[C#]qCrypt - Open Source Encryption

qCrypt - One side encryption. It's kinda hard to decrypt it. Although if used small amount of letters it's not so hard. Very basic encryption. Feel free to modify/improve it and upload of course so everyone can see. :thumbup:

Screenshot: http://img337.imageshack.us/img337/4745/66454548.png
Download: http://yy.lv/download.php?f=69738

Example:
I love RaGEZONE -> 67937422414128769424316766586502
I iove RaGEZONE -> 43694397774867024729779803447143

Main Form

PHP Code:

---

namespace qCrypt
{
    public partial class frmMainForm : Form
    {
        public frmMainForm()
        {
            InitializeComponent();
        }

        private void buttonEncrypt_Click(object sender, EventArgs e)
        {
            Encrypt.StartEncryption(textBoxUncrypted.Text);
            textBoxEncrypted.Text = Encrypt.ReturnString();
        }
    }
} 


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Encrypt

PHP Code:

---

namespace qCrypt.Classes
{
    static class Encrypt
    {
        static string FinalIntegers;
        static string EncryptText;
        static int[] MyIntArray = new int[32];

        public static void StartEncryption(string MyText)
        {
            //Uppering it just in case.
            MyText = MyText.ToUpper();

            //Making these strings empty.
            FinalIntegers = string.Empty;
            EncryptText = string.Empty;

            //Main loop where checking each letter.
            for (int i = 0; i < MyText.Length; i++)
            {
                if (MyText[i] == 'A')
                {
                    EncryptText = "67147804386935659614295334925265";
                }

                if (MyText[i] == 'B')
                {
                    EncryptText = "40234261117512095921888831693698";
                }

                if (MyText[i] == 'C')
                {
                    EncryptText = "25554594088772765822059033491034";
                }

                if (MyText[i] == 'D')
                {
                    EncryptText = "49257666344761728762503183692300";
                }

                if (MyText[i] == 'E')
                {
                    EncryptText = "92345676992698286431550173278515";
                }

                if (MyText[i] == 'F')
                {
                    EncryptText = "93726526035464017048882091246568";
                }

                if (MyText[i] == 'G')
                {
                    EncryptText = "24590313462079242595407758509550";
                }

                if (MyText[i] == 'H')
                {
                    EncryptText = "83759930172522751880516343255280";
                }

                if (MyText[i] == 'I')
                {
                    EncryptText = "90291595376905753003909888385940";
                }

                if (MyText[i] == 'K')
                {
                    EncryptText = "37127880863226049166796151709548";
                }

                if (MyText[i] == 'L')
                {
                    EncryptText = "71461042420384157122852407900801";
                }

                if (MyText[i] == 'M')
                {
                    EncryptText = "58006678924036605768805688980313";
                }

                if (MyText[i] == 'N')
                {
                    EncryptText = "12447122735386729167866363617985";
                }

                if (MyText[i] == 'O')
                {
                    EncryptText = "36141394090474783907420403818251";
                }

                if (MyText[i] == 'P')
                {
                    EncryptText = "99248304649302231675368493493475";
                }

                if (MyText[i] == 'Q')
                {
                    EncryptText = "40735018298008298730725431001991";
                }

                if (MyText[i] == 'R')
                {
                    EncryptText = "81629254782078072283690311362428";
                }

                if (MyText[i] == 'S')
                {
                    EncryptText = "11484931118782297739315078625300";
                }

                if (MyText[i] == 'T')
                {
                    EncryptText = "80642658828236815024324663471131";
                }

                if (MyText[i] == 'V')
                {
                    EncryptText = "98185113022618718347727108401890";
                }

                if (MyText[i] == 'W')
                {
                    EncryptText = "64055954743088822242668717475581";
                }

                if (MyText[i] == 'X')
                {
                    EncryptText = "34011518510939004400504471925399";
                }

                if (MyText[i] == 'Y')
                {
                    EncryptText = "34044922747088848241238723934011";
                }

                if (MyText[i] == 'Z')
                {
                    EncryptText = "34084952747088846202261871934781";
                }

                for (int n = 0; n < 32; n++)
                {
                    //Adding.
                    MyIntArray[n] = MyIntArray[n] + Convert.ToInt32(EncryptText[n]);

                    //Checking if the value is more than 10.
                    while (MyIntArray[n] > 9)
                    {
                        MyIntArray[n] = MyIntArray[n] - 10;
                    }
                }
            }

            //Adding everything.
            for (int i = 0; i < 32; i++)
            {
                FinalIntegers = FinalIntegers + Convert.ToString(MyIntArray[i]);
            }

            //TODO - Add your own sequence here. - TODO//
        }

        //Returning encrypted text.
        public static string ReturnString()
        {
            return FinalIntegers;
        }

    }
} 


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It seems really cool to me. Never knew how to make such thing.
But as I understand from code it will work only for letters.
And when you try to decrypt text it will be all upper case.

