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Diffstat (limited to 'A5.1/C#/A5/Program.cs')
| -rw-r--r-- | A5.1/C#/A5/Program.cs | 150 |
1 files changed, 150 insertions, 0 deletions
diff --git a/A5.1/C#/A5/Program.cs b/A5.1/C#/A5/Program.cs new file mode 100644 index 0000000..efa4150 --- /dev/null +++ b/A5.1/C#/A5/Program.cs @@ -0,0 +1,150 @@ +/*
+ * A5/1 Implementation
+ *
+ * Information: http://en.wikipedia.org/wiki/A5/1
+ * Released : 24/10/2008
+ * App Options: -d (Debugging mode)
+ *
+ * Written by : Brett Gervasoni (brett.gervasoni [at] gmail.com)
+ * Thanks to : Angus McMahon (angusmcmahon [at] gmail.com)
+ *
+ * Notes:
+ * - Debugging mode will show step by step processes
+ * - The code has been designed to be easily expandable, so that more secure
+ * versions of the A5 family can be introduced.
+ * - Various properties of the A5Engine class can be modified
+ * - If order matters then put things in order to begin with!
+ * Polynomials, clocking bits, and maximum register lengths.
+ * - If data is not in order the application will try its best to make
+ * the cipher work.
+ * - Polynomials for each register are chosen based on their largest exponent
+ * being less than register length.
+ *
+ * Instructions:
+ * numRegisters = The number of registers to use
+ * maxRegLens = The max register length for each register
+ * regIndexes = The clocking bits for each register
+ * polynomialsArray = The polynomials to use for each register
+ * sourceArray = Random binary bits
+ * */
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace A5
+{
+ class Program
+ {
+ static void Main(string[] args)
+ {
+ //Create registers
+ A5Engine A5eng = new A5Engine();
+
+ //To expand the algorithm...
+ //Edit below properties
+ A5eng.numRegisters = 3; //Number of registers to use
+ A5eng.maxRegLens = new int[] { 19, 22, 23 }; //Test max reg lengths: { 5,5,5 };
+ A5eng.regIndexes = new int[] { 8, 10, 10 }; //Test clocking bits: { 0,0,0 };
+
+ //Test polynomials: { "x^1+x^2+x^3+1", "x^0+x^2+x^3+1", "x^3+x^4+1" };
+ A5eng.polynomialsArray = new string[] { "x^8+x^17+x^16+x^13+1",
+ "x^21+x^20+1",
+ "x^22+x^21+x^20+x^7+1" };
+ A5eng.sourceArray = new int[] { 1, 0, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 0, 1,
+ 1, 0, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 0, 1,
+ 1, 0, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 0, 1,
+ 1, 0, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 0, 1,
+ 1, 0, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 0, 1,
+ 0, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 1, 0, 1 };
+
+ /* DO NOT EDIT BELOW THIS POINT */
+ int numRegPushes = 100;
+ bool testPassed = true; //For cipher check
+
+ if (args.Length > 0)
+ {
+ if (args[0] == "-d")
+ {
+ A5eng.dbMode = true;
+ if (args.Length > 1)
+ {
+ try
+ {
+ numRegPushes = int.Parse(args[1]);
+ }
+ catch (Exception ex)
+ {
+ testPassed = false;
+
+ Console.WriteLine("Error: Numeric values only!");
+ Console.WriteLine("Exception: " + ex.Message);
+ }
+ }
+ }
+ }
+
+ if (A5eng.sourceArray.Length < A5eng.GetMaxRegLensTotal())
+ {
+ testPassed = false;
+ Console.WriteLine("[-] Not enough source data!");
+ }
+
+ if (A5eng.polynomialsArray.Length != A5eng.numRegisters)
+ {
+ testPassed = false;
+ Console.WriteLine("[-] Not enough polynomials");
+ }
+
+ if (testPassed)
+ {
+ A5eng.Registers = A5eng.CreateRegisters();
+
+ if (A5eng.dbMode)
+ {
+ Console.WriteLine("Output (debugging mode): ");
+ for (int ia = 0; ia < numRegPushes; ia++)
+ {
+ Console.WriteLine("[register]");
+ int c = 0;
+ foreach (int[] p in A5eng.Registers)
+ {
+ Console.Write("register: {0} ", c);
+ foreach (int poly in p)
+ {
+ Console.Write(poly.ToString());
+ }
+ Console.WriteLine();
+
+ c++;
+ }
+ Console.WriteLine("[/register]");
+
+ int[] regTS = A5eng.RegistersToShift();
+ A5eng.RegisterShift(regTS);
+
+ System.Threading.Thread.Sleep(20); //Slow the output
+ }
+
+ Console.WriteLine("\n{0} loops of A5/1 have been completed.", numRegPushes.ToString());
+ }
+ else
+ {
+ A5eng.Intro();
+
+ Console.WriteLine("Output: ");
+ while (true)
+ {
+ Console.Write(A5eng.GetOutValue().ToString());
+
+ int[] regTS = A5eng.RegistersToShift();
+ A5eng.RegisterShift(regTS);
+
+ System.Threading.Thread.Sleep(20); //Slow the output
+ }
+ }
+ }
+ }
+ }
+}
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