Merge pull request metafy-social#357 from theadeyemiolayinka/master

Chore: Add Caeser Cipher

Author: advaita-saha

scripts/Caeser_Cipher_sage/README.md

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+## Caeser Cipher files ADDED #348
+
+## Caeser Cipher
+Easilly Generate Caecer Cipher equivalent for any text
+
+
+## Installation
+- Clone the repo
+- download the requirements
+- run `python cc.py`

scripts/Caeser_Cipher_sage/cc.py

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+# @author https://github.com/theadeyemiolayinka
+
+from statistics import mode
+
+
+class Caesar():
+
+    def __init__(self):
+        self.LETTERS = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
+        self.translated = ''
+
+    def __crypt(self, mode):
+        for symbol in self.message.upper():
+            if symbol in self.LETTERS:
+                num = self.LETTERS.find(symbol)
+                if mode == 'encrypt':
+                    num = num + self.key
+                elif mode == 'decrypt':
+                    num = num - self.key
+
+                if num >= len(self.LETTERS):
+                    num = num - len(self.LETTERS)
+                elif num < 0:
+                    num = num + len(self.LETTERS)
+
+                self.translated = self.translated + self.LETTERS[num]
+            else:
+                self.translated = self.translated + symbol
+
+        return self.translated
+
+    def encrypt(self, message, key=0):
+        self.translated = ''
+        self.key = key
+        self.message = message
+        return self.__crypt('encrypt')
+
+    def decrypt(self, message, key=0):
+        self.translated = ''
+        self.key = key
+        self.message = message
+        return self.__crypt('decrypt')
+
+def invokeCipher(cipher, key, text, e_mode):
+    if e_mode == 'E' or e_mode == 'e':
+        print('\n====================RESULT====================')
+        return cipher.encrypt(text, key)
+    elif e_mode == 'D' or e_mode == 'd':
+        print('\n====================RESULT====================')
+        return cipher.decrypt(text, key)
+    else:
+        print('Ivalid mode.')
+        n_mode = str(input("Enter mode: [E] for encryption and [D] for decryption:\n>"))
+        return invokeCipher(cipher, key, text, n_mode)
+    
+cipher = Caesar()
+key = int(input('Enter encryption key:\n>'))
+text = str(input('Enter text:\n>'))
+e_mode = str(input("Enter mode: [E] for encryption and [D] for decryption:\n>"))
+
+print(invokeCipher(cipher, key, text, e_mode))
+print('==============================================')