过去几天我一直在尝试移植用于登录海岸向导角色生成器API的简单加密(找到here)(因此我的应用可以直接下载用户的角色)从服务器到我可以在Windows 8 Metro应用程序中使用的东西,因为AesManaged没有进入Metro加密库。看到我充其量只是一名新手程序员,这已经证明有点超出了我的技能。
这是我需要移植的代码:
public static byte[] SimpleEncrypt(string value, string key)
{
byte[] buffer2;
ICryptoTransform transform = GetSimpleAlgorithm(key).CreateEncryptor();
using (MemoryStream stream = new MemoryStream())
{
using (CryptoStream stream2 = new CryptoStream(stream, transform, CryptoStreamMode.Write))
{
byte[] bytes = Encoding.UTF8.GetBytes(value);
stream2.Write(bytes, 0, bytes.Length);
stream2.Flush();
stream2.FlushFinalBlock();
stream.Position = 0L;
buffer2 = stream.ToArray();
}
}
return buffer2;
}
private static SymmetricAlgorithm GetSimpleAlgorithm(string key)
{
AesManaged aes = new AesManaged();
byte[] source = new SHA256Managed().ComputeHash(Encoding.UTF8.GetBytes(key));
return new AesManaged { Key = source, IV = source.Take<byte>((aes.BlockSize / 8)).ToArray<byte>() };
}
这用于在传递登录之前加密密码:
contentClient.Login(username, SimpleEncrypt(password, username));
如果需要,Web服务位于:http://ioun.wizards.com/ContentVault.svc
在第一个链接中关于该链接的评论中,有人在二月份为Windows 8建议了一些代码,但是代码在我甚至编译之前还有一些问题需要修复,即便如此,我尝试使用它登录,我从服务中得到一个异常,说“填充无效,无法删除”。
以下是我目前正在使用的内容:
private static byte[] SimpleEncrypt(string value, string key)
{
var simpleAlgorithm = GetSimpleAlgorithm(key);
var encryptedBuffer = CryptographicEngine.Encrypt(simpleAlgorithm.Item1, CryptographicBuffer.ConvertStringToBinary(value, BinaryStringEncoding.Utf8), simpleAlgorithm.Item2);
var result = new byte[encryptedBuffer.Length];
CryptographicBuffer.CopyToByteArray(encryptedBuffer, out result);
return result;
}
private static Tuple<CryptographicKey, IBuffer> GetSimpleAlgorithm(string key)
{
var provider = SymmetricKeyAlgorithmProvider.OpenAlgorithm(SymmetricAlgorithmNames.AesCbcPkcs7);
var keyAsBinary = CryptographicBuffer.ConvertStringToBinary(key, BinaryStringEncoding.Utf8);
var source = HashAlgorithmProvider.OpenAlgorithm(HashAlgorithmNames.Sha256).HashData(keyAsBinary);
var shortKey = CryptographicBuffer.CreateFromByteArray(UTF8Encoding.UTF8.GetBytes(key).Take((int)provider.BlockLength).ToArray());
return new Tuple<CryptographicKey,IBuffer>(provider.CreateSymmetricKey(source), shortKey);
}
任何帮助实现这项工作的人都会非常感激。
答案 0 :(得分:1)
Welp,花了更多的时间来查看它,并找出问题所在。
建议的更新版本使用“key”字符串来创建IV,而它应该使用密钥的哈希值。
这是功能版本,万一有人想要它:
private static byte[] SimpleEncrypt(string value, string key)
{
var simpleAlgorithm = GetSimpleAlgorithm(key);
CryptographicKey encryptKey = simpleAlgorithm.Item1;
IBuffer IV = simpleAlgorithm.Item2;
var encryptedBuffer = CryptographicEngine.Encrypt(encryptKey, CryptographicBuffer.ConvertStringToBinary(value, BinaryStringEncoding.Utf8), IV);
var result = new byte[encryptedBuffer.Length];
CryptographicBuffer.CopyToByteArray(encryptedBuffer, out result);
return result;
}
private static Tuple<CryptographicKey, IBuffer> GetSimpleAlgorithm(string key)
{
var provider = SymmetricKeyAlgorithmProvider.OpenAlgorithm(SymmetricAlgorithmNames.AesCbcPkcs7);
var keyAsBinary = CryptographicBuffer.ConvertStringToBinary(key, BinaryStringEncoding.Utf8);
var source = HashAlgorithmProvider.OpenAlgorithm(HashAlgorithmNames.Sha256).HashData(keyAsBinary);
byte[] sourceArray = new byte[source.Length];
CryptographicBuffer.CopyToByteArray(source, out sourceArray);
var shortKey = CryptographicBuffer.CreateFromByteArray(sourceArray.Take((int)provider.BlockLength).ToArray());
return new Tuple<CryptographicKey,IBuffer>(provider.CreateSymmetricKey(source), shortKey);
}