Initial data commit

Task/SQL-based-authentication/C-sharp/sql-based-authentication-1.cs

@@ -0,0 +1,38 @@
+using System.Security.Cryptography;
+using System.Text;
+
+namespace rosettaMySQL
+{
+    class Hasher
+    {
+        private static string _BytesToHex(byte[] input)
+        {
+            var strBuilder = new StringBuilder();
+            foreach (byte _byte in input)
+            {
+                strBuilder.Append(_byte.ToString("x2"));
+            }
+            return strBuilder.ToString();
+        }
+
+        public static string Hash(string salt, string input)
+        {
+            using (MD5 md5 = new MD5CryptoServiceProvider())
+            {
+                var bytes = Encoding.Default.GetBytes(salt + input);
+                var data = md5.ComputeHash(bytes);
+                return _BytesToHex(data);
+            }
+        }
+
+        public static string GenSalt()
+        {
+            using (RandomNumberGenerator rng = new RNGCryptoServiceProvider())
+            {
+                var salt = new byte[16];
+                rng.GetBytes(salt);
+                return _BytesToHex(salt);
+            }
+        }
+    }
+}