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POKey generator method?
 

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  1. POKey generator method?
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    <p>I really feel stupid for posting this but since i got no answers on my question and i am still junior programmer i will post this :</p> <pre><code> //List of keys byte[] Key0 = { 10, 20, 30, 40, 50, 60, 70, 80, 90, 100 }; //mode 10 = 0 byte[] Key1 = { 1, 3, 5, 7, 9, 11, 13, 15, 17, 19 }; // i + 2 byte[] Key2 = { 2, 4, 6, 8, 10, 12, 14, 16, 18, 20 }; // i mode 2 = 0 byte[] Key3 = { 66, 77, 88, 99, 111, 222, 110, 112, 114, 115 }; // mode 11 = 0 byte[] Key4 = { 1, 4, 9, 16, 25, 36, 49, 64, 81, 100, 121 }; //x^2 byte[] Key5 = { 6,17,34,57,86,121,162,209 }; //3x^2+2x+1 byte[] Key6 = { 77,78,79,80,81,82,83,84,85,86,87 }; // only in range //Add all keys to the list List&lt;byte[]&gt; oKeysList = new List&lt;byte[]&gt;(); oKeysList.Add(Key0); oKeysList.Add(Key1); oKeysList.Add(Key2); oKeysList.Add(Key3); oKeysList.Add(Key4); oKeysList.Add(Key5); oKeysList.Add(Key6); Random oRandom = new Random(); //Generate random key index to be used in the encryption int ListSelectedIndex = oRandom.Next(0, oKeysList.Count); byte[] GeneratedKey = oKeysList[ListSelectedIndex]; //Generate 3 random number from the selected key and concate the key index to it byte[] GeneratedBytes = new byte[4]; for (int i = 0; i &lt; 3; i++) { GeneratedBytes[i] = GeneratedKey[oRandom.Next(0,GeneratedKey.Length)]; } //Add the list of key index GeneratedBytes[3] = (byte)ListSelectedIndex; //Return the genreated bytes return GeneratedBytes; </code></pre> <p>As you see i generate this 4 byte array along with a 8 bytes generated with from RNG Cryptography, and when i want to check my serial i take the last 4 bytes and use the mathematical relations between them, I want to generate many serials and be able to check if they are valid or not. I know its probably pretty old method with a very bad security so please if any one could help me or add anything to my code or suggest anything new i would be really thankful.</p>
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    1. USykh
    1. USykh
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    1. COtry http://codereview.stackexchange.com/
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      1. USNick Dandoulakis
    2. COIt's difficult to offer any suggestions without knowing what and why you want to verify.
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      1. USMarcelo Cantos
 

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