Question

我试图通过密码解密文件（使用相同的密码加密），但是它会抛出异常并且我不确定在哪里查看。

这就是我生成密码的方式

using (var rijndael = System.Security.Cryptography.Rijndael.Create())
{
    rijndael.GenerateKey();
    var key = Convert.ToBase64String(rijndael.Key);
    MessageBox.Show(key, "Key created", MessageBoxButton.OK, MessageBoxImage.Information);
    Account.CreateAccount(key);
    Console.WriteLine(Account.Save(key));
    Clipboard.SetText(key);
}

以及我如何保存帐户（返回true并创建加密文件）

private const int SaltSize = 8;
...
public static bool Save(string password)
    {
        try
        {
            var keyGenerator = new Rfc2898DeriveBytes(password, SaltSize);
            var rijndael = Rijndael.Create();
            rijndael.IV = keyGenerator.GetBytes(rijndael.BlockSize / 8);
            rijndael.Key = keyGenerator.GetBytes(rijndael.KeySize / 8);

            using (var fs = new FileStream(fileName, FileMode.Create, FileAccess.Write))
            {
                fs.Write(keyGenerator.Salt, 0, SaltSize);
                using (var cryptoStream = new CryptoStream(fs, rijndael.CreateEncryptor(), CryptoStreamMode.Write))
                {
                    BinaryFormatter formatter = new BinaryFormatter();
                    formatter.Serialize(cryptoStream, map);
                }
                fs.Close();
            }
            return true;
        }
        catch(ArgumentNullException e)
        {
            return false;
        }
    }

以及我如何加载该文件（返回-1并抛出异常）

public static int Load(String password)
    {

        Dictionary<string, Account> ret;
        var salt = new byte[SaltSize];
        var keyGenerator = new Rfc2898DeriveBytes(password, salt);
        var rijndael = Rijndael.Create();
        rijndael.IV = keyGenerator.GetBytes(rijndael.BlockSize / 8);
        rijndael.Key = keyGenerator.GetBytes(rijndael.KeySize / 8);
        try
        {
            using (Stream fs = new FileStream(fileName, FileMode.Open, FileAccess.Read))
            using (var cryptoStream = new CryptoStream(fs, rijndael.CreateDecryptor(), CryptoStreamMode.Read))
            {
                fs.Read(salt, 0, SaltSize);
                if (fs.Length.Equals(0))
                {
                    return 0;
                }
                BinaryFormatter binaryFormatter = new BinaryFormatter();
                ret = (Dictionary<string, Account>)binaryFormatter.Deserialize(cryptoStream);
            }
            map = ret;
            return 1;
        }
        catch(Exception e)
        {
            return -1;
        }
    }

在加载时输出

抛出异常：＆＃39; System.Runtime.Serialization.SerializationException＆＃39;在mscorlib.dll中抛出异常：＆＃39; System.Security.Cryptography.CryptographicException＆＃39;在mscorlib.dll中抛出异常：＆＃39; System.Runtime.Serialization.SerializationException＆＃39;在mscorlib.dll中抛出异常：＆＃39; System.Security.Cryptography.CryptographicException＆＃39;在mscorlib.dll中抛出异常：＆＃39; System.Runtime.Serialization.SerializationException＆＃39;在mscorlib.dll中抛出异常：＆＃39; System.Security.Cryptography.CryptographicException＆＃39;在mscorlib.dll中 -1

解密序列化文件，抛出多个异常

0 个答案: