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- public static string GenerateKey(this string str, int nbr)
- {
- char[] args = { 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
- 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z',
- '0', '1', '2', '3', '4', '5', '6', '7', '8', '9'};
- var hex_chars = new string[] { "0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "A", "B", "C", "D", "E", "F" };
- string newStr = str;
- var rdn = new AsyncRandom();
- for (int i = 0; i < nbr; i++)
- {
- var n = rdn.Next(0, 100);
- if (n <= 40)
- {
- newStr += (char)Math.Floor(rdn.NextDouble(0, 26) + 65);
- continue;
- }
- if (n <= 80)
- {
- newStr += (char)Math.Floor(rdn.NextDouble(0, 26) + 97);
- continue;
- }
- newStr += (char)Math.Floor(rdn.NextDouble(0, 9) + 48);
- }
- var r = 0;
- for (var i = 0; i < newStr.Length; i++)
- {
- r = r + ((int)newStr[i]) % 16;
- }
- newStr += hex_chars[r % 16];
- return newStr;
- }
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