Quote:

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Originally Posted by ProKiller002

It seems really cool to me. Never knew how to make such thing.
But as I understand from code it will work only for letters.
And when you try to decrypt text it will be all upper case.

---

Well you can improve it so it will work with numbers and stuff. But actually it does work with numbers or any characters as long as it is not first char. It will just simply use the numbers from last letter which exists in the context. Actually I made them uppercase just for checking, it does not matter upper or lower. This program is not case-sensitive so does not matter at all.

Quote:

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Originally Posted by Intelext

Well you can improve it so it will work with numbers and stuff. But actually it does work with numbers or any characters as long as it is not first char. It will just simply use the numbers from last letter which exists in the context. Actually I made them uppercase just for checking, it does not matter upper or lower. This program is not case-sensitive so does not matter at all.

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Ohh I see. Then I must learn more to understand it better

Encryption is useless without being able to decrypt it.

Quote:

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Originally Posted by Ron

Encryption is useless without being able to decrypt it.

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Now this is just wrong.

It's not useless, it is used in passwords. When user enters it's password and encrypted password is compared with db password. Like MD5. It's also decryptable as far as I know. You can only guess the password using bruteforce or directory lookup.

Why did you change it to upper?
You can just do

Code:

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if(MyText[i] == 'A' || MyText[i] == 'a')

---

etc.

This is more like a hash than an encryption. O_O

Quote:

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Originally Posted by SimpleBB

Why did you change it to upper?
You can just do

Code:

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if(MyText[i] == 'A' || MyText[i] == 'a')

---

etc.

This is more like a hash than an encryption. O_O

---

It's because I want to change every letter in the text. Not just A, or B.

Btw numbers for each letter are completely random right?

Quote:

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Originally Posted by ProKiller002

Btw numbers for each letter are completely random right?

---

Yes, no algorithm was made during number creation.

You can create random numbers for each letter at program start, but then encrypted text will be useless if you restart the application.

I thought about generating random numbers each time but add like 4 characters specifying how numbers were generated or something like that.
Will that work? And will it be useful?

Well you need to figure it out by yourself. If you will generate numbers and add 4 to the end.. Well you will need to read only those last 4 if you want encryption to be the same every time. Otherwise it's cool to generate everything randomly each start.

Try it, then make it better, then try again and make it even more better.

Quote:

---

Originally Posted by Intelext

Now this is just wrong.

It's not useless, it is used in passwords. When user enters it's password and encrypted password is compared with db password. Like MD5. It's also decryptable as far as I know. You can only guess the password using bruteforce or directory lookup.

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This isn't encryption. It's not 100% reversible but it is incredibly weak, so it's also not suitable for a hash.

Why don't you get a book on encryption algorithms and read up a bit on some math before you try and make your own encryption algorithm?

Quote:

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Originally Posted by jMerliN

Why don't you get a book on encryption algorithms and read up a bit on some math before you try and make your own encryption algorithm?

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I have no point in making one. This was just for fun. :love:

This isn't actually encryption at all. You're just giving a random number for a letter. Example for a BASIC encryption:

PHP Code:

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public void Encrpyt (ref byte[] bArray, Int32 nIndex, Int32 nSize)
{
   if (nSize < 0) return;
   for (int i = nIndex; i < nSize; ++i)
        bArray[i] = ~((bArray[i] << 3) | (bArray[i] >> 5)&0xff);
} 


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Like I said, that's veryyyyyyyy basic.

This is just substitution so its more like a cipher..And it has no real use since for each letter is replaced with something massive, imagine a 12 character pass "encrypted" with this, the field in the db would have to hold like 120 characters..

why not use a switch inside the forloop instead of all those ifs?

He could also use case instead of if. lol.

---------- Post added at 09:59 PM ---------- Previous post was at 09:56 PM ----------

I wonder.. could this be used to encrypt a file?

Quote:

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Originally Posted by JaredT

He could also use case instead of if. lol.

