Encrypt a file in C# (AES & RSA algorithm)

[Artem2245]

Hi guys

I want to encode part of a file but everything I do fails.

I want to encrypt part of a file, for example 7-10 MB of large files (files less than 10 MB to be fully encrypted)

Or like Phobos, encrypt three parts of each file. First, middle and last

And also do not have trouble decoding.

I will be grateful if you help me.
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[ioioio777]

  string path = @"C:\file";

            byte[] bytes = File.ReadAllBytes(path);

            int MB10 = 10485760;
            int MB7 = 7340032;

            if (bytes.Length > MB10)
            {
                Array array = bytes.ToArray();

                int number = 0;

                while (number < bytes.Length)
                {
                    if (((bytes.Length - number) > MB7))
                    {
                        Array array1 = new Array[MB7];

                        Array.Copy
                            (
                            array,
                            number,
                            array1,
                            0,
                            MB7
                            );

                        // array1 Encrypt

                        number = number + MB7;
                    }
                    else
                    {
                        Array array1 = new Array[bytes.Length - number];

                        Array.Copy
                            (
                            array,
                            number,
                            array1,
                            0,
                            bytes.Length - number
                            );

                        // array1 Encrypt

                        break;
                    }
                }

            }
            else
            {
                // Encrypt
            }

 

[ioioio777]

надеюсь никто не вздумает доебаться за то, что код слишком по-детски написан.

Я вижу , что человек задает простой вопрос и соответственно даю простое решение, которое новичек сможет прочитать "построчно".

---

I hope no one thinks to fuck for the fact that the code is written too childishly.

I see that a person asks a simple question and accordingly I give a simple solution that a beginner can read "line by line".

 

[ioioio777]

I want to encode part of a file but everything I do fails.

By the way, if you really decided to write your own R-ware, then unfortunately c# is the worst programming language for this task.

Default dotnet libraries related to cryptography are too slow.

 

[Artem2245]

By the way, if you really decided to write your own R-ware, then unfortunately c# is the worst programming language for this task.

Default dotnet libraries related to cryptography are too slow.

Thank you very much for your guidance

 

[ioioio777]

Thank you very much for your guidance

no problem

 

[pl0uton]

C# is too slow for a locker for me

 

[Artem2245]

C# is too slow for a locker for me

yes right

 

[hackertom]

C# is too slow for a locker for me

Language you prefer?