將AES加密代碼移植到WinRT

Question

我需要移植此代碼（C＃中的控制台應用程序）：將C＃中的PHP加密字符串解密為WinRT代碼。 我有：

class Crypto{const string Key = "lkirwf897+22#bbtrm8814z5qq=498j5"; 
const string IV = "741952hheeyy66#cs!9hjv887mxx7@8y";
public static string Encrypt(string login)
{
    var input = CryptographicBuffer.ConvertStringToBinary(login, BinaryStringEncoding.Utf8);
    var key1 = CryptographicBuffer.ConvertStringToBinary(Key, BinaryStringEncoding.Utf8);
    var iv = CryptographicBuffer.ConvertStringToBinary(IV, BinaryStringEncoding.Utf8);

    var encryptor = SymmetricKeyAlgorithmProvider.OpenAlgorithm(SymmetricAlgorithmNames.AesCbcPkcs7);

    var key2 = encryptor.CreateSymmetricKey(key1);

    var encrypted = CryptographicEngine.Encrypt(key2, input, iv);

    return CryptographicBuffer.ConvertBinaryToString(BinaryStringEncoding.Utf8, encrypted);
}

public static string Decrypt(string LoginToDecode)
{
    var input = CryptographicBuffer.ConvertStringToBinary(LoginToDecode, BinaryStringEncoding.Utf8);
    var key1 = CryptographicBuffer.ConvertStringToBinary(Key, BinaryStringEncoding.Utf8);
    var iv = CryptographicBuffer.ConvertStringToBinary(IV, BinaryStringEncoding.Utf8);

    var decryptor = SymmetricKeyAlgorithmProvider.OpenAlgorithm(SymmetricAlgorithmNames.AesCbcPkcs7);

    var key2 = decryptor.CreateSymmetricKey(key1);

    var decrypted = CryptographicEngine.Decrypt(key2, input, iv);

    return CryptographicBuffer.ConvertBinaryToString(BinaryStringEncoding.Utf8, decrypted);

}}

我在Encrypt函數的最后一行中出錯：其他信息：目標多字節代碼頁中不存在Unicode字符的映射。 我希望得到與上述主題相同的結果。 這個解決方案可以正確無誤嗎？

更新我刪除了錯誤。 代碼是：

class Crypto{const string Key = "lkirwf897+22#bbtrm8814z5qq=498j5"; 
const string IV = "741952hheeyy66#cs!9hjv887mxx7@8y";

public static string Encrypt(string login)
{
    var input = CryptographicBuffer.ConvertStringToBinary(login, BinaryStringEncoding.Utf8);
    var key1 = CryptographicBuffer.ConvertStringToBinary(Key, BinaryStringEncoding.Utf8);
    var iv = CryptographicBuffer.ConvertStringToBinary(IV, BinaryStringEncoding.Utf8);

    var encryptor = SymmetricKeyAlgorithmProvider.OpenAlgorithm(SymmetricAlgorithmNames.AesCbcPkcs7);

    var key2 = encryptor.CreateSymmetricKey(key1);

    var encrypted = CryptographicEngine.Encrypt(key2, input, iv);

    return CryptographicBuffer.EncodeToBase64String(encrypted);
}

public static string Decrypt(string LoginToDecode)
{
    var input = CryptographicBuffer.DecodeFromBase64String(LoginToDecode);
    var key1 = CryptographicBuffer.ConvertStringToBinary(Key, BinaryStringEncoding.Utf8);
    var iv = CryptographicBuffer.ConvertStringToBinary(IV, BinaryStringEncoding.Utf8);

    var decryptor = SymmetricKeyAlgorithmProvider.OpenAlgorithm(SymmetricAlgorithmNames.AesCbcPkcs7);

    var key2 = decryptor.CreateSymmetricKey(key1);

    var decrypted = CryptographicEngine.Decrypt(key2, input, iv);

    return CryptographicBuffer.ConvertBinaryToString(BinaryStringEncoding.Utf8, decrypted);
    }
}}

但是這段代碼的結果與上面的主題不同。 我需要這個，因為我必須與php服務器通信。

UPDATE＃2好，我了解到在WinRT中我只能使用128AES。 因此，我更改了PHP腳本：

function decryptRJ128($key,$iv,$string_to_decrypt){

$ string_to_decrypt = base64_decode（$ string_to_decrypt）; $ rtn = mcrypt_decrypt（MCRYPT_RIJNDAEL_128，$ key，$ string_to_decrypt，MCRYPT_MODE_CBC，$ iv）; $ rtn = rtrim（$ rtn，“ \\ 0 \\ 4”）; return（$ rtn）;}函數cryptoRJ128（$ key，$ iv，$ string_to_encrypt）{$ rtn = mcrypt_encrypt（MCRYPT_RIJNDAEL_128，$ key，$ string_to_encrypt，MCRYPT_MODE_CBC，$ iv）; $ rtn = base64_encode（$ rtn）; 返回（$ RTN）;}

而對於

• 密碼=“ Asd”
• 鍵=“ lkirwf897 + 22＃bbt”，必須為16位
• IV =“ 741952hheeyy66＃c”

我在c＃“ eSy8m8ygN7rtC80DMdGOUQ ==”。 我在PHP中需要這個。

Answer 1

好吧，這是我的解決方案。

在C＃代碼中，我需要先合並兩個字節數組，然后再將其編碼為base64。

/* PHP */
$key        = '12345678abcdefgh';
$text       = "d9e978bc7ca9179f0d51e91521d41d8d";

$iv_size    = mcrypt_get_iv_size(MCRYPT_RIJNDAEL_128, MCRYPT_MODE_CBC);
$iv         = mcrypt_create_iv($iv_size);
$iv         = '87654321hgfedcba'; //Just to test

$encrypted = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $key, $text, MCRYPT_MODE_CBC, $iv);
$encrypted = base64_encode($iv.$encrypted);

$decryptedd = base64_decode($encrypted);
$iv_dec     = substr($decryptedd, 0, $iv_size);
$decrypted  = substr($decryptedd, $iv_size);
$decrypted  = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $key, $decrypted, MCRYPT_MODE_CBC, $iv_dec);

echo 'Key: '.$key.'<br />';
echo 'Text: '.$text.'<br />';
echo 'IV: '.$iv.' (Size: '.$iv_size.')<br />';
echo 'Encrypted: '.$encrypted.'<br />';
echo 'IV decrypted: '.$iv_dec.'<br />';
echo 'Decrypted: '.$decrypted.'<br />';

這是C＃代碼：

var input = CryptographicBuffer.ConvertStringToBinary("d9e978bc7ca9179f0d51e91521d41d8d", BinaryStringEncoding.Utf8);
var key = CryptographicBuffer.ConvertStringToBinary("12345678abcdefgh", BinaryStringEncoding.Utf8);
var iv = CryptographicBuffer.ConvertStringToBinary("87654321hgfedcba", BinaryStringEncoding.Utf8);

var encryptor = SymmetricKeyAlgorithmProvider.OpenAlgorithm(SymmetricAlgorithmNames.AesCbc);

byte[] a = iv.ToArray();
byte[] b = CryptographicEngine.Encrypt(encryptor.CreateSymmetricKey(key), input, iv).ToArray();

byte[] c = new byte[a.Length + b.Length];
Buffer.BlockCopy(a, 0, c, 0, a.Length);
Buffer.BlockCopy(b, 0, c, a.Length, b.Length);

var result = Convert.ToBase64String(c);