---------- Post added at 09:59 PM ---------- Previous post was at 09:56 PM ----------

I wonder.. could this be used to encrypt a file?

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cases are inside switch statements :tongue:

A good encryption system should have a password, and from that password the encryption for the text should be made. That way there is no way in hell some one can break it without threatening you :P

Still very good though :)

same in vb.net

PHP Code:

---

Namespace qCrypt.Classes
    Module Encrypt
        Sub New()
        End Sub
        Private FinalIntegers As String
        Private EncryptText As String
        Private MyIntArray As Integer() = New Integer(31) {}
        
        Public Sub StartEncryption(ByVal MyText As String)
            'Uppering it just in case.
            MyText = MyText.ToUpper()
            
            'Making these strings empty.
            FinalIntegers = String.Empty
            EncryptText = String.Empty
            
            'Main loop where checking each letter.
            For i As Integer = 0 To MyText.Length - 1
                If MyText(i) = "A" Then
                    EncryptText = "67147804386935659614295334925265"
                End If
                
                If MyText(i) = "B" Then
                    EncryptText = "40234261117512095921888831693698"
                End If
                
                If MyText(i) = "C" Then
                    EncryptText = "25554594088772765822059033491034"
                End If
                
                If MyText(i) = "D" Then
                    EncryptText = "49257666344761728762503183692300"
                End If
                
                If MyText(i) = "E" Then
                    EncryptText = "92345676992698286431550173278515"
                End If
                
                If MyText(i) = "F" Then
                    EncryptText = "93726526035464017048882091246568"
                End If
                
                If MyText(i) = "G" Then
                    EncryptText = "24590313462079242595407758509550"
                End If
                
                If MyText(i) = "H" Then
                    EncryptText = "83759930172522751880516343255280"
                End If
                
                If MyText(i) = "I" Then
                    EncryptText = "90291595376905753003909888385940"
                End If
                
                If MyText(i) = "K" Then
                    EncryptText = "37127880863226049166796151709548"
                End If
                
                If MyText(i) = "L" Then
                    EncryptText = "71461042420384157122852407900801"
                End If
                
                If MyText(i) = "M" Then
                    EncryptText = "58006678924036605768805688980313"
                End If
                
                If MyText(i) = "N" Then
                    EncryptText = "12447122735386729167866363617985"
                End If
                
                If MyText(i) = "O" Then
                    EncryptText = "36141394090474783907420403818251"
                End If
                
                If MyText(i) = "P" Then
                    EncryptText = "99248304649302231675368493493475"
                End If
                
                If MyText(i) = "Q" Then
                    EncryptText = "40735018298008298730725431001991"
                End If
                
                If MyText(i) = "R" Then
                    EncryptText = "81629254782078072283690311362428"
                End If
                
                If MyText(i) = "S" Then
                    EncryptText = "11484931118782297739315078625300"
                End If
                
                If MyText(i) = "T" Then
                    EncryptText = "80642658828236815024324663471131"
                End If
                
                If MyText(i) = "V" Then
                    EncryptText = "98185113022618718347727108401890"
                End If
                
                If MyText(i) = "W" Then
                    EncryptText = "64055954743088822242668717475581"
                End If
                
                If MyText(i) = "X" Then
                    EncryptText = "34011518510939004400504471925399"
                End If
                
                If MyText(i) = "Y" Then
                    EncryptText = "34044922747088848241238723934011"
                End If
                
                If MyText(i) = "Z" Then
                    EncryptText = "34084952747088846202261871934781"
                End If
                
                For n As Integer = 0 To 31
                    'Adding.
                    MyIntArray(n) = MyIntArray(n) + Convert.ToInt32(EncryptText(n))
                    
                    'Checking if the value is more than 10.
                    While MyIntArray(n) > 9
                        MyIntArray(n) = MyIntArray(n) - 10
                    End While
                Next
            Next
            
            'Adding everything.
            For i As Integer = 0 To 31
                FinalIntegers = FinalIntegers + Convert.ToString(MyIntArray(i))
                
                'TODO - Add your own sequence here. - TODO//
            Next
        End Sub
        
        'Returning encrypted text.
        Public Function ReturnString() As String
            Return FinalIntegers
        End Function
        
    End Module
End Namespace 


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hmm interesting.
i have a question though,
where it says [example]the encryption per letter or w/e if i wanted to encrypt the word "hello" would it subtract the numbers per those 5 letters? sorry for being so curious, hopefully this makes sense to you guys.