From 5bc880b9887c9689fef171683eae279adbbfc186 Mon Sep 17 00:00:00 2001 From: Yen Chi Hsuan Date: Wed, 17 Feb 2016 06:01:44 +0800 Subject: [utils] Add OHDave's RSA encryption function --- youtube_dl/utils.py | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) (limited to 'youtube_dl/utils.py') diff --git a/youtube_dl/utils.py b/youtube_dl/utils.py index 672ce05ea..7ce661b09 100644 --- a/youtube_dl/utils.py +++ b/youtube_dl/utils.py @@ -4,6 +4,7 @@ from __future__ import unicode_literals import base64 +import binascii import calendar import codecs import contextlib @@ -2582,3 +2583,20 @@ class PerRequestProxyHandler(compat_urllib_request.ProxyHandler): return None # No Proxy return compat_urllib_request.ProxyHandler.proxy_open( self, req, proxy, type) + + +def ohdave_rsa_encrypt(data, exponent, modulus): + ''' + Implement OHDave's RSA algorithm. See http://www.ohdave.com/rsa/ + + Input: + data: data to encrypt, bytes-like object + exponent, modulus: parameter e and N of RSA algorithm, both integer + Output: hex string of encrypted data + + Limitation: supports one block encryption only + ''' + + payload = int(binascii.hexlify(data[::-1]), 16) + encrypted = pow(payload, exponent, modulus) + return '%x' % encrypted -- cgit v1.2.3