Блог

получение ошибки «Параметр неверен» при использовании rsa.Метод расшифровки открытый/закрытый ключ одинаков при шифровании/расшифровке. может ли кто-нибудь помочь мне, где я поступаю неправильно?

 private const string Key = @"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 AEsAbwBuADUAdABZAGEAdABiAEwAbwBuAFYAUQBIAHQARQAwAE0AaABCAGoASgB6ADMAUwBKAEMAegBqAEUAOQBYAHUATAB2AEcAOABaADMAcABNADgANgBGAFoAQwBxAEQALwBpAFgAbABZAEMAUgBOAEYAWQBDAGwASABNAEEAZwArAE4AbABBAGEAQwBUAGcAQwBmAG0ARAAzAEIANQA1AGEAawBHAFgAUQA9AD0APAAvAEkAbgB2AGUAcgBzAGUAUQA ADwARAA 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";
        
static void Main(string[] args)
{
    string pwd = "ABC1564";
    string encrypt = Encrypt(pwd);
    string decrypt = Decrypt(encrypt);

    Console.WriteLine("Password  String :- "   pwd.ToString());
    Console.WriteLine("Encrypted String :- "   encrypt.ToString());
    Console.WriteLine("Decrypted String :- "   decrypt.ToString());
    Console.ReadLine();
}

private static string Encrypt(string data)
{
    CspParameters CSPParam = new CspParameters();
    CSPParam.Flags = CspProviderFlags.UseMachineKeyStore;
    RSACryptoServiceProvider rsa = new RSACryptoServiceProvider(CSPParam);
    rsa.FromXmlString(System.Text.UnicodeEncoding.Unicode.GetString(System.Convert.FromBase64String(Key)));
    return System.Convert.ToBase64String(rsa.Encrypt((new System.Text.UnicodeEncoding()).GetBytes(data), false));
}

private static string Decrypt(string Crypt)
{
    // Crypt Provider
    CspParameters CSPParam = new CspParameters();
    CSPParam.Flags = CspProviderFlags.UseMachineKeyStore;
    RSACryptoServiceProvider rsa = new RSACryptoServiceProvider(CSPParam);

    // Crypt Params
    string k = System.Text.UnicodeEncoding.Unicode.GetString(System.Convert.FromBase64String(Key));
    rsa.FromXmlString(k);

    // Decrypt
    byte[] bi = (new System.Text.UnicodeEncoding()).GetBytes(System.Text.UnicodeEncoding.Unicode.GetString(System.Convert.FromBase64String(Crypt)));
    byte[] bdecr = rsa.Decrypt(bi, false);

    // Return results
    return (new System.Text.UnicodeEncoding()).GetString(bdecr);
}