diff options
| -rw-r--r-- | test/test_utils.py | 8 | ||||
| -rw-r--r-- | youtube_dl/utils.py | 18 |
2 files changed, 26 insertions, 0 deletions
diff --git a/test/test_utils.py b/test/test_utils.py index a1e416dd5..e6887be9f 100644 --- a/test/test_utils.py +++ b/test/test_utils.py @@ -35,6 +35,7 @@ from youtube_dl.utils import ( is_html, js_to_json, limit_length, + ohdave_rsa_encrypt, OnDemandPagedList, orderedSet, parse_duration, @@ -792,6 +793,13 @@ The first line {'nocheckcertificate': False}, '--check-certificate', 'nocheckcertificate', 'false', 'true', '='), ['--check-certificate=true']) + def test_ohdave_rsa_encrypt(self): + N = 0xab86b6371b5318aaa1d3c9e612a9f1264f372323c8c0f19875b5fc3b3fd3afcc1e5bec527aa94bfa85bffc157e4245aebda05389a5357b75115ac94f074aefcd + e = 65537 + + self.assertEqual( + ohdave_rsa_encrypt(b'aa111222', e, N), + '726664bd9a23fd0c70f9f1b84aab5e3905ce1e45a584e9cbcf9bcc7510338fc1986d6c599ff990d923aa43c51c0d9013cd572e13bc58f4ae48f2ed8c0b0ba881') if __name__ == '__main__': unittest.main() 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 |