Question

我需要移植此代码（c＃中的控制台应用程序）： Decrypt PHP encrypted string in C# 到WinRT代码。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);

}}

我在加密功能的最后一行有错误：附加信息：目标多字节代码页中不存在Unicode字符的映射。我希望得到与上述主题相同的结果。这个解决方案可以正确无误吗？

更新我删除了错误。代码是：

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);
    }
}}

但是这段代码的结果与上面的主题不一样。我需要这个，因为我必须与php服务器通信。

更新＃2 好的，我了解到在WinRT中我只能使用128AES。所以，我改变了PHP脚本：

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，＆＃34; \ 0 \ 4＆＃34;）; 返回（$ RTN）;} function encryptRJ128（$ 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

密码=＆＃34; Asd＆＃34;
Key =＆＃34; lkirwf897 + 22＃bbt＆＃34;它必须是16位
IV =＆＃34; 741952hheeyy66＃c＆＃34;

我在c＃＆＃34; eSy8m8ygN7rtC80DMdGOUQ ==＆＃34;。我需要用PHP。

Answer 1

嗯，这是我的解决方案。

在C＃代码中，我需要合并两个字节数组，然后再将其编码为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 />';

这是C＃代码：

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);

端口AES加密代码到WinRT

1 个答案: