initial build

services/encryption.py

@@ -0,0 +1,25 @@
+class Encryption:
+    @staticmethod
+    def vigenere(text: str, key: str, encrypt=True):
+        result = ''
+
+        for i in range(len(text)):
+            letter_n = ord(text[i])
+            key_n = ord(key[i % len(key)])
+
+            if encrypt:
+                value = (letter_n + key_n) % 1114112
+            else:
+                value = (letter_n - key_n) % 1114112
+
+            result += chr(value)
+
+        return result
+
+    @staticmethod
+    def encrypt(text: str, key: str):
+        return Encryption.vigenere(text=text, key=key, encrypt=True)
+
+    @staticmethod
+    def decrypt(text: str, key: str):
+        return Encryption.vigenere(text=text, key=key, encrypt=False)