor(KEY_64, IV_64), CryptoStreamMode.Read);
StreamReader reader = new StreamReader(cstream);
return Encoding.ASCII.GetBytes(reader.ReadToEnd());
}
public static byte[] Encrypt(byte[] value)
{
MemoryStream mstream = new MemoryStream();
CryptoStream cstream = new CryptoStream(mstream, new DESCryptoServiceProvider().CreateEncryptor(KEY_64, IV_64), CryptoStreamMode.Write);
StreamWriter writer = new StreamWriter(cstream);
writer.Write(Encoding.UTF8.GetString(value));
writer.Flush();
cstream.FlushFinalBlock();
mstream.Flush();
return Encoding ASCII.GetBytes(Convert.ToBase64String(mstream.GetBuffer(), 0, Convert.ToInt32(mstream.Length)));
}
}
//這在主要函數中,它將在安全性類(Java)中調用crypto函數。
String plainText = "0123456789";
Log.d("test", String.format("plainText:%s\n", plainText));
// plainText:0123456789
byte[] encrypted = Security.Encrypt(plainText.getBytes());
Log.d("test", String.format("encrypted:%s\n", Security.GetString(encrypted)));
// encrypted:3B2F8623A17E8CE6DC65A045313C7F34
byte[] decrypted = Security.Decrypt(encrypted);
Log.d("test", String.format("decrypted: %s\n", String.valueOf(decrypted)));
// decrypted:[B@6801b34
//這是安全類(JAVA)
import java.security.InvalidAlgorithmParameterException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;
public class Security {
private static byte[] IV_64 = new byte[] { 0, 0, 0, 0, 0, 0, 0, 0 };
private static byte[] KEY_64 = new byte[] { 7, 1, 7, 7, 5, 5, 4, 7 };
private static String KEY_TYPE = "DES";
private static String ALGORITHM = "DES/CBC/PKCS5Padding";
public static String GetString(byte[] value) {
StringBuilder builder = new StringBuilder();
for (byte i : value) {
builder.append(String.format("%02X", i & 0xff));
}
return builder.toString();
}
public static byte[] GetByte(String value) {
StringBuilder builder = new StringBuilder();
for (char i : value.toCharArray()) {
builder.append(String.format("%02X", i & 0xff));
}
return String.valueOf(builder).getBytes();
}
public static byte[] Encrypt(byte[] value) {
try {
Cipher cipher = Cipher.getInstance(ALGORITHM);
cipher.init(Cipher.ENCRYPT_MODE, new SecretKeySpec(KEY_64, KEY_TYPE), new IvParameterSpec(IV_64));
return cipher.doFinal(value);
} catch (InvalidKeyException e) {
e.printStackTrace();
} catch (InvalidAlgorithmParameterException e) {
e.printStackTrace();
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
} catch (NoSuchPaddingException e) {
e.printStackTrace();
} catch (BadPaddingException e) {
e.printStackTrace();
} catch (IllegalBlockSizeException e) {
e.printStackTrace();
}
return null;
}
public static byte[] Decrypt(byte[] value) {
try {
Cipher cipher = Cipher.getInstance(ALGORITHM);
cipher.init(Cipher.DECRYPT_MODE, new SecretKeySpec(KEY_64, KEY_TYPE), new IvParameterSpec(IV_64));
return cipher.doFinal(value);
} catch (InvalidKeyException e) {
e.printStackTrace();
} catch (InvalidAlgorithmParameterException e) {
e.printStackTrace();
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
} catch (NoSuchPaddingException e) {
e.printStackTrace();
} catch (BadPaddingException e) {
e.printStackTrace();
} catch (IllegalBlockSizeException e) {
e.printStackTrace();
}
return null;
}
}
在Java中,當plainText = "0123456789"
,加密的預期輸出為4F792B474936462B6A4F62635A6142464D54782F4E413D3D(類似於C#),但得到3B2F8623A17E8CE6DC65A045313C7F34。
在C#中,您使用Security
類內部的Base64編碼密文,然后使用其外部的Hex再次對其進行編碼。 在Java中,您僅執行十六進制編碼。 您應該堅持一種編碼方式,而不要同時使用兩種編碼方式。
其他注意事項:
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