From 53ba4f64a538f97f99a184db88a74dc5db00c8c2 Mon Sep 17 00:00:00 2001
From: Victor Mark <vicmarkopoulos@gmail.com>
Date: Sun, 7 Oct 2018 16:53:15 +0200
Subject: [PATCH 1/2] Adding vigenere cipher script

---
 vigenere_cipher/README.md   | 17 +++++++++
 vigenere_cipher/vigenere.py | 75 +++++++++++++++++++++++++++++++++++++
 2 files changed, 92 insertions(+)
 create mode 100644 vigenere_cipher/README.md
 create mode 100644 vigenere_cipher/vigenere.py

diff --git a/vigenere_cipher/README.md b/vigenere_cipher/README.md
new file mode 100644
index 0000000..34ababf
--- /dev/null
+++ b/vigenere_cipher/README.md
@@ -0,0 +1,17 @@
+# Vigenère cipher
+
+Python script that encrypts/decrypts a given text with a given key based on the [Vigenere cipher](https://en.wikipedia.org/wiki/Vigenère_cipher)
+
+# Usage
+
+For Windows users:
+
+```bash
+$ python vigenere.py
+```
+
+For Mac/Linux/Unix users:
+
+```bash
+$ ./vigenere.py
+```
diff --git a/vigenere_cipher/vigenere.py b/vigenere_cipher/vigenere.py
new file mode 100644
index 0000000..c9e9470
--- /dev/null
+++ b/vigenere_cipher/vigenere.py
@@ -0,0 +1,75 @@
+alph = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
+
+#actuall stuff
+def decryption(key, text):
+    key_len = len(key)
+    count = 0
+    #adjusting the key
+    real_key = ''
+    #fixing spaces
+    for i in text:
+        if i != ' ':
+            if count == len(key):
+                count = 0
+            real_key += key[count]
+            count += 1
+        else:
+            real_key += ' '
+    print(real_key)
+    encr = ''
+    #decrypting
+    for c in range(0,len(text)):
+        if text[c] == ' ':
+            encr += ' '
+        else:
+            encr += (alph[(ord(text[c]) - ord(real_key[c])) % 26])
+    return encr
+
+def encryption(key, text):
+    key_len = len(key)
+    count = 0
+    #adjusting the key
+    real_key = ''
+    #fixing spaces
+    for i in text:
+        if i != ' ':
+            if count == len(key):
+                count = 0
+            real_key += key[count]
+            count += 1
+            
+        else:
+            real_key += ' '
+    print(real_key)
+    encr = ''
+    #encrypting
+    for c in range(0,len(text)):
+        if text[c] == ' ':
+            encr += ' '
+        else:
+            encr += (alph[(ord(real_key[c]) + ord(text[c])) % 26])
+    return encr
+
+#user input
+def main():
+    boolean = True
+    while(boolean):
+        try:
+            mode = input('Do you want to encrypt or to decrypt [e/d]? ')
+            if mode.upper().startswith('E'):
+                text = input('Please enter the text: ').upper()
+                key = input('Please enter the key: ').upper()
+                print(encryption(key, text))
+                boolean = False
+            elif mode.upper().startswith('D'):
+                text = input('Please enter the text: ').upper()
+                key = input('Please enter the key: ').upper()
+                print(decryption(key, text))
+                boolean = False
+            else:
+                print('Please enter a valid choice')
+        except KeyboardInterrupt:
+            exit()
+    
+if __name__ == '__main__':
+    main()

From bc61e2358e4d1672419d7be02aaa9ffaf874c261 Mon Sep 17 00:00:00 2001
From: Victor Mark <vicmarkopoulos@gmail.com>
Date: Sun, 7 Oct 2018 17:07:45 +0200
Subject: [PATCH 2/2] Fixing number input

---
 vigenere_cipher/vigenere.py | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/vigenere_cipher/vigenere.py b/vigenere_cipher/vigenere.py
index c9e9470..0a32499 100644
--- a/vigenere_cipher/vigenere.py
+++ b/vigenere_cipher/vigenere.py
@@ -15,12 +15,14 @@ def decryption(key, text):
             count += 1
         else:
             real_key += ' '
-    print(real_key)
+    #print(real_key)
     encr = ''
     #decrypting
     for c in range(0,len(text)):
         if text[c] == ' ':
             encr += ' '
+        elif ((ord(text[c]) >= 48) and (ord(text[c]) <= 57)):
+            encr += text[c]
         else:
             encr += (alph[(ord(text[c]) - ord(real_key[c])) % 26])
     return encr
@@ -40,12 +42,14 @@ def encryption(key, text):
             
         else:
             real_key += ' '
-    print(real_key)
+    #print(real_key)
     encr = ''
     #encrypting
     for c in range(0,len(text)):
         if text[c] == ' ':
             encr += ' '
+        elif ((ord(text[c]) >= 48) and (ord(text[c]) <= 57)):
+            encr += text[c]
         else:
             encr += (alph[(ord(real_key[c]) + ord(text[c])) % 26])
     return encr