From 8eb41720f151d20f13d7316d30cd8a02c8664e42 Mon Sep 17 00:00:00 2001 From: Holden Rohrer 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 ++++----------- 1 file changed, 4 insertions(+), 11 deletions(-) (limited to 'final/rsa-decrypt.py') 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) -- cgit