我试图做一个简单的任务。 Encypt PHP中的值，并在我的VB.net应用程序解密。 我想我会使用的TripleDES或Rijdael 128或256
我虽然这应该是简单的。 任何人都可以点我在正确的方向？
谢谢
Answer 1:
我们有一些密码对.NET和PHP C＃之间的工作。 我不熟悉VB.net。 我想它使用相同的密码库System.Security.Cryptography 。
在PHP方面，我们从mcrypt的切换到OpenSSL的，因为一些模式和补白不被mcrypt的支持。
只要你使用相同的算法（DES，AES等），相同的模式（CBC，ECB等），相同的填充（PKCS1，PKCS5），密码应在这两个平台上运行。
的使用上的mcrypt PHP端使用AES-128加密例如
$iv_size = mcrypt_get_iv_size(MCRYPT_RIJNDAEL_128, MCRYPT_MODE_CBC);
$iv = mcrypt_create_iv($iv_size, MCRYPT_RAND);
$blockSize = mcrypt_get_block_size(MCRYPT_RIJNDAEL_128);
$data = $this->paddingAlgorithm->padData($data, $blockSize);
return $iv . mcrypt_encrypt($this->MCRYPT_DES, $keyBytes, $data, MCRYPT_MODE_CBC, $iv);
请注意，我们使用PKCS7填充但mcrypt的不支持它，所以我们必须写填充算法。 我们也预先考虑IV（初始向量）的密文。 你可以存储在别处，但你需要的解密。
下面是相应的C＃代码来设置加密解密，
// create the underlying symmetric algorithm with the given name
algorithm = (SymmetricAlgorithm)CryptoConfig.CreateFromName("RIJNDAEL");
// set cipher mode
algorithm.Mode = CipherMode.CBC;
// set padding mode
algorithm.Padding = PaddingMode.PKCS7;
Answer 2:
我也看了漫长而艰难的解决问题的对策。 这里是PHP和vb.net会做你正在寻找一套完整的代码。 应该是很容易转化为C＃以及。
########################################
# BEGIN PHP CODE
########################################
<?php
ini_set('display_errors', 1);
error_reporting(E_ALL);
// I blantantly stole, tweaked and happily used this code from:
// Lord of Ports http://www.experts-exchange.com/M_1736399.html
$ky = 'lkirwf897+22#bbtrm8814z5qq=498j5'; // 32 * 8 = 256 bit key
$iv = '741952hheeyy66#cs!9hjv887mxx7@8y'; // 32 * 8 = 256 bit iv
$text = "Here is my data to encrypt!!!";
$from_vb = "QBlgcQ2+v3wd8RLjhtu07ZBd8aQWjPMfTc/73TPzlyA="; // enter value from vb.net app here to test
$etext = encryptRJ256($ky, $iv, $text);
$dtext = decryptRJ256($ky, $iv, $etext);
$vtext = decryptRJ256($ky, $iv, $from_vb);
echo "<HR>orignal string: $text";
echo "<HR>encrypted in php: $etext";
echo "<HR>decrypted in php: $dtext";
echo "<HR>encrypted in vb: $from_vb";
echo "<HR>from vb decrypted in php: $vtext";
echo "<HR>If you like it say thanks! richard dot varno at gmail dot com";
exit;
function decryptRJ256($key,$iv,$string_to_decrypt)
{
$string_to_decrypt = base64_decode($string_to_decrypt);
$rtn = mcrypt_decrypt(MCRYPT_RIJNDAEL_256, $key, $string_to_decrypt, MCRYPT_MODE_CBC, $iv);
$rtn = rtrim($rtn, "\0\4");
return($rtn);
}
function encryptRJ256($key,$iv,$string_to_encrypt)
{
$rtn = mcrypt_encrypt(MCRYPT_RIJNDAEL_256, $key, $string_to_encrypt, MCRYPT_MODE_CBC, $iv);
$rtn = base64_encode($rtn);
return($rtn);
}
?>
########################################
# END PHP CODE
########################################
########################################
# BEGIN VB.NET CODE (console app)
########################################
Imports System
Imports System.Text
Imports System.Security.Cryptography
Imports System.IO
Module Module1
' I blantantly stole, tweaked and happily used this code from:
' Lord of Ports http://www.experts-exchange.com/M_1736399.html
Sub Main()
'Shared 256 bit Key and IV here
Dim sKy As String = "lkirwf897+22#bbtrm8814z5qq=498j5" '32 chr shared ascii string (32 * 8 = 256 bit)
Dim sIV As String = "741952hheeyy66#cs!9hjv887mxx7@8y" '32 chr shared ascii string (32 * 8 = 256 bit)
Dim sTextVal As String = "Here is my data to encrypt!!!"
