fix: minor improvements

diffie-hellman.el

@@ -40,7 +40,6 @@
     (when (get-buffer buf-a) (kill-buffer buf-a))
     (generate-new-buffer buf-a)
     (with-current-buffer buf-a
-      (progn
       (insert (phga/dh-pretty-name "Alice"))
       (insert (concat "P for GF(P) = " (number-to-string p) "\n"))
       (insert (concat "G = " (number-to-string g) "\n"))
@@ -48,12 +47,11 @@
       (insert (concat "Alpha = " (number-to-string aa) "\n"))
       (insert (concat "Beta = " (number-to-string bb) " (sent by Bob to Alice)\n"))
       (insert (concat "Secret Key = " (number-to-string ka) " (Beta^A mod P == (G^B)^A mod P\n"))
-        ))
+      )
     ;; Bob
     (when (get-buffer buf-b) (kill-buffer buf-b))
     (generate-new-buffer buf-b)
     (with-current-buffer buf-b
-      (progn
       (insert (phga/dh-pretty-name "Bob"))
       (insert (concat "P for GF(P) = " (number-to-string p) "\n"))
       (insert (concat "G = " (number-to-string g) "\n"))
@@ -61,12 +59,11 @@
       (insert (concat "Beta = " (number-to-string bb) "\n"))
       (insert (concat "Alpha = " (number-to-string aa) " (sent by Alice to Bob)\n"))
       (insert (concat "Secret Key = " (number-to-string kb) " (Alpha^B mod P == (G^A)^B mod P\n"))
-        ))
+      )
     ;; (kill-buffer "*Public*")
     (when (get-buffer buf-p) (kill-buffer buf-p))
     (generate-new-buffer buf-p)
     (with-current-buffer buf-p
-      (progn
       (insert "XxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXx\n")
       (insert "         This is a public transport buffer!\n")
       (insert "           Mean Hackerbois can wait here\n           and sniff the communication!!!\n")
@@ -75,13 +72,13 @@
       (insert (concat "G = " (number-to-string g) "\n"))
       (insert (concat "Alpha = " (number-to-string aa) "\n"))
       (insert (concat "Beta = " (number-to-string bb) "\n"))
-        ))
+      )
 
     ;; Create Window setup lel that's soooo bad I am SORRY
     (delete-other-windows)
-    (command-execute 'split-window-horizontally)
+    (split-window-horizontally)
-    (command-execute 'split-window-horizontally)
+    (split-window-horizontally)
-    (command-execute 'balance-windows)
+    (balance-windows)
 
     (set-window-buffer (nth 0 (window-list)) buf-a)
     (set-window-buffer (nth 1 (window-list)) buf-p)
@@ -93,11 +90,10 @@
   "Get a random prime number up to n (inclusive)"
   (interactive)
   (let (
-        (q (random n))
+        (q (+ 2 (random (- n 2))))
         )
     ;; p <= 1 -> not a prime number
-    (if (and (> q 1)
+    (if (phga/dh-is-prime q)
-             (phga/dh-is-prime q))
         q
       (phga/dh-get-random-prime-number n))
     )
@@ -135,10 +131,12 @@
 (defun phga/dh-pretty-name (name)
   "Returns the name in a pretty format"
   (format "****************************\n    Hi my Name is %s!\n****************************\n\n" name))
+;; (phga/dh-example)
+;; (and nil t)
 
-;; Tests:
 ;; (phga/dh-get-generator-p (phga/dh-get-random-prime-number 20))
-;; (and nil t)
+
+;; ;; Test
 ;; (setq phga/p (phga/dh-get-generator-p (phga/dh-get-random-prime-number 20)))
 ;; (setq phga/g (phga/dh-get-generator-elem phga/p))
 ;; (setq phga/a (+ 1 (random (- phga/p 2))))