diff options
| -rw-r--r-- | test/test_update.py | 30 | ||||
| -rw-r--r-- | test/versions.json | 34 | ||||
| -rw-r--r-- | youtube_dl/update.py | 32 |
3 files changed, 72 insertions, 24 deletions
diff --git a/test/test_update.py b/test/test_update.py new file mode 100644 index 000000000..d9c71511d --- /dev/null +++ b/test/test_update.py @@ -0,0 +1,30 @@ +#!/usr/bin/env python + +from __future__ import unicode_literals + +# Allow direct execution +import os +import sys +import unittest +sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__)))) + + +import json +from youtube_dl.update import rsa_verify + + +class TestUpdate(unittest.TestCase): + def test_rsa_verify(self): + UPDATES_RSA_KEY = (0x9d60ee4d8f805312fdb15a62f87b95bd66177b91df176765d13514a0f1754bcd2057295c5b6f1d35daa6742c3ffc9a82d3e118861c207995a8031e151d863c9927e304576bc80692bc8e094896fcf11b66f3e29e04e3a71e9a11558558acea1840aec37fc396fb6b65dc81a1c4144e03bd1c011de62e3f1357b327d08426fe93, 65537) + with open(os.path.join(os.path.dirname(os.path.abspath(__file__)), 'versions.json'), 'rb') as f: + versions_info = f.read().decode() + versions_info = json.loads(versions_info) + signature = versions_info['signature'] + del versions_info['signature'] + self.assertTrue(rsa_verify( + json.dumps(versions_info, sort_keys=True).encode('utf-8'), + signature, UPDATES_RSA_KEY)) + + +if __name__ == '__main__': + unittest.main() diff --git a/test/versions.json b/test/versions.json new file mode 100644 index 000000000..6cccc2259 --- /dev/null +++ b/test/versions.json @@ -0,0 +1,34 @@ +{ + "latest": "2013.01.06", + "signature": "72158cdba391628569ffdbea259afbcf279bbe3d8aeb7492690735dc1cfa6afa754f55c61196f3871d429599ab22f2667f1fec98865527b32632e7f4b3675a7ef0f0fbe084d359256ae4bba68f0d33854e531a70754712f244be71d4b92e664302aa99653ee4df19800d955b6c4149cd2b3f24288d6e4b40b16126e01f4c8ce6", + "versions": { + "2013.01.02": { + "bin": [ + "http://youtube-dl.org/downloads/2013.01.02/youtube-dl", + "f5b502f8aaa77675c4884938b1e4871ebca2611813a0c0e74f60c0fbd6dcca6b" + ], + "exe": [ + "http://youtube-dl.org/downloads/2013.01.02/youtube-dl.exe", + "75fa89d2ce297d102ff27675aa9d92545bbc91013f52ec52868c069f4f9f0422" + ], + "tar": [ + "http://youtube-dl.org/downloads/2013.01.02/youtube-dl-2013.01.02.tar.gz", + "6a66d022ac8e1c13da284036288a133ec8dba003b7bd3a5179d0c0daca8c8196" + ] + }, + "2013.01.06": { + "bin": [ + "http://youtube-dl.org/downloads/2013.01.06/youtube-dl", + "64b6ed8865735c6302e836d4d832577321b4519aa02640dc508580c1ee824049" + ], + "exe": [ + "http://youtube-dl.org/downloads/2013.01.06/youtube-dl.exe", + "58609baf91e4389d36e3ba586e21dab882daaaee537e4448b1265392ae86ff84" + ], + "tar": [ + "http://youtube-dl.org/downloads/2013.01.06/youtube-dl-2013.01.06.tar.gz", + "fe77ab20a95d980ed17a659aa67e371fdd4d656d19c4c7950e7b720b0c2f1a86" + ] + } + } +}
\ No newline at end of file diff --git a/youtube_dl/update.py b/youtube_dl/update.py index 995b8ed96..e4a1aaa64 100644 --- a/youtube_dl/update.py +++ b/youtube_dl/update.py @@ -15,33 +15,17 @@ from .version import __version__ def rsa_verify(message, signature, key): - from struct import pack from hashlib import sha256 - assert isinstance(message, bytes) - block_size = 0 - n = key[0] - while n: - block_size += 1 - n >>= 8 - signature = pow(int(signature, 16), key[1], key[0]) - raw_bytes = [] - while signature: - raw_bytes.insert(0, pack("B", signature & 0xFF)) - signature >>= 8 - signature = (block_size - len(raw_bytes)) * b'\x00' + b''.join(raw_bytes) - if signature[0:2] != b'\x00\x01': - return False - signature = signature[2:] - if b'\x00' not in signature: - return False - signature = signature[signature.index(b'\x00') + 1:] - if not signature.startswith(b'\x30\x31\x30\x0D\x06\x09\x60\x86\x48\x01\x65\x03\x04\x02\x01\x05\x00\x04\x20'): - return False - signature = signature[19:] - if signature != sha256(message).digest(): + byte_size = (len(bin(key[0])) - 2 + 8 - 1) // 8 + signature = ('%x' % pow(int(signature, 16), key[1], key[0])).encode() + signature = (byte_size * 2 - len(signature)) * b'0' + signature + asn1 = b'3031300d060960864801650304020105000420' + asn1 += sha256(message).hexdigest().encode() + if byte_size < len(asn1) // 2 + 11: return False - return True + expected = b'0001' + (byte_size - len(asn1) // 2 - 3) * b'ff' + b'00' + asn1 + return expected == signature def update_self(to_screen, verbose, opener): |