Done

Author: Abhiramborige

Diff for: vernam_decryption.py

@@ -0,0 +1,33 @@
+
+# function to apply algo of vernam cipher
+def vernam(cipher_text,key):
+
+    # convert into lower cases and remove spaces
+    cipher_text=cipher_text.lower()
+    key=key.lower()
+    cipher_text=cipher_text.replace(" ","")
+    key=key.replace(" ","")
+    
+    plain_text=""
+    
+    # iterating through the length
+    for i in range(len(cipher_text)):
+        k1=ord(cipher_text[i])-97
+        k2=ord(key[i])-97
+        s=chr((((k1-k2)+26)%26)+97)
+        plain_text+=s
+    print("Decrypted message is: ",plain_text)
+
+
+plain_text=input("Enter the message to be decrypted: ")
+key=input("Enter the one time pad: ")
+vernam(plain_text,key)
+
+
+'''
+----------OUTPUT----------
+Enter the message to be decrypted: wioqfidxqam
+Enter the one time pad: Quantum king
+Decrypted message is:  goodmorning
+>>> 
+'''

Diff for: vernam_encryption.py

@@ -0,0 +1,39 @@
+
+# function to apply algo of vernam cipher
+def vernam(plain_text,key):
+
+    # convert into lower cases and remove spaces
+    
+    plain_text=plain_text.replace(" ","")
+    key=key.replace(" ","")
+    plain_text=plain_text.lower()
+    key=key.lower()
+    
+    # conditional statements
+    if(len(plain_text)!=len(key)):
+        print("Lengths are different")
+        
+    else:
+        cipher_text=""
+        
+        # iterating through the length
+        for i in range(len(plain_text)):
+            k1=ord(plain_text[i])-97
+            k2=ord(key[i])-97
+            s=chr((k1+k2)%26+97)
+            cipher_text+=s
+        print("Enrypted message is: ",cipher_text)
+
+
+plain_text=input("Enter the message: ")
+key=input("Enter the one time pad: ")
+vernam(plain_text,key)
+
+
+'''
+----------OUTPUT----------
+Enter the message: Good morning
+Enter the one time pad: Quantum king
+Encrypted message is:  wioqfidxqam
+>>> 
+'''