From 8eb41720f151d20f13d7316d30cd8a02c8664e42 Mon Sep 17 00:00:00 2001
From: Holden Rohrer <holden.rohrer@gmail.com>
Date: Tue, 12 Nov 2019 10:28:35 -0500
Subject: allowed user input and base64 intermediary for rsa encrypt/decrypt

---
 final/rsa-decrypt.py | 15 ++++-----------
 final/rsa-encrypt.py | 19 +++++--------------
 2 files changed, 9 insertions(+), 25 deletions(-)

diff --git a/final/rsa-decrypt.py b/final/rsa-decrypt.py
index 39a2720..3bc0a06 100644
--- a/final/rsa-decrypt.py
+++ b/final/rsa-decrypt.py
@@ -1,7 +1,8 @@
-encrypted = [340, 316, 145, 278, 250, 435, 321, 109, 115, 490, 156, 212, 122, 288, 287, 164, 225] # Directly from demo output of encrypted
+import rsautils as ru
 p = int(input('prime 1: '))
 q = int(input('prime 2: '))
 n = p*q
+encrypted = ru.int2list(ru.base642int(input('encrypted message:\n')),n)
 tot = (p-1)*(q-1)
 e = int(input('e: '))
 
@@ -15,15 +16,7 @@ def decrypt_block(blk):
   return blk**d % n
 
 decrypted = [decrypt_block(block) for block in encrypted]
-
-messagenum = 0
-for blockind in range(len(decrypted)):
-  block = decrypted[blockind]
-  messagenum += block * n ** blockind
-
-message = ''
-while messagenum > 0:
-  message = chr(messagenum%128) + message
-  messagenum = (messagenum-messagenum%128)//128
+messagenum = ru.list2int(decrypted,n,endian="big")
+message = ru.int2string(messagenum)
 
 print(message)
diff --git a/final/rsa-encrypt.py b/final/rsa-encrypt.py
index a15fe9d..aa52509 100644
--- a/final/rsa-encrypt.py
+++ b/final/rsa-encrypt.py
@@ -1,24 +1,15 @@
-'''p = 29
-q = 17
-n = p*q
-tot = (p-1)*(q-1)
-e = 3 # Many present strictly for convenience's sake'''
+import rsautils as ru
+
 n = int(input('n: '))
 e = int(input('e (make sure it\'s relatively prime to p-1 and q-1): '))
 
 message = input('message:\n')
 messagenum = 0
-for char in message:
-  messagenum += ord(char)
-  messagenum *= 128 # Assuming ASCII only characters
-
-messageblocks = []
-while messagenum > 0:
-  messageblocks.append(messagenum%n)
-  messagenum = (messagenum-messagenum%n)//n
+messagenum = ru.string2int(message)
 
+messageblocks = ru.int2list(messagenum,n,endian="big")
 def encrypt_block(blk):
   return (blk ** e) % n
 
 encrypted = [encrypt_block(block) for block in messageblocks]
-print(encrypted)
+print(ru.int2base64(ru.list2int(encrypted,n)))
-- 
cgit