Dim eText As String
Dim dText As String
eText = EncryptRJ256(sKy, sIV, sTextVal)
dText = DecryptRJ256(sKy, sIV, eText)
Console.WriteLine("key: " & sKy)
Console.WriteLine()
Console.WriteLine(" iv: " & sIV)
Console.WriteLine("txt: " & sTextVal)
Console.WriteLine("encrypted: " & eText)
Console.WriteLine("decrypted: " & dText)
Console.WriteLine("If you like it say thanks! richard dot varno at gmail dot com")
Console.WriteLine("press any key to exit")
Console.ReadKey(True)
End Sub
Public Function DecryptRJ256(ByVal prm_key As String, ByVal prm_iv As String, ByVal prm_text_to_decrypt As String)
Dim sEncryptedString As String = prm_text_to_decrypt
Dim myRijndael As New RijndaelManaged
myRijndael.Padding = PaddingMode.Zeros
myRijndael.Mode = CipherMode.CBC
myRijndael.KeySize = 256
myRijndael.BlockSize = 256
Dim key() As Byte
Dim IV() As Byte
key = System.Text.Encoding.ASCII.GetBytes(prm_key)
IV = System.Text.Encoding.ASCII.GetBytes(prm_iv)
Dim decryptor As ICryptoTransform = myRijndael.CreateDecryptor(key, IV)
Dim sEncrypted As Byte() = Convert.FromBase64String(sEncryptedString)
Dim fromEncrypt() As Byte = New Byte(sEncrypted.Length) {}
Dim msDecrypt As New MemoryStream(sEncrypted)
Dim csDecrypt As New CryptoStream(msDecrypt, decryptor, CryptoStreamMode.Read)
csDecrypt.Read(fromEncrypt, 0, fromEncrypt.Length)
Return (System.Text.Encoding.ASCII.GetString(fromEncrypt))
End Function
Public Function EncryptRJ256(ByVal prm_key As String, ByVal prm_iv As String, ByVal prm_text_to_encrypt As String)
Dim sToEncrypt As String = prm_text_to_encrypt
Dim myRijndael As New RijndaelManaged
myRijndael.Padding = PaddingMode.Zeros
myRijndael.Mode = CipherMode.CBC
myRijndael.KeySize = 256
myRijndael.BlockSize = 256
Dim encrypted() As Byte
Dim toEncrypt() As Byte
Dim key() As Byte
Dim IV() As Byte
key = System.Text.Encoding.ASCII.GetBytes(prm_key)
IV = System.Text.Encoding.ASCII.GetBytes(prm_iv)
Dim encryptor As ICryptoTransform = myRijndael.CreateEncryptor(key, IV)
Dim msEncrypt As New MemoryStream()
Dim csEncrypt As New CryptoStream(msEncrypt, encryptor, CryptoStreamMode.Write)
toEncrypt = System.Text.Encoding.ASCII.GetBytes(sToEncrypt)
csEncrypt.Write(toEncrypt, 0, toEncrypt.Length)
csEncrypt.FlushFinalBlock()
encrypted = msEncrypt.ToArray()
Return (Convert.ToBase64String(encrypted))
End Function
End Module
########################################
# END VB.NET CODE
########################################
Answer 3:
对于PHP，你应该看看mcrypt扩展 ，从而支持了所有指定的密码
Answer 4:
免责声明：我从来没有实际使用的Crytography类的.NET。
要做到Rijndael算法的解密在.NET中，你可能寻找System.Security.Cryptography.RijndaelManaged类。
该页面也有如何使用它，尽管你可能还需要的一个实例，一些实例的RSACryptoServiceProvider ......我不知道。
文章来源: PHP Encryption & VB.net Decryption
